TY  - CONF
AU  - Božović, Nikola
AU  - Krstić, Marija
AU  - Todorović, Goran
AU  - Gospavić, Radovan
AU  - Mirković-Marjanović, Milica
AU  - Ilić, Snežana
AU  - Kijanović, Aleksandar
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3051
AB  - The thermal conductivity of a material is the parameter that is most reliably
determined experimentally. The problem of determining the thermal conductivity
in the soil is greater because the soil is heterogeneous, so for the same soil this
parameter may be different depending on the their ohysical characteristics.
Therefore, it is necessary to adopt an appropiate model for describing the thermal
conductivity of the soil for a particular location after the necessary tests are
performed. This paper is based on experimental measurements of soil thermal
conductivity as a function of moisture content in the area of the ,Nikola Tesla
Airport construction site in Surčin and the adoption of one of the existing
theoretical models that would satisfactorily describe changes in thermal
consuctivity. Based on the obtained results of experimental reasearche, a two-
parameter fitting of the measured values of thermal conductivity of the soil was
performed in Cote-Konrad model, which proves to be reliable and the simplest to
describe the thermal properties of loess in the area of Belgrade.
C3  - 5th Symposium of the Macedonian Association for Geotechnics, Ohrid, North Macedonia, 2022.
T1  - Measurement and modeling of thermal conductivity of loess  at the location of the Airport Nikola Tesla in Surcin
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3051
ER  - 

@conference{
author = "Božović, Nikola and Krstić, Marija and Todorović, Goran and Gospavić, Radovan and Mirković-Marjanović, Milica and Ilić, Snežana and Kijanović, Aleksandar",
year = "2022",
abstract = "The thermal conductivity of a material is the parameter that is most reliably
determined experimentally. The problem of determining the thermal conductivity
in the soil is greater because the soil is heterogeneous, so for the same soil this
parameter may be different depending on the their ohysical characteristics.
Therefore, it is necessary to adopt an appropiate model for describing the thermal
conductivity of the soil for a particular location after the necessary tests are
performed. This paper is based on experimental measurements of soil thermal
conductivity as a function of moisture content in the area of the ,Nikola Tesla
Airport construction site in Surčin and the adoption of one of the existing
theoretical models that would satisfactorily describe changes in thermal
consuctivity. Based on the obtained results of experimental reasearche, a two-
parameter fitting of the measured values of thermal conductivity of the soil was
performed in Cote-Konrad model, which proves to be reliable and the simplest to
describe the thermal properties of loess in the area of Belgrade.",
journal = "5th Symposium of the Macedonian Association for Geotechnics, Ohrid, North Macedonia, 2022.",
title = "Measurement and modeling of thermal conductivity of loess  at the location of the Airport Nikola Tesla in Surcin",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3051"
}

Božović, N., Krstić, M., Todorović, G., Gospavić, R., Mirković-Marjanović, M., Ilić, S.,& Kijanović, A.. (2022). Measurement and modeling of thermal conductivity of loess  at the location of the Airport Nikola Tesla in Surcin. in 5th Symposium of the Macedonian Association for Geotechnics, Ohrid, North Macedonia, 2022..
https://hdl.handle.net/21.15107/rcub_grafar_3051

Božović N, Krstić M, Todorović G, Gospavić R, Mirković-Marjanović M, Ilić S, Kijanović A. Measurement and modeling of thermal conductivity of loess  at the location of the Airport Nikola Tesla in Surcin. in 5th Symposium of the Macedonian Association for Geotechnics, Ohrid, North Macedonia, 2022.. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_3051 .

Božović, Nikola, Krstić, Marija, Todorović, Goran, Gospavić, Radovan, Mirković-Marjanović, Milica, Ilić, Snežana, Kijanović, Aleksandar, "Measurement and modeling of thermal conductivity of loess  at the location of the Airport Nikola Tesla in Surcin" in 5th Symposium of the Macedonian Association for Geotechnics, Ohrid, North Macedonia, 2022. (2022),
https://hdl.handle.net/21.15107/rcub_grafar_3051 .

TY  - CONF
AU  - Mitrović, Stefan M.
AU  - Todorović, Goran
AU  - Kostic, Bojan
AU  - Mirković Marjanović, Milica
AU  - Božović, Nikola
AU  - Krstić, Marija
AU  - Erić, Aleksandar
AU  - Gospavić, Radovan
AU  - Snežana, Ilić
AU  - Kijanović, Aleksandar
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2903
AB  - The paper presents uniaxial compressive strength test according to SRPS EN 1926. Uniaxial
compressive strength test was performed on 12 identical cube-shaped specimen’s dimensions 70 mm x
70 mm x 70 mm, which are made of sandstone. Samples were brought form Laz tunnel and were
divided into two groups of six samples. First group of samples consists of 6 samples tested for uniaxial
compressive strength. Second group of samples consists of 6 samples exposed to standard fire test
according to SRPS EN 1363-1, with the intention to test uniaxial compressive strength after standard
fire test. The aim of this study was to examine the uniaxial compressive strength of the rock, before
and after standard fire test on the rock mass. The paper presents the strengths of the specimens tested
before and after standard fire test.
C3  - Engineering problems in soft rock / Fifth symposium of the Macedonian Association for Geotechnics
T1  - Uniaxial compressive strength test before and after standard fire test on rock mass
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2903
ER  - 

@conference{
author = "Mitrović, Stefan M. and Todorović, Goran and Kostic, Bojan and Mirković Marjanović, Milica and Božović, Nikola and Krstić, Marija and Erić, Aleksandar and Gospavić, Radovan and Snežana, Ilić and Kijanović, Aleksandar",
year = "2022",
abstract = "The paper presents uniaxial compressive strength test according to SRPS EN 1926. Uniaxial
compressive strength test was performed on 12 identical cube-shaped specimen’s dimensions 70 mm x
70 mm x 70 mm, which are made of sandstone. Samples were brought form Laz tunnel and were
divided into two groups of six samples. First group of samples consists of 6 samples tested for uniaxial
compressive strength. Second group of samples consists of 6 samples exposed to standard fire test
according to SRPS EN 1363-1, with the intention to test uniaxial compressive strength after standard
fire test. The aim of this study was to examine the uniaxial compressive strength of the rock, before
and after standard fire test on the rock mass. The paper presents the strengths of the specimens tested
before and after standard fire test.",
journal = "Engineering problems in soft rock / Fifth symposium of the Macedonian Association for Geotechnics",
title = "Uniaxial compressive strength test before and after standard fire test on rock mass",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2903"
}

Mitrović, S. M., Todorović, G., Kostic, B., Mirković Marjanović, M., Božović, N., Krstić, M., Erić, A., Gospavić, R., Snežana, I.,& Kijanović, A.. (2022). Uniaxial compressive strength test before and after standard fire test on rock mass. in Engineering problems in soft rock / Fifth symposium of the Macedonian Association for Geotechnics, 1.
https://hdl.handle.net/21.15107/rcub_grafar_2903

Mitrović SM, Todorović G, Kostic B, Mirković Marjanović M, Božović N, Krstić M, Erić A, Gospavić R, Snežana I, Kijanović A. Uniaxial compressive strength test before and after standