TY  - JOUR
AU  - Nikolić, Jelena
AU  - Tošić, Nikola
AU  - Murcia-Delso, Juan
AU  - Kostić, Svetlana
PY  - 2024
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3445
AB  - This paper summarises current research findings related to the behaviour and simulation of a relatively new type
of structural component: recycled aggregate concrete-filled steel tube columns (RACFST). The first part of the
paper presents a review of the latest experimental campaigns on RACFST columns subjected to a variety of
loading conditions. For each of loading condition, highlight observations about the behaviour of RACFST columns are presented. The second part of the paper provides a summary of numerical modelling approaches
developed for simulating the structural behaviour of RACFST columns. Special attention is paid to the selection
and calibration of material models for recycled aggregate concrete. Finally, directions for future investigations in
this area are outlined and discussed. The review will benefit researchers and professionals seeking to gain an indepth understanding of the behaviour of RACFST columns, and fills a gap in existing literature regarding a
number of practical issues related to the numerical modelling of these components.
PB  - Elsevier
T2  - Engineering Structures
T1  - Comprehensive review of the structural behaviour and numerical modelling of recycled aggregate concrete-filled steel tubes
VL  - 303
DO  - 10.1016/j.engstruct.2024.117514
ER  - 

@article{
author = "Nikolić, Jelena and Tošić, Nikola and Murcia-Delso, Juan and Kostić, Svetlana",
year = "2024",
abstract = "This paper summarises current research findings related to the behaviour and simulation of a relatively new type
of structural component: recycled aggregate concrete-filled steel tube columns (RACFST). The first part of the
paper presents a review of the latest experimental campaigns on RACFST columns subjected to a variety of
loading conditions. For each of loading condition, highlight observations about the behaviour of RACFST columns are presented. The second part of the paper provides a summary of numerical modelling approaches
developed for simulating the structural behaviour of RACFST columns. Special attention is paid to the selection
and calibration of material models for recycled aggregate concrete. Finally, directions for future investigations in
this area are outlined and discussed. The review will benefit researchers and professionals seeking to gain an indepth understanding of the behaviour of RACFST columns, and fills a gap in existing literature regarding a
number of practical issues related to the numerical modelling of these components.",
publisher = "Elsevier",
journal = "Engineering Structures",
title = "Comprehensive review of the structural behaviour and numerical modelling of recycled aggregate concrete-filled steel tubes",
volume = "303",
doi = "10.1016/j.engstruct.2024.117514"
}

Nikolić, J., Tošić, N., Murcia-Delso, J.,& Kostić, S.. (2024). Comprehensive review of the structural behaviour and numerical modelling of recycled aggregate concrete-filled steel tubes. in Engineering Structures
Elsevier., 303.
https://doi.org/10.1016/j.engstruct.2024.117514

Nikolić J, Tošić N, Murcia-Delso J, Kostić S. Comprehensive review of the structural behaviour and numerical modelling of recycled aggregate concrete-filled steel tubes. in Engineering Structures. 2024;303.
doi:10.1016/j.engstruct.2024.117514 .

Nikolić, Jelena, Tošić, Nikola, Murcia-Delso, Juan, Kostić, Svetlana, "Comprehensive review of the structural behaviour and numerical modelling of recycled aggregate concrete-filled steel tubes" in Engineering Structures, 303 (2024),
https://doi.org/10.1016/j.engstruct.2024.117514 . .

TY  - JOUR
AU  - Bursać, Milan
AU  - Kostić, Svetlana
PY  - 2024
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3489
AB  - The paper presents a nonlinear concentrated plasticity frame element for advanced analysis of steel frames exposed to elevated temperatures. The element extends the formulation based on the generalized plasticity material model that was successfully applied to the analysis of steel and composite structures. It considers the material's nonlinear behavior, temperature-induced loading, strength and stiffness degradation typical for structures under fire conditions. The nonlinear geometry is taken into account with the corotational formulation. Because of the generalized plasticity relations adoption, the element can describe the gradual yielding of cross sections. At the same time, the implemented return mapping algorithm ensures the element's high computational efficiency. The governing element equations, selection of parameters and computer implementation are discussed in the paper, followed by element validation through the number of experimental data examples and other numerical models. The comparative analysis demonstrated the element's versatility and capability to accurately predict the structural response of steel frame structures exposed to fire.
PB  - Elsevier
T2  - Computers and Structures
T1  - An efficient model for 3D analysis of steel frames exposed to fire
VL  - 297
DO  - 10.1016/j.compstruc.2024.107363
ER  - 

@article{
author = "Bursać, Milan and Kostić, Svetlana",
year = "2024",
abstract = "The paper presents a nonlinear concentrated plasticity frame element for advanced analysis of steel frames exposed to elevated temperatures. The element extends the formulation based on the generalized plasticity material model that was successfully applied to the analysis of steel and composite structures. It considers the material's nonlinear behavior, temperature-induced loading, strength and stiffness degradation typical for structures under fire conditions. The nonlinear geometry is taken into account with the corotational formulation. Because of the generalized plasticity relations adoption, the element can describe the gradual yielding of cross sections. At the same time, the implemented return mapping algorithm ensures the element's high computational efficiency. The governing element equations, selection of parameters and computer implementation are discussed in the paper, followed by element validation through the number of experimental data examples and other numerical models. The comparative analysis demonstrated the element's versatility and capability to accurately predict the structural response of steel frame structures exposed to fire.",
publisher = "Elsevier",
journal = "Computers and Structures",
title = "An efficient model for 3D analysis of steel frames exposed to fire",
volume = "297",
doi = "10.1016/j.compstruc.2024.107363"
}

Bursać, M.,& Kostić, S.. (2024). An efficient model for 3D analysis of steel frames exposed to fire. in Computers and Structures
Elsevier., 297.
https://doi.org/10.1016/j.compstruc.2024.107363

Bursać M, Kostić S. An efficient model for 3D analysis of steel frames exposed to fire. in Computers and Structures. 2024;297.
doi:10.1016/j.compstruc.2024.107363 .

Bursać, Milan, Kostić, Svetlana, "An efficient model for 3D analysis of steel frames exposed to fire" in Computers and Structures, 297 (2024),
https://doi.org/10.1016/j.compstruc.2024.107363 . .

TY  - CONF
AU  - Jakovljević, Isidora
AU  - Gluhović, Nina
AU  - Spremić, Milan
AU  - Rajnović, Dušan
PY  - 2024
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3469
AB  - Ground floors of industrial buildings, fully supported on the ground or piles, are usually made
of several concrete segments connected through free-movement construction joints. These joints
should provide shear load transfer of the slab and minimise its vertical displacements while
allowing slab horizontal movement to prevent damage due to concrete dry shrinkage. The
construction joint “Dilat 08”, consisting of round steel dowels and steel formwork, was
experimentally tested in a laboratory environment to determine its behaviour to shear load. The
experimental double-shear setup consisted of three slabs connecting through the “Dilat 08” join
system, with two side slabs fully supported on the base and the middle slab on which the vertical
loading was applied. Specimens were formed with a gap of 10 mm between adjacent slabs to
simulate the construction joint opening. Two construction joint orientations were investigated
introducing the vertical load to the slab with a steel plate on the edge and to the slab with an
angle profile on the edge. Experimental testing of both specimens resulted in construction joint
failure due to concrete cracking around steel dowels, near the edges of the middle slab. The
investigation confirmed that the joint orientation affects the joint shear response, demonstrating
larger joint resistance when the steel plate is installed in the slab subjected to failure. Although
contributing to the joint bending stiffness before formwork installation on the site, the horizontal
leg of the angle profile decreases the joint resistance. Experimentally obtained joint resistance
was compared to the design values of resistance according to Technical Report 34 and EN 1992-
4, highlighting a considerable difference between the two analytical approaches. The comparison
between the “Dilat 08” and three types of free-movement joints available on the construction
market showed that “Dilat 08” features larger resistance according to Technical Report 34, but
it also weighs more.
PB  - University of Montenegro, Faculty of Civil Engineering
C3  - Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024
T1  - Experimental investigation of the construction joint in concrete ground floors
EP  - 224
SP  - 217
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3469
ER  - 

@conference{
author = "Jakovljević, Isidora and Gluhović, Nina and Spremić, Milan and Rajnović, Dušan",
year = "2024",
abstract = "Ground floors of industrial buildings, fully supported on the ground or piles, are usually made
of several concrete segments connected through free-movement construction joints. These joints
should provide shear load transfer of the slab and minimise its vertical displacements while
allowing slab horizontal movement to prevent damage due to concrete dry shrinkage. The
construction joint “Dilat 08”, consisting of round steel dowels and steel formwork, was
experimentally tested in a laboratory environment to determine its behaviour to shear load. The
experimental double-shear setup consisted of three slabs connecting through the “Dilat 08” join
system, with two side slabs fully supported on the base and the middle slab on which the vertical
loading was applied. Specimens were formed with a gap of 10 mm between adjacent slabs to
simulate the construction joint opening. Two construction joint orientations were investigated
introducing the vertical load to the slab with a steel plate on the edge and to the slab with an
angle profile on the edge. Experimental testing of both specimens resulted in construction joint
failure due to concrete cracking around steel dowels, near the edges of the middle slab. The
investigation confirmed that the joint orientation affects the joint shear response, demonstrating
larger joint resistance when the steel plate is installed in the slab subjected to failure. Although
contributing to the joint bending stiffness before formwork installation on the site, the horizontal
leg of the angle profile decreases the joint resistance. Experimentally obtained joint resistance
was compared to the design values of resistance according to Technical Report 34 and EN 1992-
4, highlighting a considerable difference between the two analytical approaches. The comparison
between the “Dilat 08” and three types of free-movement joints available on the construction
market showed that “Dilat 08” features larger resistance according to Technical Report 34, but
it also weighs more.",
publisher = "University of Montenegro, Faculty of Civil Engineering",
journal = "Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024",
title = "Experimental investigation of the construction joint in concrete ground floors",
pages = "224-217",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3469"
}

Jakovljević, I., Gluhović, N., Spremić, M.,& Rajnović, D.. (2024). Experimental investigation of the construction joint in concrete ground floors. in Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024
University of Montenegro, Faculty of Civil Engineering., 217-224.
https://hdl.handle.net/21.15107/rcub_grafar_3469

Jakovljević I, Gluhović N, Spremić M, Rajnović D. Experimental investigation of the construction joint in concrete ground floors. in Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024. 2024;:217-224.
https://hdl.handle.net/21.15107/rcub_grafar_3469 .

Jakovljević, Isidora, Gluhović, Nina, Spremić, Milan, Rajnović, Dušan, "Experimental investigation of the construction joint in concrete ground floors" in Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024 (2024):217-224,
https://hdl.handle.net/21.15107/rcub_grafar_3469 .

TY  - CONF
AU  - Spremić, Milan
AU  - Dobrić, Jelena
AU  - Jakovljević, Isidora
AU  - Dinčić, Nemanja
PY  - 2024
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3468
AB  - When analysing the fire resistance of the steel structure of the stadium roof in the event of a fire,
the specific features of the stadium building must be taken into consideration. The stadium stands
are open units of the building that are directly connected to the surrounding area. The clear height
between the stadium roof and the stands is commonly large. However, the clear height between
relatively small parts of the roof, directly above the top of the stands, could be smaller, potentially
making this part of the roof the most vulnerable. On the stands of the stadium, it is prohibited to
bring items that contain combustible material. In addition, the structure of the stadium, benches
or chairs must be made of non-combustible material. Therefore, a fire that could compromise the
steel structure of the stadium roof can only come from the stadium premises on the stands or
under the stands. The fire scenarios on the stadium roof are not described in detail in the literature
compared to indoor (covered) sports arenas. To assess the fire resistance of the roof structure, it
is necessary to check all possible and potentially dangerous scenarios. The subject of the analysis
presented in this paper is the roof steel structure of the stadium in Loznica, Serbia, which was
built in the period 2021–2023. The study considers the following fire scenarios and their effects
on the roof steel structure: (i) a local fire on the stands, and (ii) a fire in the stadium premises
affecting the external members. The fire in stadium premises was analysed using the analytical
expressions provided in Annex B of EN 1991-1-2 and EN 1993-1-2, as well as through CFD
(Computational Fluid Dynamics) analysis of fire propagation. The calculation was performed
for the domains of temperature, time and resistance, depending on the applied fire load analysis.
Results showed that the steel structure of the stadium roof in Loznica meets the load-bearing
codified criteria for the fire effects, with the exception of only one main roof truss. To address
this issue, it was decided to install fire-resistant glass in the TV studio on the building's third
floor to separate this area from the stands and prevent fire effects on the critical main roof truss.
PB  - University of Montenegro Faculty of Civil Engineering
C3  - Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024
T1  - Structural fire resistance design of the football stadium roof steel structure
EP  - 542
SP  - 535
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3468
ER  - 

@conference{
author = "Spremić, Milan and Dobrić, Jelena and Jakovljević, Isidora and Dinčić, Nemanja",
year = "2024",
abstract = "When analysing the fire resistance of the steel structure of the stadium roof in the event of a fire,
the specific features of the stadium building must be taken into consideration. The stadium stands
are open units of the building that are directly connected to the surrounding area. The clear height
between the stadium roof and the stands is commonly large. However, the clear height between
relatively small parts of the roof, directly above the top of the stands, could be smaller, potentially
making this part of the roof the most vulnerable. On the stands of the stadium, it is prohibited to
bring items that contain combustible material. In addition, the structure of the stadium, benches
or chairs must be made of non-combustible material. Therefore, a fire that could compromise the
steel structure of the stadium roof can only come from the stadium premises on the stands or
under the stands. The fire scenarios on the stadium roof are not described in detail in the literature
compared to indoor (covered) sports arenas. To assess the fire resistance of the roof structure, it
is necessary to check all possible and potentially dangerous scenarios. The subject of the analysis
presented in this paper is the roof steel structure of the stadium in Loznica, Serbia, which was
built in the period 2021–2023. The study considers the following fire scenarios and their effects
on the roof steel structure: (i) a local fire on the stands, and (ii) a fire in the stadium premises
affecting the external members. The fire in stadium premises was analysed using the analytical
expressions provided in Annex B of EN 1991-1-2 and EN 1993-1-2, as well as through CFD
(Computational Fluid Dynamics) analysis of fire propagation. The calculation was performed
for the domains of temperature, time and resistance, depending on the applied fire load analysis.
Results showed that the steel structure of the stadium roof in Loznica meets the load-bearing
codified criteria for the fire effects, with the exception of only one main roof truss. To address
this issue, it was decided to install fire-resistant glass in the TV studio on the building's third
floor to separate this area from the stands and prevent fire effects on the critical main roof truss.",
publisher = "University of Montenegro Faculty of Civil Engineering",
journal = "Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024",
title = "Structural fire resistance design of the football stadium roof steel structure",
pages = "542-535",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3468"
}

Spremić, M., Dobrić, J., Jakovljević, I.,& Dinčić, N.. (2024). Structural fire resistance design of the football stadium roof steel structure. in Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024
University of Montenegro Faculty of Civil Engineering., 535-542.
https://hdl.handle.net/21.15107/rcub_grafar_3468

Spremić M, Dobrić J, Jakovljević I, Dinčić N. Structural fire resistance design of the football stadium roof steel structure. in Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024. 2024;:535-542.
https://hdl.handle.net/21.15107/rcub_grafar_3468 .

Spremić, Milan, Dobrić, Jelena, Jakovljević, Isidora, Dinčić, Nemanja, "Structural fire resistance design of the football stadium roof steel structure" in Proceedings of The 9th International Conference "Civil Engineering – Science and Practice", Kolašin, 5-9th March 2024 (2024):535-542,
https://hdl.handle.net/21.15107/rcub_grafar_3468 .

TY  - CONF
AU  - Mijatović, Ognjen
AU  - Mišković, Zoran
AU  - Salatić, Ratko
AU  - Golubović - Bugarski, Valentina
AU  - Guzijan - Dilber, Matija
PY  - 2024
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3470
AB  - Driven by the industry's needs to address energy dissipation issues in mechanical connections,
the set goals of the global scientific community, and previous research efforts to interpret how
the condition of contact surfaces between two bodies in contact can be significant, a unique
experimental setup has been devised to study the impact of the state of contact interaction
between two bodies on the system's response. The purpose of the designed experimental setup
is to correlate the roughness of contact surfaces with the deformation of a specially designed
experimental sample. The roughness of contact surfaces represents the most dominant
influencing factor in the contact interaction of two bodies. In terms of scale, the study,
measurement, and analysis of surface roughness fall under the micro and nano scales. On the
other hand, the change in deformation of the experimental sample as a result of the change in
roughness falls under the macro scale. Based on all the aforementioned, the fundamental idea of
the designed experimental setup can be seen. Considering that it is not possible to enter into
contact interaction and explicitly analyse the influence of roughness on the response of a
mechanical connection, the idea in overall research is to consider the macro behaviour of a
specially prepared experimental sample depending on the level of roughness of the contact
interaction surfaces at the micro level. The aim of this paper is to present details and challenges
in the construction of an instrument necessary for such precise examinations, named “Precision
Press with Arcs”.
PB  - University of Montenegro Faculty of Civil Engineering
C3  - The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024
T1  - Development of a tool for measuring the effect of surface roughness on steel structural response
EP  - 256
SP  - 249
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3470
ER  - 

@conference{
author = "Mijatović, Ognjen and Mišković, Zoran and Salatić, Ratko and Golubović - Bugarski, Valentina and Guzijan - Dilber, Matija",
year = "2024",
abstract = "Driven by the industry's needs to address energy dissipation issues in mechanical connections,
the set goals of the global scientific community, and previous research efforts to interpret how
the condition of contact surfaces between two bodies in contact can be significant, a unique
experimental setup has been devised to study the impact of the state of contact interaction
between two bodies on the system's response. The purpose of the designed experimental setup
is to correlate the roughness of contact surfaces with the deformation of a specially designed
experimental sample. The roughness of contact surfaces represents the most dominant
influencing factor in the contact interaction of two bodies. In terms of scale, the study,
measurement, and analysis of surface roughness fall under the micro and nano scales. On the
other hand, the change in deformation of the experimental sample as a result of the change in
roughness falls under the macro scale. Based on all the aforementioned, the fundamental idea of
the designed experimental setup can be seen. Considering that it is not possible to enter into
contact interaction and explicitly analyse the influence of roughness on the response of a
mechanical connection, the idea in overall research is to consider the macro behaviour of a
specially prepared experimental sample depending on the level of roughness of the contact
interaction surfaces at the micro level. The aim of this paper is to present details and challenges
in the construction of an instrument necessary for such precise examinations, named “Precision
Press with Arcs”.",
publisher = "University of Montenegro Faculty of Civil Engineering",
journal = "The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024",
title = "Development of a tool for measuring the effect of surface roughness on steel structural response",
pages = "256-249",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3470"
}

Mijatović, O., Mišković, Z., Salatić, R., Golubović - Bugarski, V.,& Guzijan - Dilber, M.. (2024). Development of a tool for measuring the effect of surface roughness on steel structural response. in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024
University of Montenegro Faculty of Civil Engineering., 249-256.
https://hdl.handle.net/21.15107/rcub_grafar_3470

Mijatović O, Mišković Z, Salatić R, Golubović - Bugarski V, Guzijan - Dilber M. Development of a tool for measuring the effect of surface roughness on steel structural response. in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024. 2024;:249-256.
https://hdl.handle.net/21.15107/rcub_grafar_3470 .

Mijatović, Ognjen, Mišković, Zoran, Salatić, Ratko, Golubović - Bugarski, Valentina, Guzijan - Dilber, Matija, "Development of a tool for measuring the effect of surface roughness on steel structural response" in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024 (2024):249-256,
https://hdl.handle.net/21.15107/rcub_grafar_3470 .

TY  - CONF
AU  - Savatović, Siniša
AU  - Mišković, Zoran
AU  - Salatić, Ratko
AU  - Latinović-Krndija, Marina
PY  - 2024
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3466
AB  - The paper presents an experimental and analytical way of determining the impulse response of
a linear time-invariant damped system with one degree of freedom.
An experiment was conducted where the mass was excited by an impact load. Both the mass
acceleration and impact force values were recorded. The magnitude of the system's frequency
response was determined based on the recorded values, ensuring the relatively simple
identification of the system's basic parameters. Those parameters were used to define a suitable
mathematical model of the system, transfer function, and frequency response function in an
analytical form.
The impulse response of the system based on the recorded values of mass acceleration and impact
load is expressed as a discrete function. This function is determined by applying the inverse
discrete Fourier transform of the corresponding frequency response function.
The impulse response of the system, based on the mathematical model, is expressed as a
continuous function. This function is determined by applying the inverse Fourier transform of
the corresponding frequency response.
Finally, it was shown that the response of a system to arbitrary load could be determined by
convolving the impulse response of the system with the load function. Convolution of continuous
functions is difficult to perform, and it can be used only for the simplest problem and for
understanding the physical phenomenon. Discrete convolution has a practical utility because it
is easy to perform in some program languages like Matlab. However, discrete impulse response
has limitations depending on the test conditions.
PB  - University of Montenegro Faculty of Civil Engineering
C3  - The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024
T1  - Analytic and experimental determination impulse response of single degree of freedom system
EP  - 288
SP  - 281
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3466
ER  - 

@conference{
author = "Savatović, Siniša and Mišković, Zoran and Salatić, Ratko and Latinović-Krndija, Marina",
year = "2024",
abstract = "The paper presents an experimental and analytical way of determining the impulse response of
a linear time-invariant damped system with one degree of freedom.
An experiment was conducted where the mass was excited by an impact load. Both the mass
acceleration and impact force values were recorded. The magnitude of the system's frequency
response was determined based on the recorded values, ensuring the relatively simple
identification of the system's basic parameters. Those parameters were used to define a suitable
mathematical model of the system, transfer function, and frequency response function in an
analytical form.
The impulse response of the system based on the recorded values of mass acceleration and impact
load is expressed as a discrete function. This function is determined by applying the inverse
discrete Fourier transform of the corresponding frequency response function.
The impulse response of the system, based on the mathematical model, is expressed as a
continuous function. This function is determined by applying the inverse Fourier transform of
the corresponding frequency response.
Finally, it was shown that the response of a system to arbitrary load could be determined by
convolving the impulse response of the system with the load function. Convolution of continuous
functions is difficult to perform, and it can be used only for the simplest problem and for
understanding the physical phenomenon. Discrete convolution has a practical utility because it
is easy to perform in some program languages like Matlab. However, discrete impulse response
has limitations depending on the test conditions.",
publisher = "University of Montenegro Faculty of Civil Engineering",
journal = "The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024",
title = "Analytic and experimental determination impulse response of single degree of freedom system",
pages = "288-281",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3466"
}

Savatović, S., Mišković, Z., Salatić, R.,& Latinović-Krndija, M.. (2024). Analytic and experimental determination impulse response of single degree of freedom system. in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024
University of Montenegro Faculty of Civil Engineering., 281-288.
https://hdl.handle.net/21.15107/rcub_grafar_3466

Savatović S, Mišković Z, Salatić R, Latinović-Krndija M. Analytic and experimental determination impulse response of single degree of freedom system. in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024. 2024;:281-288.
https://hdl.handle.net/21.15107/rcub_grafar_3466 .

Savatović, Siniša, Mišković, Zoran, Salatić, Ratko, Latinović-Krndija, Marina, "Analytic and experimental determination impulse response of single degree of freedom system" in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024 (2024):281-288,
https://hdl.handle.net/21.15107/rcub_grafar_3466 .

TY  - CONF
AU  - Mišković, Zoran
AU  - Savatović, Siniša
AU  - Mišković, Ljiljana
PY  - 2024
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3467
AB  - The paper presents part of the conducted research on laser-displacement sensors for the
measurement of structural response in civil engineering applications. Usually, the level of
displacement in laboratory or on-site testing is in small to mid-range levels of 1.00 to 25.00 mm
and in the frequency range of up to 100 Hz. Appropriate sensors were selected and used
according to performance in the sense of resolution/accuracy.
Experiments are conducted on steel model beam in the laboratory and on-site real bridge
structure. In both analysed cases, data analysis was carried out in the sense of modal frequencies
and damping estimation with comparison with numerically computed values.
Presented are the results of two experiments, a laboratory-tested model of steel beam and an onsite
tested real bridge structure. In both cases have achieved good argument of test results,
estimated modal frequencies and damping of tested model/structure.
Data analyses conducted used a developed MATLAB script, while the numerical computation
conducted used SAP2000_v14 FEM package for structural analysis.
Excellent agreement of extracted results was achieved in the case of the laboratory-tested
structural model, as well as of extracted results of on-site tested real-world structure in the sense
of extracted modal frequencies and modal damping.
Finally, the conclusion is that laser-displacement sensors are quite appropriate for small to midrange
of expected displacement and are quite appropriate for such applications according to the
possibility of installation so that such sensors could be applied for structural testing, particularly
for dynamic testing of such structures because of their possibility of high sampling frequency
and high resolution/accuracy.
PB  - University of Montenegro Faculty of Civil Engineering
C3  - The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024
T1  - Direct laser dynamic displacement measurement of structural response during testing
EP  - 264
SP  - 257
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3467
ER  - 

@conference{
author = "Mišković, Zoran and Savatović, Siniša and Mišković, Ljiljana",
year = "2024",
abstract = "The paper presents part of the conducted research on laser-displacement sensors for the
measurement of structural response in civil engineering applications. Usually, the level of
displacement in laboratory or on-site testing is in small to mid-range levels of 1.00 to 25.00 mm
and in the frequency range of up to 100 Hz. Appropriate sensors were selected and used
according to performance in the sense of resolution/accuracy.
Experiments are conducted on steel model beam in the laboratory and on-site real bridge
structure. In both analysed cases, data analysis was carried out in the sense of modal frequencies
and damping estimation with comparison with numerically computed values.
Presented are the results of two experiments, a laboratory-tested model of steel beam and an onsite
tested real bridge structure. In both cases have achieved good argument of test results,
estimated modal frequencies and damping of tested model/structure.
Data analyses conducted used a developed MATLAB script, while the numerical computation
conducted used SAP2000_v14 FEM package for structural analysis.
Excellent agreement of extracted results was achieved in the case of the laboratory-tested
structural model, as well as of extracted results of on-site tested real-world structure in the sense
of extracted modal frequencies and modal damping.
Finally, the conclusion is that laser-displacement sensors are quite appropriate for small to midrange
of expected displacement and are quite appropriate for such applications according to the
possibility of installation so that such sensors could be applied for structural testing, particularly
for dynamic testing of such structures because of their possibility of high sampling frequency
and high resolution/accuracy.",
publisher = "University of Montenegro Faculty of Civil Engineering",
journal = "The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024",
title = "Direct laser dynamic displacement measurement of structural response during testing",
pages = "264-257",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3467"
}

Mišković, Z., Savatović, S.,& Mišković, L.. (2024). Direct laser dynamic displacement measurement of structural response during testing. in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024
University of Montenegro Faculty of Civil Engineering., 257-264.
https://hdl.handle.net/21.15107/rcub_grafar_3467

Mišković Z, Savatović S, Mišković L. Direct laser dynamic displacement measurement of structural response during testing. in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024. 2024;:257-264.
https://hdl.handle.net/21.15107/rcub_grafar_3467 .

Mišković, Zoran, Savatović, Siniša, Mišković, Ljiljana, "Direct laser dynamic displacement measurement of structural response during testing" in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, 5-9 March, 2024 (2024):257-264,
https://hdl.handle.net/21.15107/rcub_grafar_3467 .

TY  - JOUR
AU  - Radović, Andrija
AU  - Carević, Vedran
AU  - Marinković, Snežana
AU  - Plavšić, Jasna
AU  - Tešić, Ksenija
PY  - 2024
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3461
AB  - The efficient way to mitigate the impact of the concrete industry on climate change is to reduce the clinker content in the concrete mix. Beside incorporating supplementary cementitious materials (SCMs), it is possible to use high filler content combined with concrete mix optimisation. Limestone powder emerges as a promising filler mineral due to its availability and ready-to-use technology. In this work, the carbonation resistance of concrete with a high limestone powder content (45–65% of the powder phase) was experimentally tested. Test results showed that, with an optimized mix design featuring low water content and increased paste and plasticizer volume, concrete mixes satisfied high workability and strength demands for commonly applied strength classes. However, carbonation resistance remains a challenge. After two years in indoor natural conditions, carbonation depths were 8%, 28%, and 67% greater than referent Portland cement concrete for mixes with 47%, 58%, and 65% limestone powder content, respectively. Further analyses showed the inapplicability of the existing fib Model Code 2010 service life prediction model to limestone powder concrete. Based on a comprehensive database of experimental results, the modification of the fib prediction was proposed. A full probabilistic service life analysis revealed that for concrete with more than 20% limestone powder content and for both 50 and 100-years’ design service life, the currently prescribed concrete cover depths in European standards should be increased, depending on the carbonation exposure class.
PB  - Elsevier Ltd
T2  - Journal of Building Engineering
T1  - Prediction model for calculation of the limestone powder concrete carbonation depth
SP  - 108776
DO  - 10.1016/j.jobe.2024.108776
ER  - 

@article{
author = "Radović, Andrija and Carević, Vedran and Marinković, Snežana and Plavšić, Jasna and Tešić, Ksenija",
year = "2024",
abstract = "The efficient way to mitigate the impact of the concrete industry on climate change is to reduce the clinker content in the concrete mix. Beside incorporating supplementary cementitious materials (SCMs), it is possible to use high filler content combined with concrete mix optimisation. Limestone powder emerges as a promising filler mineral due to its availability and ready-to-use technology. In this work, the carbonation resistance of concrete with a high limestone powder content (45–65% of the powder phase) was experimentally tested. Test results showed that, with an optimized mix design featuring low water content and increased paste and plasticizer volume, concrete mixes satisfied high workability and strength demands for commonly applied strength classes. However, carbonation resistance remains a challenge. After two years in indoor natural conditions, carbonation depths were 8%, 28%, and 67% greater than referent Portland cement concrete for mixes with 47%, 58%, and 65% limestone powder content, respectively. Further analyses showed the inapplicability of the existing fib Model Code 2010 service life prediction model to limestone powder concrete. Based on a comprehensive database of experimental results, the modification of the fib prediction was proposed. A full probabilistic service life analysis revealed that for concrete with more than 20% limestone powder content and for both 50 and 100-years’ design service life, the currently prescribed concrete cover depths in European standards should be increased, depending on the carbonation exposure class.",
publisher = "Elsevier Ltd",
journal = "Journal of Building Engineering",
title = "Prediction model for calculation of the limestone powder concrete carbonation depth",
pages = "108776",
doi = "10.1016/j.jobe.2024.108776"
}

Radović, A., Carević, V., Marinković, S., Plavšić, J.,& Tešić, K.. (2024). Prediction model for calculation of the limestone powder concrete carbonation depth. in Journal of Building Engineering
Elsevier Ltd., 108776.
https://doi.org/10.1016/j.jobe.2024.108776

Radović A, Carević V, Marinković S, Plavšić J, Tešić K. Prediction model for calculation of the limestone powder concrete carbonation depth. in Journal of Building Engineering. 2024;:108776.
doi:10.1016/j.jobe.2024.108776 .

Radović, Andrija, Carević, Vedran, Marinković, Snežana, Plavšić, Jasna, Tešić, Ksenija, "Prediction model for calculation of the limestone powder concrete carbonation depth" in Journal of Building Engineering (2024):108776,
https://doi.org/10.1016/j.jobe.2024.108776 . .

TY  - JOUR
AU  - Jakovljević, Isidora
AU  - Spremić, Milan
AU  - Marković, Zlatko
PY  - 2024
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3459
AB  - Headed stud shear connectors are commonly implemented in steel-concrete composite floors for connecting the concrete slab to the steel beam and providing composite action between those two elements. The orientation of profiled sheeting is usually transverse or parallel to the supporting beam, and for those cases, design codes provide specific detailing requests and relations for obtaining headed stud resistance. Nevertheless, design codes do not recognise specific configurations when the angle between profiled sheeting ribs and the beam is in the range between 0° and 90°, which is characteristic of irregular-shaped floor structures. Due to the lack of design recommendations for headed stud resistance in these cases, investigations of the effect of the rib-to-beam angle on headed stud shear performance were conducted and presented in this paper. Experimental work included push-out tests conducted on specimens with rib-to-beam angles of 45° and 60°, as well as control specimens with ribs transverse to the beam. The influence of varied rib-to-beam angles on shear connector properties such as shear resistance, stiffness, ductility, and failure mode was discussed. According to experimental research, finite element models of push-out tests were created and verified. The parametric numerical analysis covered key parameters such as concrete class, headed stud height and diameter, and rib-to-beam angle. According to the results, an analytical relation for obtaining headed stud resistance in profiled steel sheeting with a rib-to-beam angle between 30° and 90° was proposed.
PB  - Elsevier
T2  - Engineering Structures
T1  - Effect of rib-to-beam angle on the shear resistance of headed studs in composite slab
SP  - 117574
VL  - 303
DO  - 10.1016/j.engstruct.2024.117574
ER  - 

@article{
author = "Jakovljević, Isidora and Spremić, Milan and Marković, Zlatko",
year = "2024",
abstract = "Headed stud shear connectors are commonly implemented in steel-concrete composite floors for connecting the concrete slab to the steel beam and providing composite action between those two elements. The orientation of profiled sheeting is usually transverse or parallel to the supporting beam, and for those cases, design codes provide specific detailing requests and relations for obtaining headed stud resistance. Nevertheless, design codes do not recognise specific configurations when the angle between profiled sheeting ribs and the beam is in the range between 0° and 90°, which is characteristic of irregular-shaped floor structures. Due to the lack of design recommendations for headed stud resistance in these cases, investigations of the effect of the rib-to-beam angle on headed stud shear performance were conducted and presented in this paper. Experimental work included push-out tests conducted on specimens with rib-to-beam angles of 45° and 60°, as well as control specimens with ribs transverse to the beam. The influence of varied rib-to-beam angles on shear connector properties such as shear resistance, stiffness, ductility, and failure mode was discussed. According to experimental research, finite element models of push-out tests were created and verified. The parametric numerical analysis covered key parameters such as concrete class, headed stud height and diameter, and rib-to-beam angle. According to the results, an analytical relation for obtaining headed stud resistance in profiled steel sheeting with a rib-to-beam angle between 30° and 90° was proposed.",
publisher = "Elsevier",
journal = "Engineering Structures",
title = "Effect of rib-to-beam angle on the shear resistance of headed studs in composite slab",
pages = "117574",
volume = "303",
doi = "10.1016/j.engstruct.2024.117574"
}

Jakovljević, I., Spremić, M.,& Marković, Z.. (2024). Effect of rib-to-beam angle on the shear resistance of headed studs in composite slab. in Engineering Structures
Elsevier., 303, 117574.
https://doi.org/10.1016/j.engstruct.2024.117574

Jakovljević I, Spremić M, Marković Z. Effect of rib-to-beam angle on the shear resistance of headed studs in composite slab. in Engineering Structures. 2024;303:117574.
doi:10.1016/j.engstruct.2024.117574 .

Jakovljević, Isidora, Spremić, Milan, Marković, Zlatko, "Effect of rib-to-beam angle on the shear resistance of headed studs in composite slab" in Engineering Structures, 303 (2024):117574,
https://doi.org/10.1016/j.engstruct.2024.117574 . .

TY  - CONF
AU  - Broćeta, Gordana
AU  - Savić, Aleksandar R.
AU  - Vlahović, Milica
AU  - Martinović, Sanja
AU  - Volkov Husovic, Tatjana
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3294
AB  - In certain cases, solar panels are placed on suitable structures that are supported on the ground,
and this includes the appropriate dimensioning of anchor supports, i.e. suppor elements, within the
framework of the concrete construction project. Bearing in mind the great variations in soil qualiy
and different ambient conditions that depend on the location, different ways of dimensioning have
been developed, from experiential, through those defined based on soil conditions and theoretical
models, and to numerical ones characterized by the appropriate degree of accuracy. The paper
presents the principle of in situ testing of the load capacity of trial anchors using specially
developed apparatus, in order to check the designed conditions and possible correction of this part
of the construction project.
PB  - Union of Mechanical and   Electrotechnical Engineers and   Technicians of Serbia (SMEITS)  Society for Renewable Electrical   Power Sources  Kneza Miloša str. 7a/II,   11000 Beograd
C3  - Proceedings / 11th International Conference on Renewable Electrical Power Sources, Belgrade, 2-3 November, 2023
T1  - Development of the Apparatus for In Situ Testing of Solar Panel Racking Anchors
EP  - 501
SP  - 495
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3294
ER  - 

@conference{
author = "Broćeta, Gordana and Savić, Aleksandar R. and Vlahović, Milica and Martinović, Sanja and Volkov Husovic, Tatjana",
year = "2023",
abstract = "In certain cases, solar panels are placed on suitable structures that are supported on the ground,
and this includes the appropriate dimensioning of anchor supports, i.e. suppor elements, within the
framework of the concrete construction project. Bearing in mind the great variations in soil qualiy
and different ambient conditions that depend on the location, different ways of dimensioning have
been developed, from experiential, through those defined based on soil conditions and theoretical
models, and to numerical ones characterized by the appropriate degree of accuracy. The paper
presents the principle of in situ testing of the load capacity of trial anchors using specially
developed apparatus, in order to check the designed conditions and possible correction of this part
of the construction project.",
publisher = "Union of Mechanical and   Electrotechnical Engineers and   Technicians of Serbia (SMEITS)  Society for Renewable Electrical   Power Sources  Kneza Miloša str. 7a/II,   11000 Beograd",
journal = "Proceedings / 11th International Conference on Renewable Electrical Power Sources, Belgrade, 2-3 November, 2023",
title = "Development of the Apparatus for In Situ Testing of Solar Panel Racking Anchors",
pages = "501-495",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3294"
}

Broćeta, G., Savić, A. R., Vlahović, M., Martinović, S.,& Volkov Husovic, T.. (2023). Development of the Apparatus for In Situ Testing of Solar Panel Racking Anchors. in Proceedings / 11th International Conference on Renewable Electrical Power Sources, Belgrade, 2-3 November, 2023
Union of Mechanical and   Electrotechnical Engineers and   Technicians of Serbia (SMEITS)  Society for Renewable Electrical   Power Sources  Kneza Miloša str. 7a/II,   11000 Beograd., 495-501.
https://hdl.handle.net/21.15107/rcub_grafar_3294

Broćeta G, Savić AR, Vlahović M, Martinović S, Volkov Husovic T. Development of the Apparatus for In Situ Testing of Solar Panel Racking Anchors. in Proceedings / 11th International Conference on Renewable Electrical Power Sources, Belgrade, 2-3 November, 2023. 2023;:495-501.
https://hdl.handle.net/21.15107/rcub_grafar_3294 .

Broćeta, Gordana, Savić, Aleksandar R., Vlahović, Milica, Martinović, Sanja, Volkov Husovic, Tatjana, "Development of the Apparatus for In Situ Testing of Solar Panel Racking Anchors" in Proceedings / 11th International Conference on Renewable Electrical Power Sources, Belgrade, 2-3 November, 2023 (2023):495-501,
https://hdl.handle.net/21.15107/rcub_grafar_3294 .

TY  - CONF
AU  - Jelić, Ivana
AU  - Savić, Aleksandar R.
AU  - Miljojčić, Tatjana
AU  - Sljivic-Ivanovic, Marija
AU  - Dimović, Slavko
AU  - Janković, Marija
AU  - Stanić, Vojislav
AU  - Zakić, Dimitrije
AU  - Antonijevic, Dragi
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3279
AB  - The applicability of solid bricks waste in geopolymerization technique was considered. Waste samples were characterized in terms of mineralogical composition by XRD prior to mechanical testing. XRD analysis showed that both brick samples contained anorthite, wollastonite, and mullite as the main components. The compressive strength investigation was carried out by screening method with three geopolymer mixtures. Geopolymer mixtures were prepared with alkaline activators; the mixtures were poured into molds and air-dried for 28 days. The compressive strength of samples was measured according to the standard SRPS EN 12390-3:2010 for cubic samples. The compressive strength values ranged from 9.8 MPa for the newer solid brick, 10.2 MPa for the older solid brick, and 10.5 MPa for the solid brick mix waste geopolymer sample. The most likely underlying reason for the higher compressive strength results of the older solid brick and the mixed sample is their mineral composition, i.e. higher proportion of aluminosilicate. However, all samples showed satisfactory compressive strengths, and it represents an excellent basis for further research.
PB  - IRASA – International Research Academy of Science and Art  Belgrade
C3  - IRASA International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION SETI V 2023 Book of Proceedings
T1  - Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation
EP  - 422
SP  - 416
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3279
ER  - 

@conference{
author = "Jelić, Ivana and Savić, Aleksandar R. and Miljojčić, Tatjana and Sljivic-Ivanovic, Marija and Dimović, Slavko and Janković, Marija and Stanić, Vojislav and Zakić, Dimitrije and Antonijevic, Dragi",
year = "2023",
abstract = "The applicability of solid bricks waste in geopolymerization technique was considered. Waste samples were characterized in terms of mineralogical composition by XRD prior to mechanical testing. XRD analysis showed that both brick samples contained anorthite, wollastonite, and mullite as the main components. The compressive strength investigation was carried out by screening method with three geopolymer mixtures. Geopolymer mixtures were prepared with alkaline activators; the mixtures were poured into molds and air-dried for 28 days. The compressive strength of samples was measured according to the standard SRPS EN 12390-3:2010 for cubic samples. The compressive strength values ranged from 9.8 MPa for the newer solid brick, 10.2 MPa for the older solid brick, and 10.5 MPa for the solid brick mix waste geopolymer sample. The most likely underlying reason for the higher compressive strength results of the older solid brick and the mixed sample is their mineral composition, i.e. higher proportion of aluminosilicate. However, all samples showed satisfactory compressive strengths, and it represents an excellent basis for further research.",
publisher = "IRASA – International Research Academy of Science and Art  Belgrade",
journal = "IRASA International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION SETI V 2023 Book of Proceedings",
title = "Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation",
pages = "422-416",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3279"
}

Jelić, I., Savić, A. R., Miljojčić, T., Sljivic-Ivanovic, M., Dimović, S., Janković, M., Stanić, V., Zakić, D.,& Antonijevic, D.. (2023). Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation. in IRASA International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION SETI V 2023 Book of Proceedings
IRASA – International Research Academy of Science and Art  Belgrade., 416-422.
https://hdl.handle.net/21.15107/rcub_grafar_3279

Jelić I, Savić AR, Miljojčić T, Sljivic-Ivanovic M, Dimović S, Janković M, Stanić V, Zakić D, Antonijevic D. Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation. in IRASA International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION SETI V 2023 Book of Proceedings. 2023;:416-422.
https://hdl.handle.net/21.15107/rcub_grafar_3279 .

Jelić, Ivana, Savić, Aleksandar R., Miljojčić, Tatjana, Sljivic-Ivanovic, Marija, Dimović, Slavko, Janković, Marija, Stanić, Vojislav, Zakić, Dimitrije, Antonijevic, Dragi, "Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation" in IRASA International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION SETI V 2023 Book of Proceedings (2023):416-422,
https://hdl.handle.net/21.15107/rcub_grafar_3279 .

TY  - CONF
AU  - Stanimirovic, Ivanka
AU  - Stanimirovic, Zdravko
AU  - Savić, Aleksandar R.
AU  - Jović, Mladen
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3277
AB  - This paper aims to examine the applicability of thick-film piezo-resistive sensors on steel bars for the structural health monitoring purposes. A thick film ceramic piezo-resistive sensor was manufactured and used to investigate the possibility of its application on a bar. To form the device, Bi2Ru2O7 resistive thick-film composition was used in combination with Pd/Ag conductive composition on alumina ceramic substrates. Six conductive pads divided the resistor into seven identical segments. Sensor was subjected to a three-point bending test. After it was glued to a steel bar like a common foil strain gauge, a four-point bending test was performed on a sensor placed on the upper side of the bar. Under strain, sensor experienced reversible deformation that was registered as a change in the resistivity of the film. Evaluation of the sensor included measurements of the resistance change under the applied strain, determination of the gage factor and investigations of its physical integrity and temperature stability.
PB  - Electron Devices Society of the Institute of electrical and electronics engineers, inc.
C3  - Proc. 2023 IEEE 33rd International Conference on Microelectronics (MIEL)
T1  - Thick Resistive Film Application on Steel Bars for Structural Health Monitoring
EP  - 256
SP  - 253
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3277
ER  - 

@conference{
author = "Stanimirovic, Ivanka and Stanimirovic, Zdravko and Savić, Aleksandar R. and Jović, Mladen",
year = "2023",
abstract = "This paper aims to examine the applicability of thick-film piezo-resistive sensors on steel bars for the structural health monitoring purposes. A thick film ceramic piezo-resistive sensor was manufactured and used to investigate the possibility of its application on a bar. To form the device, Bi2Ru2O7 resistive thick-film composition was used in combination with Pd/Ag conductive composition on alumina ceramic substrates. Six conductive pads divided the resistor into seven identical segments. Sensor was subjected to a three-point bending test. After it was glued to a steel bar like a common foil strain gauge, a four-point bending test was performed on a sensor placed on the upper side of the bar. Under strain, sensor experienced reversible deformation that was registered as a change in the resistivity of the film. Evaluation of the sensor included measurements of the resistance change under the applied strain, determination of the gage factor and investigations of its physical integrity and temperature stability.",
publisher = "Electron Devices Society of the Institute of electrical and electronics engineers, inc.",
journal = "Proc. 2023 IEEE 33rd International Conference on Microelectronics (MIEL)",
title = "Thick Resistive Film Application on Steel Bars for Structural Health Monitoring",
pages = "256-253",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3277"
}

Stanimirovic, I., Stanimirovic, Z., Savić, A. R.,& Jović, M.. (2023). Thick Resistive Film Application on Steel Bars for Structural Health Monitoring. in Proc. 2023 IEEE 33rd International Conference on Microelectronics (MIEL)
Electron Devices Society of the Institute of electrical and electronics engineers, inc.., 253-256.
https://hdl.handle.net/21.15107/rcub_grafar_3277

Stanimirovic I, Stanimirovic Z, Savić AR, Jović M. Thick Resistive Film Application on Steel Bars for Structural Health Monitoring. in Proc. 2023 IEEE 33rd International Conference on Microelectronics (MIEL). 2023;:253-256.
https://hdl.handle.net/21.15107/rcub_grafar_3277 .

Stanimirovic, Ivanka, Stanimirovic, Zdravko, Savić, Aleksandar R., Jović, Mladen, "Thick Resistive Film Application on Steel Bars for Structural Health Monitoring" in Proc. 2023 IEEE 33rd International Conference on Microelectronics (MIEL) (2023):253-256,
https://hdl.handle.net/21.15107/rcub_grafar_3277 .

TY  - CONF
AU  - Jelić, Ivana
AU  - Savić, Aleksandar R.
AU  - Miljojčić, Tatjana
AU  - Sljivic-Ivanovic, Marija
AU  - Janković, Marija
AU  - Dimović, Slavko
AU  - Zakić, Dimitrije
AU  - Antonijevic, Dragi
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3278
AB  - The construction sector is responsible for approximately 39% of energy use and process-related carbon dioxide emissions. Mixing waste materials into concrete, as a substitute for cement 
and/or aggregate, increases energy efficiency and sustainability in general. Additionally, pressure 
on the environment is decreasing by reducing the amount of exploitation of natural raw materials. 
On the other hand, the rapid progress of the electronic industry has led to the generation of a large 
amount of electrical waste before the end of its useful life. Disposal of old monitors and TV screens, i.e. their cathode-ray tubes (CRT), represents a major problem for the environment because CRT waste is classified as hazardous due to its high lead content. This paper deals with an overview of investigations on CRT waste utilization in cement materials in order to increase sustainability and encourage a circular economy in the construction sector.
PB  - Union of Mechanical and   Electrotechnical Engineers and   Technicians of Serbia (SMEITS)  Society for Renewable Electrical   Power Sources  Kneza Miloša str. 7a/II,   11000 Beograd
C3  - Proceedings / 11th International Conference on Renewable Electrical Power Sources
T1  - Cathode Ray Tube Waste Glass in Concrete Preparation - Increasing Sustainability
EP  - 315
SP  - 309
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3278
ER  - 

@conference{
author = "Jelić, Ivana and Savić, Aleksandar R. and Miljojčić, Tatjana and Sljivic-Ivanovic, Marija and Janković, Marija and Dimović, Slavko and Zakić, Dimitrije and Antonijevic, Dragi",
year = "2023",
abstract = "The construction sector is responsible for approximately 39% of energy use and process-related carbon dioxide emissions. Mixing waste materials into concrete, as a substitute for cement 
and/or aggregate, increases energy efficiency and sustainability in general. Additionally, pressure 
on the environment is decreasing by reducing the amount of exploitation of natural raw materials. 
On the other hand, the rapid progress of the electronic industry has led to the generation of a large 
amount of electrical waste before the end of its useful life. Disposal of old monitors and TV screens, i.e. their cathode-ray tubes (CRT), represents a major problem for the environment because CRT waste is classified as hazardous due to its high lead content. This paper deals with an overview of investigations on CRT waste utilization in cement materials in order to increase sustainability and encourage a circular economy in the construction sector.",
publisher = "Union of Mechanical and   Electrotechnical Engineers and   Technicians of Serbia (SMEITS)  Society for Renewable Electrical   Power Sources  Kneza Miloša str. 7a/II,   11000 Beograd",
journal = "Proceedings / 11th International Conference on Renewable Electrical Power Sources",
title = "Cathode Ray Tube Waste Glass in Concrete Preparation - Increasing Sustainability",
pages = "315-309",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3278"
}

Jelić, I., Savić, A. R., Miljojčić, T., Sljivic-Ivanovic, M., Janković, M., Dimović, S., Zakić, D.,& Antonijevic, D.. (2023). Cathode Ray Tube Waste Glass in Concrete Preparation - Increasing Sustainability. in Proceedings / 11th International Conference on Renewable Electrical Power Sources
Union of Mechanical and   Electrotechnical Engineers and   Technicians of Serbia (SMEITS)  Society for Renewable Electrical   Power Sources  Kneza Miloša str. 7a/II,   11000 Beograd., 309-315.
https://hdl.handle.net/21.15107/rcub_grafar_3278

Jelić I, Savić AR, Miljojčić T, Sljivic-Ivanovic M, Janković M, Dimović S, Zakić D, Antonijevic D. Cathode Ray Tube Waste Glass in Concrete Preparation - Increasing Sustainability. in Proceedings / 11th International Conference on Renewable Electrical Power Sources. 2023;:309-315.
https://hdl.handle.net/21.15107/rcub_grafar_3278 .

Jelić, Ivana, Savić, Aleksandar R., Miljojčić, Tatjana, Sljivic-Ivanovic, Marija, Janković, Marija, Dimović, Slavko, Zakić, Dimitrije, Antonijevic, Dragi, "Cathode Ray Tube Waste Glass in Concrete Preparation - Increasing Sustainability" in Proceedings / 11th International Conference on Renewable Electrical Power Sources (2023):309-315,
https://hdl.handle.net/21.15107/rcub_grafar_3278 .

TY  - JOUR
AU  - Šerović, Radmila
AU  - Jelić, Ivana
AU  - Matić, Branislava
AU  - Savić, Aleksandar R.
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3306
AB  - Utilization possibilities of solidified fractions of industrial hazardous waste obtained by mixing
with inert materials in construction were investigated. Waste mineral oils, water-hydrocarbon
emulsions mixture, and waste filter cakes from the physico-chemical treatment of wastewater
generated by washing of patterned rollers for a printing machine, were used as models of
industrial hazardous waste in the solidification process. Investigation comprised preparation of
concrete and asphalt mixtures for further testing. The solidified powder was analyzed regarding
the granulometric composition, while the obtained concrete samples were further subjected
to compressive strength determination, whereas the asphalt mixtures were tested in the
context of potential waterproofing materials. According to the obtained leaching test results,
all the samples met the required conditions for further application. Compressive strength test
results were in the range of 8.7 – 22.6 MPa. Still, the measured compressive strength values
were lower than expected, which is explained using solidified powder fractions of smaller grain
size. According to the results, it can be concluded that the investigated mixtures cannot be used
for structural building elements, but their usage is recommended for elements such as
pavements, roadside, path cubes, concrete haberdashery, etc. Asphalt mixtures showed
acceptable properties in terms of mechanical, durability, and waterproofing tests.
AB  - Ispitivane su mogućnosti korišćenja solidifikovanih frakcija industrijskog opasnog otpada dobijenog njegovim mešanjem sa inertnim materijalima u građevinarstvu. Kao predstavnici industrijskog opasnog otpada u procesu solidifikacije korišćena su otpadna mineralna ulja, mešavina vodeno-ugljovodonične emulzije i otpadne filter pogačeiz fizičko-hemijskog tretmana otpadnih voda nastalih pranjem dezen valjaka na mašini za štampanje. Istraživanje je podrazumevalo pripremu betona i asfaltne mešavine za dalja ispitivanja. Utvrđen je granulometrijski sastav solidifikovanog praha, uzorci betona su dalje podvrgnuti određivanju čvrstoće na pritisak, a asfaltne mešavine su ispitivane u kontekstu hidroizolacionih materijala. Prema dobijenim rezultatima ispitivanja luženja, svi uzorci su ispunjavali potrebne uslove za dalju primenu. Rezultati ispitivanja čvrstoće na pritisak bili su u opsegu od 8,7 – 22,6 MPa. Izmerene vrednosti čvrstoće na pritisak bile su niže od očekivanih, što se objašnjava upotrebom solidifikovanih frakcija manje granulacije. Na osnovu dobijenih rezultata može se zaključiti da se ispitivane mešavine ne mogu koristiti za konstruktivne građevinske elemente, te se preporučuje njihova upotreba za građevinske elemente kao što su trotoari, ivičnjaci, kocke za staze, betonska galanterija i dr. Asfaltne mešavine su pokazale prihvatljiva svojstva u pogledu mehaničkih, ispitivanja izdržljivosti i hidroizolacije.
PB  - ACHE Publishing
T2  - Hemijska industrija
T1  - Utilization of solidified industrial hazardous waste in construction: A case study
EP  - 146
IS  - 2
SP  - 137
VL  - 77
DO  - 10.2298/HEMIND222610001S
ER  - 

@article{
author = "Šerović, Radmila and Jelić, Ivana and Matić, Branislava and Savić, Aleksandar R.",
year = "2023",
abstract = "Utilization possibilities of solidified fractions of industrial hazardous waste obtained by mixing
with inert materials in construction were investigated. Waste mineral oils, water-hydrocarbon
emulsions mixture, and waste filter cakes from the physico-chemical treatment of wastewater
generated by washing of patterned rollers for a printing machine, were used as models of
industrial hazardous waste in the solidification process. Investigation comprised preparation of
concrete and asphalt mixtures for further testing. The solidified powder was analyzed regarding
the granulometric composition, while the obtained concrete samples were further subjected
to compressive strength determination, whereas the asphalt mixtures were tested in the
context of potential waterproofing materials. According to the obtained leaching test results,
all the samples met the required conditions for further application. Compressive strength test
results were in the range of 8.7 – 22.6 MPa. Still, the measured compressive strength values
were lower than expected, which is explained using solidified powder fractions of smaller grain
size. According to the results, it can be concluded that the investigated mixtures cannot be used
for structural building elements, but their usage is recommended for elements such as
pavements, roadside, path cubes, concrete haberdashery, etc. Asphalt mixtures showed
acceptable properties in terms of mechanical, durability, and waterproofing tests., Ispitivane su mogućnosti korišćenja solidifikovanih frakcija industrijskog opasnog otpada dobijenog njegovim mešanjem sa inertnim materijalima u građevinarstvu. Kao predstavnici industrijskog opasnog otpada u procesu solidifikacije korišćena su otpadna mineralna ulja, mešavina vodeno-ugljovodonične emulzije i otpadne filter pogačeiz fizičko-hemijskog tretmana otpadnih voda nastalih pranjem dezen valjaka na mašini za štampanje. Istraživanje je podrazumevalo pripremu betona i asfaltne mešavine za dalja ispitivanja. Utvrđen je granulometrijski sastav solidifikovanog praha, uzorci betona su dalje podvrgnuti određivanju čvrstoće na pritisak, a asfaltne mešavine su ispitivane u kontekstu hidroizolacionih materijala. Prema dobijenim rezultatima ispitivanja luženja, svi uzorci su ispunjavali potrebne uslove za dalju primenu. Rezultati ispitivanja čvrstoće na pritisak bili su u opsegu od 8,7 – 22,6 MPa. Izmerene vrednosti čvrstoće na pritisak bile su niže od očekivanih, što se objašnjava upotrebom solidifikovanih frakcija manje granulacije. Na osnovu dobijenih rezultata može se zaključiti da se ispitivane mešavine ne mogu koristiti za konstruktivne građevinske elemente, te se preporučuje njihova upotreba za građevinske elemente kao što su trotoari, ivičnjaci, kocke za staze, betonska galanterija i dr. Asfaltne mešavine su pokazale prihvatljiva svojstva u pogledu mehaničkih, ispitivanja izdržljivosti i hidroizolacije.",
publisher = "ACHE Publishing",
journal = "Hemijska industrija",
title = "Utilization of solidified industrial hazardous waste in construction: A case study",
pages = "146-137",
number = "2",
volume = "77",
doi = "10.2298/HEMIND222610001S"
}

Šerović, R., Jelić, I., Matić, B.,& Savić, A. R.. (2023). Utilization of solidified industrial hazardous waste in construction: A case study. in Hemijska industrija
ACHE Publishing., 77(2), 137-146.
https://doi.org/10.2298/HEMIND222610001S

Šerović R, Jelić I, Matić B, Savić AR. Utilization of solidified industrial hazardous waste in construction: A case study. in Hemijska industrija. 2023;77(2):137-146.
doi:10.2298/HEMIND222610001S .

Šerović, Radmila, Jelić, Ivana, Matić, Branislava, Savić, Aleksandar R., "Utilization of solidified industrial hazardous waste in construction: A case study" in Hemijska industrija, 77, no. 2 (2023):137-146,
https://doi.org/10.2298/HEMIND222610001S . .

TY  - CONF
AU  - Aškrabić, Marina
AU  - Zakić, Dimitrije
AU  - Savić, Aleksandar R.
AU  - Miličić, Ljiljana
AU  - Delić-Nikolić, Ivana
AU  - Vyšvařil, Martin
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3316
AB  - Although, the salt crystallization is one of the most common causes of the deterioration of lime-based mortars, testing of their resistance to the soluble salt action has not yet been standardized. The problems following the development of the globally accepted testing method are, among others: defining the type of mortar samples, ways of samples’ contamination, the type and the concentration of the salt solutions used, environmental conditions during testing, determination of the damage development and the durability assessment. Another task of the testing method is to explain and connect the processes developing in the materials when they are applied in laboratory and real conditions. In this paper, soluble salt resistance testing of lime mortars on the composite samples is presented. The main focus of the paper is on the determination of the salt distribution in this type of samples after the five wetting and drying cycles. Samples consisted of two lime rendering layers (inner – 1/3 and outer -1/1), both prepared according to the experiences found in the literature for these types of lime mortars when applied on historical structures, placed on the natural stone bases. They were cured in laboratory conditions for 90 days, before drying and exposing to soluble salts action. Two types of 10% salt solutions were used for the test: sodium-chloride and sodium-sulfate. Salt contamination was performed by capillary action only in the first cycle, while in the other cycles samples were wetted by deionized water. After the finalization of the cycles, the detached pieces of mortar and efflorescence were removed from the samples. One of the samples from both groups were then cut in two halves, from which one was used for X-Ray Fluorescence (XRF) and another for Scanning Electron Microscopy with Energy Dispersive X-Ray Analysis (SEM – EDX) characterization. For the XRF analysis samples were divided into four layers, and then crushed and sieved through 0.5 mm sieve before testing. For the SEM-EDX analysis the polished thick cross sections were prepared. The paper presents the results of these two analyses, and discusses the advantages and disadvantages of their application for this purpose. Mineralogical analysis of the samples was performed using XRD analysis. It was shown that XRF analysis provides more precise quantification of the elements within one sample, while SEM-EDX analysis gives possibilities for testing of layers with smaller depth within one cross – section.
PB  - Springer
C3  - Conservation and Restoration of Historic Mortars and Masonry Structures
T1  - Determinationof the salt distribution in the lime-based mortar samples using XRF and SEM-EDX characterization
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3316
ER  - 

@conference{
author = "Aškrabić, Marina and Zakić, Dimitrije and Savić, Aleksandar R. and Miličić, Ljiljana and Delić-Nikolić, Ivana and Vyšvařil, Martin",
year = "2023",
abstract = "Although, the salt crystallization is one of the most common causes of the deterioration of lime-based mortars, testing of their resistance to the soluble salt action has not yet been standardized. The problems following the development of the globally accepted testing method are, among others: defining the type of mortar samples, ways of samples’ contamination, the type and the concentration of the salt solutions used, environmental conditions during testing, determination of the damage development and the durability assessment. Another task of the testing method is to explain and connect the processes developing in the materials when they are applied in laboratory and real conditions. In this paper, soluble salt resistance testing of lime mortars on the composite samples is presented. The main focus of the paper is on the determination of the salt distribution in this type of samples after the five wetting and drying cycles. Samples consisted of two lime rendering layers (inner – 1/3 and outer -1/1), both prepared according to the experiences found in the literature for these types of lime mortars when applied on historical structures, placed on the natural stone bases. They were cured in laboratory conditions for 90 days, before drying and exposing to soluble salts action. Two types of 10% salt solutions were used for the test: sodium-chloride and sodium-sulfate. Salt contamination was performed by capillary action only in the first cycle, while in the other cycles samples were wetted by deionized water. After the finalization of the cycles, the detached pieces of mortar and efflorescence were removed from the samples. One of the samples from both groups were then cut in two halves, from which one was used for X-Ray Fluorescence (XRF) and another for Scanning Electron Microscopy with Energy Dispersive X-Ray Analysis (SEM – EDX) characterization. For the XRF analysis samples were divided into four layers, and then crushed and sieved through 0.5 mm sieve before testing. For the SEM-EDX analysis the polished thick cross sections were prepared. The paper presents the results of these two analyses, and discusses the advantages and disadvantages of their application for this purpose. Mineralogical analysis of the samples was performed using XRD analysis. It was shown that XRF analysis provides more precise quantification of the elements within one sample, while SEM-EDX analysis gives possibilities for testing of layers with smaller depth within one cross – section.",
publisher = "Springer",
journal = "Conservation and Restoration of Historic Mortars and Masonry Structures",
title = "Determinationof the salt distribution in the lime-based mortar samples using XRF and SEM-EDX characterization",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3316"
}

Aškrabić, M., Zakić, D., Savić, A. R., Miličić, L., Delić-Nikolić, I.,& Vyšvařil, M.. (2023). Determinationof the salt distribution in the lime-based mortar samples using XRF and SEM-EDX characterization. in Conservation and Restoration of Historic Mortars and Masonry Structures
Springer..
https://hdl.handle.net/21.15107/rcub_grafar_3316

Aškrabić M, Zakić D, Savić AR, Miličić L, Delić-Nikolić I, Vyšvařil M. Determinationof the salt distribution in the lime-based mortar samples using XRF and SEM-EDX characterization. in Conservation and Restoration of Historic Mortars and Masonry Structures. 2023;.
https://hdl.handle.net/21.15107/rcub_grafar_3316 .

Aškrabić, Marina, Zakić, Dimitrije, Savić, Aleksandar R., Miličić, Ljiljana, Delić-Nikolić, Ivana, Vyšvařil, Martin, "Determinationof the salt distribution in the lime-based mortar samples using XRF and SEM-EDX characterization" in Conservation and Restoration of Historic Mortars and Masonry Structures (2023),
https://hdl.handle.net/21.15107/rcub_grafar_3316 .

TY  - JOUR
AU  - Pešović, Marko
AU  - Pucanović, Zoran
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3456
AB  - In order to further connect structured matrices and integer sequences, r-circulant matrices involving the generalized Narayana numbers are considered. Estimates for spectral norms bounds of such matrices are presented and their eigenvalues are determined. Moreover, the conditions under which the circulant matrix and the skew circulant matrix involving generalized Narayana numbers are invertible are given. In particular, it is shown that every circulant matrix with Narayana numbers is necessarily invertible.
PB  - Journal of Mathematical Inequalities
T2  - Journal of Mathematical Inequalities
T1  - A note on r-circulant matrices involving generalized Narayana numbers
VL  - 17
DO  - 10.7153/jmi-2023-17-84
ER  - 

@article{
author = "Pešović, Marko and Pucanović, Zoran",
year = "2023",
abstract = "In order to further connect structured matrices and integer sequences, r-circulant matrices involving the generalized Narayana numbers are considered. Estimates for spectral norms bounds of such matrices are presented and their eigenvalues are determined. Moreover, the conditions under which the circulant matrix and the skew circulant matrix involving generalized Narayana numbers are invertible are given. In particular, it is shown that every circulant matrix with Narayana numbers is necessarily invertible.",
publisher = "Journal of Mathematical Inequalities",
journal = "Journal of Mathematical Inequalities",
title = "A note on r-circulant matrices involving generalized Narayana numbers",
volume = "17",
doi = "10.7153/jmi-2023-17-84"
}

Pešović, M.,& Pucanović, Z.. (2023). A note on r-circulant matrices involving generalized Narayana numbers. in Journal of Mathematical Inequalities
Journal of Mathematical Inequalities., 17.
https://doi.org/10.7153/jmi-2023-17-84

Pešović M, Pucanović Z. A note on r-circulant matrices involving generalized Narayana numbers. in Journal of Mathematical Inequalities. 2023;17.
doi:10.7153/jmi-2023-17-84 .

Pešović, Marko, Pucanović, Zoran, "A note on r-circulant matrices involving generalized Narayana numbers" in Journal of Mathematical Inequalities, 17 (2023),
https://doi.org/10.7153/jmi-2023-17-84 . .

TY  - JOUR
AU  - Milićević, Ivan
AU  - Milosavljević, Branko
AU  - Spremić, Milan
AU  - Rastislav, Mandić
AU  - Popović, Marko
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3452
AB  - In the past few decades, demountable connectors have often been used for
connections in composite and mixed steel-concrete structures to reduce
construction time and costs. Furthermore, the application of demountable
connectors enables the reuse of structural elements in these structures, which leads
to sustainable design and a circular economy. In this paper, the demountable
connector is made out of two parts: (1) mechanical coupler and rebar anchor placed
in formwork before casting the concrete element, and (2) steel bolt used for
connecting steel to the RC element. Although this connector is increasingly being
used in contemporary building structures, its behaviour in composite connections is
still insufficiently defined. The paper presents the results of experimental tests and
numerical analysis of the connector with a mechanical coupler, focusing on the local
behaviour of the tapered threaded connection between the mechanical coupler and
rebar anchor.
PB  - Society for Materials and Structures Testing of Serbia; Faculty of Civil Engineering, University of Belgrade, Serbia; Association of Structural Engineers of Serbia
T2  - Građevinski materijali i konstrukcije
T1  - Local behaviour of the connector with mechanical coupler and rebar anchor under tension load
EP  - 114
IS  - 2
SP  - 107
VL  - 66
DO  - 10.5937/GRMK2300002M
ER  - 

@article{
author = "Milićević, Ivan and Milosavljević, Branko and Spremić, Milan and Rastislav, Mandić and Popović, Marko",
year = "2023",
abstract = "In the past few decades, demountable connectors have often been used for
connections in composite and mixed steel-concrete structures to reduce
construction time and costs. Furthermore, the application of demountable
connectors enables the reuse of structural elements in these structures, which leads
to sustainable design and a circular economy. In this paper, the demountable
connector is made out of two parts: (1) mechanical coupler and rebar anchor placed
in formwork before casting the concrete element, and (2) steel bolt used for
connecting steel to the RC element. Although this connector is increasingly being
used in contemporary building structures, its behaviour in composite connections is
still insufficiently defined. The paper presents the results of experimental tests and
numerical analysis of the connector with a mechanical coupler, focusing on the local
behaviour of the tapered threaded connection between the mechanical coupler and
rebar anchor.",
publisher = "Society for Materials and Structures Testing of Serbia; Faculty of Civil Engineering, University of Belgrade, Serbia; Association of Structural Engineers of Serbia",
journal = "Građevinski materijali i konstrukcije",
title = "Local behaviour of the connector with mechanical coupler and rebar anchor under tension load",
pages = "114-107",
number = "2",
volume = "66",
doi = "10.5937/GRMK2300002M"
}

Milićević, I., Milosavljević, B., Spremić, M., Rastislav, M.,& Popović, M.. (2023). Local behaviour of the connector with mechanical coupler and rebar anchor under tension load. in Građevinski materijali i konstrukcije
Society for Materials and Structures Testing of Serbia; Faculty of Civil Engineering, University of Belgrade, Serbia; Association of Structural Engineers of Serbia., 66(2), 107-114.
https://doi.org/10.5937/GRMK2300002M

Milićević I, Milosavljević B, Spremić M, Rastislav M, Popović M. Local behaviour of the connector with mechanical coupler and rebar anchor under tension load. in Građevinski materijali i konstrukcije. 2023;66(2):107-114.
doi:10.5937/GRMK2300002M .

Milićević, Ivan, Milosavljević, Branko, Spremić, Milan, Rastislav, Mandić, Popović, Marko, "Local behaviour of the connector with mechanical coupler and rebar anchor under tension load" in Građevinski materijali i konstrukcije, 66, no. 2 (2023):107-114,
https://doi.org/10.5937/GRMK2300002M . .

TY  - CONF
AU  - Ranisavljević, Maja
AU  - Dobrić, Jelena
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3460
AB  - This paper reports the experimental study on compressed I-section short columns with web openings aimed at providing insight on the specific mechanical behaviour underlying the local buckling of the web panel around the opening. The I-section elements with web openings possess a minute flexural stiffness caused by lack of web contribution to the cross-section deformation capacity. In the case of compresses columns, this structural feature implies the high combined stresses around openings caused by compression force, global bending moment and shear force developed during buckling, and local bending moments due to Vierendeel action. The four stub column tests on IPE300-sections with widely spaced (isolated) and closely spaced circular and square web openings (S275 steel grade) was performed to determine their susceptibility to local buckling. The generated experimental data allowed the quantitative assessment of design procedure stated in draft version of new European code prEN 1993-1-13, revealing its good accuracy.
PB  - Novi Sad : Faculty of Technical Sciences
C3  - Proceedings of The 16th International Scientific Conference of iNDiS, Novi Sad, 16-17th November 2023
T1  - Experimental responses of compressed I-section short columns with web openings
EP  - 79
SP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3460
ER  - 

@conference{
author = "Ranisavljević, Maja and Dobrić, Jelena",
year = "2023",
abstract = "This paper reports the experimental study on compressed I-section short columns with web openings aimed at providing insight on the specific mechanical behaviour underlying the local buckling of the web panel around the opening. The I-section elements with web openings possess a minute flexural stiffness caused by lack of web contribution to the cross-section deformation capacity. In the case of compresses columns, this structural feature implies the high combined stresses around openings caused by compression force, global bending moment and shear force developed during buckling, and local bending moments due to Vierendeel action. The four stub column tests on IPE300-sections with widely spaced (isolated) and closely spaced circular and square web openings (S275 steel grade) was performed to determine their susceptibility to local buckling. The generated experimental data allowed the quantitative assessment of design procedure stated in draft version of new European code prEN 1993-1-13, revealing its good accuracy.",
publisher = "Novi Sad : Faculty of Technical Sciences",
journal = "Proceedings of The 16th International Scientific Conference of iNDiS, Novi Sad, 16-17th November 2023",
title = "Experimental responses of compressed I-section short columns with web openings",
pages = "79-70",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3460"
}

Ranisavljević, M.,& Dobrić, J.. (2023). Experimental responses of compressed I-section short columns with web openings. in Proceedings of The 16th International Scientific Conference of iNDiS, Novi Sad, 16-17th November 2023
Novi Sad : Faculty of Technical Sciences., 70-79.
https://hdl.handle.net/21.15107/rcub_grafar_3460

Ranisavljević M, Dobrić J. Experimental responses of compressed I-section short columns with web openings. in Proceedings of The 16th International Scientific Conference of iNDiS, Novi Sad, 16-17th November 2023. 2023;:70-79.
https://hdl.handle.net/21.15107/rcub_grafar_3460 .

Ranisavljević, Maja, Dobrić, Jelena, "Experimental responses of compressed I-section short columns with web openings" in Proceedings of The 16th International Scientific Conference of iNDiS, Novi Sad, 16-17th November 2023 (2023):70-79,
https://hdl.handle.net/21.15107/rcub_grafar_3460 .

TY  - CONF
AU  - Malović, Miodrag
AU  - Vukanić, Vera
AU  - Jevremović, Darko
AU  - Brajović, Ljiljana
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3384
AB  - Pearson’s and Spearman’s methods are most often used in popular software packages to calculate the correlation coefficient between two variables in natural sciences. The (1) difference between them is that the Pearson’s method takes actual numerical values into account whereas the Spearman’s operates with their ranks. Ranking is often efficient in dealing with nonlinearities and outliers in the data. However, not both independent (x) and outcome (y) variable have to be suitable for this. We propose not to rank the independent variable in case it comes sine-shaped. Most notable example of such a variable in nature is the temperature. It is sine-shaped due to day-night and summer-winter transitions. It does not contain many outliers, not only due to the shape, but also because it is often sampled at multiple points and averaged (to be linked with a single outcome variable observation). The proposed method is evaluated in simulations and with experimental data obtained in South Adriatic zooplankton research. Practical advices on how to apply it using popular software tools are given.
PB  - Institute of Electrical and Electronics Engineers Inc
C3  - Proccedings of  10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June, East Sarajevo, Bosnia and Herzegovina 2023
T1  - Mixed Spearman’s Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences
DO  - 10.1109/IcETRAN59631.2023.10192143
ER  - 

@conference{
author = "Malović, Miodrag and Vukanić, Vera and Jevremović, Darko and Brajović, Ljiljana",
year = "2023",
abstract = "Pearson’s and Spearman’s methods are most often used in popular software packages to calculate the correlation coefficient between two variables in natural sciences. The (1) difference between them is that the Pearson’s method takes actual numerical values into account whereas the Spearman’s operates with their ranks. Ranking is often efficient in dealing with nonlinearities and outliers in the data. However, not both independent (x) and outcome (y) variable have to be suitable for this. We propose not to rank the independent variable in case it comes sine-shaped. Most notable example of such a variable in nature is the temperature. It is sine-shaped due to day-night and summer-winter transitions. It does not contain many outliers, not only due to the shape, but also because it is often sampled at multiple points and averaged (to be linked with a single outcome variable observation). The proposed method is evaluated in simulations and with experimental data obtained in South Adriatic zooplankton research. Practical advices on how to apply it using popular software tools are given.",
publisher = "Institute of Electrical and Electronics Engineers Inc",
journal = "Proccedings of  10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June, East Sarajevo, Bosnia and Herzegovina 2023",
title = "Mixed Spearman’s Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences",
doi = "10.1109/IcETRAN59631.2023.10192143"
}

Malović, M., Vukanić, V., Jevremović, D.,& Brajović, L.. (2023). Mixed Spearman’s Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences. in Proccedings of  10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June, East Sarajevo, Bosnia and Herzegovina 2023
Institute of Electrical and Electronics Engineers Inc..
https://doi.org/10.1109/IcETRAN59631.2023.10192143

Malović M, Vukanić V, Jevremović D, Brajović L. Mixed Spearman’s Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences. in Proccedings of  10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June, East Sarajevo, Bosnia and Herzegovina 2023. 2023;.
doi:10.1109/IcETRAN59631.2023.10192143 .

Malović, Miodrag, Vukanić, Vera, Jevremović, Darko, Brajović, Ljiljana, "Mixed Spearman’s Correlation Suitability for Sine-Shaped Independent Variables in Natural Sciences" in Proccedings of  10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN), 05-08 June, East Sarajevo, Bosnia and Herzegovina 2023 (2023),
https://doi.org/10.1109/IcETRAN59631.2023.10192143 . .

TY  - CONF
AU  - Joksimović, Novak
AU  - Brajović, Ljiljana
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3385
AB  - Structural health monitoring (SHM) has gained significant attention in the field of civil engineering due to effective maintenance of structures, particularly bridges. However, traditional SHM methods have limitations in providing accurate and continuous data, which has led researchers to explore new technologies, one of which is fiber optic sensor (FOS) monitoring. This paper provides a comprehensivereview of the use of FOS in bridge SHM, highlighting the challenges and potential of this technology. FOS are convenient for SHM due to their high accuracy, immunity toelectromagnetic interference, and capability of working in harsh environments. They are particularly suitable for quasi-distributive anddistributive measurement systems on capital civil engineering structures. FOS can be utilized to measurevarious parameters, including deformation, temperature, and strain. In bridge constructions, FOS can beinstalled in multiple locations.
Deformation measurements using FOS can provide accurate information on the displacement and
deflection of the bridge, which can help in detecting abnormalities or damages. Temperature
measurements using FOS can detect effects of thermal load on bridges, which can cause significant damage. Strain measurements using FOS can help describe the stress distribution in 
the bridge, which can be used for maintenance purposes. FOS-based SHM systems can provide real-time and continuous data, which can help in detecting any potential problems at an early stage and preventing catastrophic failures. The use of FOS in SHM of bridges has been extensively researched and demonstrated in various studies. However, challenges such as installation, calibration, and interpretation of the data require further research.
The paper will discuss the potential of FOS-based SHM systems in improving the safety and reliability of bridge constructions. It will also highlight the challenges related to FOS installation, calibration, and data interpretation and provide insights into future research directions for developing more robust and cost-effective FOS-based SHM systems.
PB  - MASE - Macedonian Association of Structural Engineers Faculty of Civil Engineering, Blvd. Partizanski odredi No. 24 P.Box. 560, 1000 Skopje, Republic of North Macedonia
C3  - Proceedings of the 20th International Symposium of MASE, Skopje, North Macedonia, 28–29 September 2023
T1  - Challenges and potential of fiber optic sensors for structural health monitoring of bridges: a review
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3385
ER  - 

@conference{
author = "Joksimović, Novak and Brajović, Ljiljana",
year = "2023",
abstract = "Structural health monitoring (SHM) has gained significant attention in the field of civil engineering due to effective maintenance of structures, particularly bridges. However, traditional SHM methods have limitations in providing accurate and continuous data, which has led researchers to explore new technologies, one of which is fiber optic sensor (FOS) monitoring. This paper provides a comprehensivereview of the use of FOS in bridge SHM, highlighting the challenges and potential of this technology. FOS are convenient for SHM due to their high accuracy, immunity toelectromagnetic interference, and capability of working in harsh environments. They are particularly suitable for quasi-distributive anddistributive measurement systems on capital civil engineering structures. FOS can be utilized to measurevarious parameters, including deformation, temperature, and strain. In bridge constructions, FOS can beinstalled in multiple locations.
Deformation measurements using FOS can provide accurate information on the displacement and
deflection of the bridge, which can help in detecting abnormalities or damages. Temperature
measurements using FOS can detect effects of thermal load on bridges, which can cause significant damage. Strain measurements using FOS can help describe the stress distribution in 
the bridge, which can be used for maintenance purposes. FOS-based SHM systems can provide real-time and continuous data, which can help in detecting any potential problems at an early stage and preventing catastrophic failures. The use of FOS in SHM of bridges has been extensively researched and demonstrated in various studies. However, challenges such as installation, calibration, and interpretation of the data require further research.
The paper will discuss the potential of FOS-based SHM systems in improving the safety and reliability of bridge constructions. It will also highlight the challenges related to FOS installation, calibration, and data interpretation and provide insights into future research directions for developing more robust and cost-effective FOS-based SHM systems.",
publisher = "MASE - Macedonian Association of Structural Engineers Faculty of Civil Engineering, Blvd. Partizanski odredi No. 24 P.Box. 560, 1000 Skopje, Republic of North Macedonia",
journal = "Proceedings of the 20th International Symposium of MASE, Skopje, North Macedonia, 28–29 September 2023",
title = "Challenges and potential of fiber optic sensors for structural health monitoring of bridges: a review",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3385"
}

Joksimović, N.,& Brajović, L.. (2023). Challenges and potential of fiber optic sensors for structural health monitoring of bridges: a review. in Proceedings of the 20th International Symposium of MASE, Skopje, North Macedonia, 28–29 September 2023
MASE - Macedonian Association of Structural Engineers Faculty of Civil Engineering, Blvd. Partizanski odredi No. 24 P.Box. 560, 1000 Skopje, Republic of North Macedonia..
https://hdl.handle.net/21.15107/rcub_grafar_3385

Joksimović N, Brajović L. Challenges and potential of fiber optic sensors for structural health monitoring of bridges: a review. in Proceedings of the 20th International Symposium of MASE, Skopje, North Macedonia, 28–29 September 2023. 2023;.
https://hdl.handle.net/21.15107/rcub_grafar_3385 .

Joksimović, Novak, Brajović, Ljiljana, "Challenges and potential of fiber optic sensors for structural health monitoring of bridges: a review" in Proceedings of the 20th International Symposium of MASE, Skopje, North Macedonia, 28–29 September 2023 (2023),
https://hdl.handle.net/21.15107/rcub_grafar_3385 .

TY  - JOUR
AU  - Mićić, Milica
AU  - Brajović, Ljiljana
AU  - Lazarević, Luka
AU  - Popović, Zdenka
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2814
AB  - Rail inspection research is a substantive topic for the railway industry. Management of rolling contact fatigue rail defects is crucial for transport safety worldwide because uncontrolled development of these defects could cause railway accidents, including derailments. This paper presents the review of non-destructive inspection methods for surface and subsurface rolling contact fatigue defects, with particular emphasis on squat and head checking rail defects. Main types of standard and novel non-destructive inspection methods are presented and described from the aspect of basic characteristics, advantages and disadvantages for its practical application for rails in the track, and possible improvements of equipment and software. The presented review is based on the relevant international researches and review papers. In addition, a combination of inspection methods are presented, which can improve the reliability of defect detection.
PB  - Academic Press
T2  - Mechanical Systems and Signal Processing
T1  - Inspection of RCF rail defects – Review of NDT methods
VL  - 182
DO  - 10.1016/j.ymssp.2022.109568
ER  - 

@article{
author = "Mićić, Milica and Brajović, Ljiljana and Lazarević, Luka and Popović, Zdenka",
year = "2023",
abstract = "Rail inspection research is a substantive topic for the railway industry. Management of rolling contact fatigue rail defects is crucial for transport safety worldwide because uncontrolled development of these defects could cause railway accidents, including derailments. This paper presents the review of non-destructive inspection methods for surface and subsurface rolling contact fatigue defects, with particular emphasis on squat and head checking rail defects. Main types of standard and novel non-destructive inspection methods are presented and described from the aspect of basic characteristics, advantages and disadvantages for its practical application for rails in the track, and possible improvements of equipment and software. The presented review is based on the relevant international researches and review papers. In addition, a combination of inspection methods are presented, which can improve the reliability of defect detection.",
publisher = "Academic Press",
journal = "Mechanical Systems and Signal Processing",
title = "Inspection of RCF rail defects – Review of NDT methods",
volume = "182",
doi = "10.1016/j.ymssp.2022.109568"
}

Mićić, M., Brajović, L., Lazarević, L.,& Popović, Z.. (2023). Inspection of RCF rail defects – Review of NDT methods. in Mechanical Systems and Signal Processing
Academic Press., 182.
https://doi.org/10.1016/j.ymssp.2022.109568

Mićić M, Brajović L, Lazarević L, Popović Z. Inspection of RCF rail defects – Review of NDT methods. in Mechanical Systems and Signal Processing. 2023;182.
doi:10.1016/j.ymssp.2022.109568 .

Mićić, Milica, Brajović, Ljiljana, Lazarević, Luka, Popović, Zdenka, "Inspection of RCF rail defects – Review of NDT methods" in Mechanical Systems and Signal Processing, 182 (2023),
https://doi.org/10.1016/j.ymssp.2022.109568 . .

TY  - CONF
AU  - Vasilić, Violeta
AU  - Brajović, Ljiljana
AU  - Petković, Dušan
AU  - Blagojević, Dragan
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3229
AB  - The propagation of the Global Navigation Satellite System (GNSS) signals through the atmosphere is affected by the electron content in the ionosphere and the air density in the electrically neutral troposphere, thus causing a signal delay and leading to errors in the GNSS observations and the estimated positions. 	Our research has been conducted related to the influence of the tropospheric layer of the Earth's atmosphere on signals at geodetic observation stations in the zenith direction. Since tropospheric refraction cannot be directly estimated, the signal delay has been quantified by applying several developed models. As the lowest layer of the atmosphere, the average height of the troposphere is approximately ten kilometers, and it is variable concerning the latitude of the measuring station and seasonal conditions. The tropospheric delay of the GNSS signal - Zenith Total Delay (ZTD), was analyzed on the examples of three International GNSS Service (IGS) stations at different latitudes. Two epochs in July 2022 and January 2023 for each IGS station are considered regarding seasonal differences in the atmospheric parameters. It was found that at each of the IGS stations, there is an oscillation of the ZTD amplitude with a half-day period. Different patterns were distinguished at each station, depending on the station latitude and epoch, i.e., summer or winter atmospheric conditions. For example, a random walk signal was dominant at the ROAG, San Fernando IGS station.
PB  - Faculty of Civil Engineering, University of Belgrade and Institute of Physics Belgrade, University of Belgrade
C3  - Book of Abstracts and Contributed Papers, International Conference on Recent Trends in Geoscience Research and Applications, Belgrade, October 23–27, 2023
T1  - Tropospheric refraction and its influence through Zenith Total Path Delay at different IGS stations
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3229
ER  - 

@conference{
author = "Vasilić, Violeta and Brajović, Ljiljana and Petković, Dušan and Blagojević, Dragan",
year = "2023",
abstract = "The propagation of the Global Navigation Satellite System (GNSS) signals through the atmosphere is affected by the electron content in the ionosphere and the air density in the electrically neutral troposphere, thus causing a signal delay and leading to errors in the GNSS observations and the estimated positions. 	Our research has been conducted related to the influence of the tropospheric layer of the Earth's atmosphere on signals at geodetic observation stations in the zenith direction. Since tropospheric refraction cannot be directly estimated, the signal delay has been quantified by applying several developed models. As the lowest layer of the atmosphere, the average height of the troposphere is approximately ten kilometers, and it is variable concerning the latitude of the measuring station and seasonal conditions. The tropospheric delay of the GNSS signal - Zenith Total Delay (ZTD), was analyzed on the examples of three International GNSS Service (IGS) stations at different latitudes. Two epochs in July 2022 and January 2023 for each IGS station are considered regarding seasonal differences in the atmospheric parameters. It was found that at each of the IGS stations, there is an oscillation of the ZTD amplitude with a half-day period. Different patterns were distinguished at each station, depending on the station latitude and epoch, i.e., summer or winter atmospheric conditions. For example, a random walk signal was dominant at the ROAG, San Fernando IGS station.",
publisher = "Faculty of Civil Engineering, University of Belgrade and Institute of Physics Belgrade, University of Belgrade",
journal = "Book of Abstracts and Contributed Papers, International Conference on Recent Trends in Geoscience Research and Applications, Belgrade, October 23–27, 2023",
title = "Tropospheric refraction and its influence through Zenith Total Path Delay at different IGS stations",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3229"
}

Vasilić, V., Brajović, L., Petković, D.,& Blagojević, D.. (2023). Tropospheric refraction and its influence through Zenith Total Path Delay at different IGS stations. in Book of Abstracts and Contributed Papers, International Conference on Recent Trends in Geoscience Research and Applications, Belgrade, October 23–27, 2023
Faculty of Civil Engineering, University of Belgrade and Institute of Physics Belgrade, University of Belgrade..
https://hdl.handle.net/21.15107/rcub_grafar_3229

Vasilić V, Brajović L, Petković D, Blagojević D. Tropospheric refraction and its influence through Zenith Total Path Delay at different IGS stations. in Book of Abstracts and Contributed Papers, International Conference on Recent Trends in Geoscience Research and Applications, Belgrade, October 23–27, 2023. 2023;.
https://hdl.handle.net/21.15107/rcub_grafar_3229 .

Vasilić, Violeta, Brajović, Ljiljana, Petković, Dušan, Blagojević, Dragan, "Tropospheric refraction and its influence through Zenith Total Path Delay at different IGS stations" in Book of Abstracts and Contributed Papers, International Conference on Recent Trends in Geoscience Research and Applications, Belgrade, October 23–27, 2023 (2023),
https://hdl.handle.net/21.15107/rcub_grafar_3229 .

TY  - JOUR
AU  - Ljubičić, Robert
AU  - Dal Sasso, Silvano Fortunato
AU  - Zindović, Budo
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3374
AB  - Image-based hydrological measurement techniques have surged in popularity over the last decade, with the most common type of data obtained being the open-channel surface velocity field and flow rate. The lack of a feature-rich image velocimetry software often forces practitioners to use multiple tools as part of a cumbersome workflow, which restricts the uptake of such methods and reduces the reproducibility of results. We present the free and open-source software SSIMS-Flow, which handles extraction of video frames, removal of geometric distortions, video stabilization, orthorectification, image enhancement, and velocity and flow rate estimation using the Farnebäck optical flow method improved with specific pooling techniques developed in this study. SSIMS-Flow performance is tested in two case studies and compared with direct reference values and those obtained using industry-standard PIVlab software. In low seeding and tracerless conditions, SSIMS-Flow demonstrates higher velocity estimation accuracy, while delivering several times faster computational runtime.
PB  - Elsevier
T2  - Environmental Modelling and Software
T1  - SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation
DO  - 10.1016/j.envsoft.2023.105938
ER  - 

@article{
author = "Ljubičić, Robert and Dal Sasso, Silvano Fortunato and Zindović, Budo",
year = "2023",
abstract = "Image-based hydrological measurement techniques have surged in popularity over the last decade, with the most common type of data obtained being the open-channel surface velocity field and flow rate. The lack of a feature-rich image velocimetry software often forces practitioners to use multiple tools as part of a cumbersome workflow, which restricts the uptake of such methods and reduces the reproducibility of results. We present the free and open-source software SSIMS-Flow, which handles extraction of video frames, removal of geometric distortions, video stabilization, orthorectification, image enhancement, and velocity and flow rate estimation using the Farnebäck optical flow method improved with specific pooling techniques developed in this study. SSIMS-Flow performance is tested in two case studies and compared with direct reference values and those obtained using industry-standard PIVlab software. In low seeding and tracerless conditions, SSIMS-Flow demonstrates higher velocity estimation accuracy, while delivering several times faster computational runtime.",
publisher = "Elsevier",
journal = "Environmental Modelling and Software",
title = "SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation",
doi = "10.1016/j.envsoft.2023.105938"
}

Ljubičić, R., Dal Sasso, S. F.,& Zindović, B.. (2023). SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation. in Environmental Modelling and Software
Elsevier..
https://doi.org/10.1016/j.envsoft.2023.105938

Ljubičić R, Dal Sasso SF, Zindović B. SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation. in Environmental Modelling and Software. 2023;.
doi:10.1016/j.envsoft.2023.105938 .

Ljubičić, Robert, Dal Sasso, Silvano Fortunato, Zindović, Budo, "SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation" in Environmental Modelling and Software (2023),
https://doi.org/10.1016/j.envsoft.2023.105938 . .

TY  - JOUR
AU  - Đorđević, Dejana
AU  - Pokrajac, Dubravka
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3339
AB  - Sa hidrauličkog stanovišta, prostorni raspored vodene vegetacije u koritima i na obalama vodotoka je slučajan i nezavisan od karakteristika toka. Vegetacija svojim prisustvom pruža otpore kretanju vode i utiče na tran-sportne procese i procese mešanja. Proračun otvorenih tokova sa promenljivim prostornim rasporedom vege-tacije zahteva da se prilikom numeričkog modeliranja vodi računa o konvektivnim članovima, jer oni pored zavisno promenljivih sadrže i prostorno promenljivu poroznost usled prisustva vegetacije u koritu. U ovom radu se za opis linijskih otvorenih tokova sa promenljivim rasporedom vegetacije koriste trostruko osrednjene Navije-Stoksove jednačine (Depth-Integrated Double-Averaged Navier-Stokes - DIDANS equations). Prikazan je postupak njihovog numeričkog rešavanja primenom metode konačnih zapremina. Za diskretizaciju jednačina u kojima se konvektivni član piše u razvijenom obliku da bi se uzela u obzir prostorna promena poroznosti, koristi se računski postupak razdvajanja fluksova (flux-difference splitting) i prilagođena Rouova računska shema za aproksimaciju zavisno promenljivih na granicama kontrolne zapremine. Modifikovan Rouov postupak testiran je na pojednostavljenom, idealizovanom primeru homogenih DIDANS jednačina (horizontalno dno i zanemareni otpori trenja i oblika). Rezultati numeričkog modela upoređeni su sa analitičkim rešenjem za ovaj pojednostavljen slučaj, pri čemu je dobijeno odlično slaganje.
AB  - From the point of view of Engineering Hydraulics, the spatial distribution of the aquatic vegetation in the natural streams and their floodplanes is random and unrelated to the streams' flow characteristics. Aquatic vegetation enhances flow resistance and influences mixing and transport processes. Numerical simulation of open channel flows with variable spatial distribution of aquatic vegetation requires a special treatment of the advective terms, because, besides the main variables, they also contain the spatialy variable porosity due to the presence of vegetation in the channel. In this paper flow in open channels with variable spatial distribution of vegetation is described using triple-averaged Navier-Stokes equations (Depth-Integrated Double-Averaged Navier-Stokes, DIDANS equations). They are solved numerically using the finite volume method. The equations with the advective terms explicitly accounting for the spatial variation of porosity are solved by using the flux difference splitting and Roe's method for approximation of the dependent variables at the boundaries between the computational cells. The modified Roe's method is tested on an idealised case of homogeneous DIDANS equations (horizontal bed and all flow resistance terms neglected). Numerical results for this simplified case are in excellent agreement with the analytical solution.
PB  - Srpsko društvo za odvodnjavanje i navodnjavanje
T2  - Vodoprivreda
T1  - Numeričko modeliranje linijskih otvorenih tokova sa promenljivim rasporedom vegetacije
T1  - Numerical modelling of vegetated open-channel flows with arbitrary distribution of vegetation patches
EP  - 153
IS  - 325-326
SP  - 143
VL  - 55
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3339
ER  - 

@article{
author = "Đorđević, Dejana and Pokrajac, Dubravka",
year = "2023",
abstract = "Sa hidrauličkog stanovišta, prostorni raspored vodene vegetacije u koritima i na obalama vodotoka je slučajan i nezavisan od karakteristika toka. Vegetacija svojim prisustvom pruža otpore kretanju vode i utiče na tran-sportne procese i procese mešanja. Proračun otvorenih tokova sa promenljivim prostornim rasporedom vege-tacije zahteva da se prilikom numeričkog modeliranja vodi računa o konvektivnim članovima, jer oni pored zavisno promenljivih sadrže i prostorno promenljivu poroznost usled prisustva vegetacije u koritu. U ovom radu se za opis linijskih otvorenih tokova sa promenljivim rasporedom vegetacije koriste trostruko osrednjene Navije-Stoksove jednačine (Depth-Integrated Double-Averaged Navier-Stokes - DIDANS equations). Prikazan je postupak njihovog numeričkog rešavanja primenom metode konačnih zapremina. Za diskretizaciju jednačina u kojima se konvektivni član piše u razvijenom obliku da bi se uzela u obzir prostorna promena poroznosti, koristi se računski postupak razdvajanja fluksova (flux-difference splitting) i prilagođena Rouova računska shema za aproksimaciju zavisno promenljivih na granicama kontrolne zapremine. Modifikovan Rouov postupak testiran je na pojednostavljenom, idealizovanom primeru homogenih DIDANS jednačina (horizontalno dno i zanemareni otpori trenja i oblika). Rezultati numeričkog modela upoređeni su sa analitičkim rešenjem za ovaj pojednostavljen slučaj, pri čemu je dobijeno odlično slaganje., From the point of view of Engineering Hydraulics, the spatial distribution of the aquatic vegetation in the natural streams and their floodplanes is random and unrelated to the streams' flow characteristics. Aquatic vegetation enhances flow resistance and influences mixing and transport processes. Numerical simulation of open channel flows with variable spatial distribution of aquatic vegetation requires a special treatment of the advective terms, because, besides the main variables, they also contain the spatialy variable porosity due to the presence of vegetation in the channel. In this paper flow in open channels with variable spatial distribution of vegetation is described using triple-averaged Navier-Stokes equations (Depth-Integrated Double-Averaged Navier-Stokes, DIDANS equations). They are solved numerically using the finite volume method. The equations with the advective terms explicitly accounting for the spatial variation of porosity are solved by using the flux difference splitting and Roe's method for approximation of the dependent variables at the boundaries between the computational cells. The modified Roe's method is tested on an idealised case of homogeneous DIDANS equations (horizontal bed and all flow resistance terms neglected). Numerical results for this simplified case are in excellent agreement with the analytical solution.",
publisher = "Srpsko društvo za odvodnjavanje i navodnjavanje",
journal = "Vodoprivreda",
title = "Numeričko modeliranje linijskih otvorenih tokova sa promenljivim rasporedom vegetacije, Numerical modelling of vegetated open-channel flows with arbitrary distribution of vegetation patches",
pages = "153-143",
number = "325-326",
volume = "55",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3339"
}

Đorđević, D.,& Pokrajac, D.. (2023). Numeričko modeliranje linijskih otvorenih tokova sa promenljivim rasporedom vegetacije. in Vodoprivreda
Srpsko društvo za odvodnjavanje i navodnjavanje., 55(325-326), 143-153.
https://hdl.handle.net/21.15107/rcub_grafar_3339

Đorđević D, Pokrajac D. Numeričko modeliranje linijskih otvorenih tokova sa promenljivim rasporedom vegetacije. in Vodoprivreda. 2023;55(325-326):143-153.
https://hdl.handle.net/21.15107/rcub_grafar_3339 .

Đorđević, Dejana, Pokrajac, Dubravka, "Numeričko modeliranje linijskih otvorenih tokova sa promenljivim rasporedom vegetacije" in Vodoprivreda, 55, no. 325-326 (2023):143-153,
https://hdl.handle.net/21.15107/rcub_grafar_3339 .

TY  - JOUR
AU  - Praštalo, Petar
AU  - Đorđević, Dejana
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3338
AB  - Već trideset godina razmatraju se mogućnosti za poboljšanje metoda za procjenu krive protoka u slučajevima kada se voda izlije iz glavnog korita na plavne površine. Tradicionalne metode zasnovane na podjeli korita za veliku vodu na hidraulički homogene segmente i primjeni Maningove jednačine, vrijednost protoka precjenjuju za više od 60% [1]. Empirijske i fizički zasnovane metode koje su razvijene i unaprijeđene na osnovu mjerenja u laboratorijskim kanalima u uslovima ustaljenog jednolikog i nejednolikog tečenja pokazuju dobro slaganje sa mjerenjima. U ovom radu razmatraju se mogućnosti primjene empirijskog Ekersovog metoda i fizički zasnovanog metoda razmjene količine kretanja (MRKK), između glavnog korita i plavnih površina. Kao primjer primjene navedenih metoda koristi se profil hidrološke stanice Prijedor na rijeci Sani za koju postoje podaci osmatranja u domenu velikih voda. Vrijednosti protoka koje se dobiju na osnovu korišćenih metoda porede se sa vrijednostima sa krive protoka dobijena na osnovu terenskih mjerenja.
AB  - Possibilities for the improvement of the methods for the estimation of rating curves in compound channels in the range of overbank flows have been analysing for thirty years now. It was shown that traditional methods, which divide a compound channel into segments with uniform rougness and use Manning’s equation overestimate the discharge by more than 60%. Empirical and physically based methods that have been developed and improved based on the data collected in laboratory channels under the steady uniform and non-uniform flows show good agreement with new measurements. This paper discusses the possibilities of applying the empirical Ackers method, and the physically based exchange discharge model for the estimation of the overbank rating curve at the river gauging station. The Prijedor gauging station on the Sana River is used in this paper as an example. The choice is based on the availability of the measurement data of high flows. The discharge data obtained by the two methods are compared to the data from the official rating curve for the gauging station.
PB  - Srpsko društvo za odvodnjavanje i navodnjavanje
T2  - Vodoprivreda
T1  - Procjena krive protoka u neprizmatičnom korotu za veliku vodu po metodi Ekersa i metodi razmjene količine kretanja  – primjer rijeke Sane
T1  - Estimation of rating curve in non-prismatic compound channel using  Ackers method and exchange discharge model  – Sana River example –
EP  - 58
IS  - 321-322
SP  - 49
VL  - 55
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3338
ER  - 

@article{
author = "Praštalo, Petar and Đorđević, Dejana",
year = "2023",
abstract = "Već trideset godina razmatraju se mogućnosti za poboljšanje metoda za procjenu krive protoka u slučajevima kada se voda izlije iz glavnog korita na plavne površine. Tradicionalne metode zasnovane na podjeli korita za veliku vodu na hidraulički homogene segmente i primjeni Maningove jednačine, vrijednost protoka precjenjuju za više od 60% [1]. Empirijske i fizički zasnovane metode koje su razvijene i unaprijeđene na osnovu mjerenja u laboratorijskim kanalima u uslovima ustaljenog jednolikog i nejednolikog tečenja pokazuju dobro slaganje sa mjerenjima. U ovom radu razmatraju se mogućnosti primjene empirijskog Ekersovog metoda i fizički zasnovanog metoda razmjene količine kretanja (MRKK), između glavnog korita i plavnih površina. Kao primjer primjene navedenih metoda koristi se profil hidrološke stanice Prijedor na rijeci Sani za koju postoje podaci osmatranja u domenu velikih voda. Vrijednosti protoka koje se dobiju na osnovu korišćenih metoda porede se sa vrijednostima sa krive protoka dobijena na osnovu terenskih mjerenja., Possibilities for the improvement of the methods for the estimation of rating curves in compound channels in the range of overbank flows have been analysing for thirty years now. It was shown that traditional methods, which divide a compound channel into segments with uniform rougness and use Manning’s equation overestimate the discharge by more than 60%. Empirical and physically based methods that have been developed and improved based on the data collected in laboratory channels under the steady uniform and non-uniform flows show good agreement with new measurements. This paper discusses the possibilities of applying the empirical Ackers method, and the physically based exchange discharge model for the estimation of the overbank rating curve at the river gauging station. The Prijedor gauging station on the Sana River is used in this paper as an example. The choice is based on the availability of the measurement data of high flows. The discharge data obtained by the two methods are compared to the data from the official rating curve for the gauging station.",
publisher = "Srpsko društvo za odvodnjavanje i navodnjavanje",
journal = "Vodoprivreda",
title = "Procjena krive protoka u neprizmatičnom korotu za veliku vodu po metodi Ekersa i metodi razmjene količine kretanja  – primjer rijeke Sane, Estimation of rating curve in non-prismatic compound channel using  Ackers method and exchange discharge model  – Sana River example –",
pages = "58-49",
number = "321-322",
volume = "55",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3338"
}

Praštalo, P.,& Đorđević, D.. (2023). Procjena krive protoka u neprizmatičnom korotu za veliku vodu po metodi Ekersa i metodi razmjene količine kretanja  – primjer rijeke Sane. in Vodoprivreda
Srpsko društvo za odvodnjavanje i navodnjavanje., 55(321-322), 49-58.
https://hdl.handle.net/21.15107/rcub_grafar_3338

Praštalo P, Đorđević D. Procjena krive protoka u neprizmatičnom korotu za veliku vodu po metodi Ekersa i metodi razmjene količine kretanja  – primjer rijeke Sane. in Vodoprivreda. 2023;55(321-322):49-58.
https://hdl.handle.net/21.15107/rcub_grafar_3338 .

Praštalo, Petar, Đorđević, Dejana, "Procjena krive protoka u neprizmatičnom korotu za veliku vodu po metodi Ekersa i metodi razmjene količine kretanja  – primjer rijeke Sane" in Vodoprivreda, 55, no. 321-322 (2023):49-58,
https://hdl.handle.net/21.15107/rcub_grafar_3338 .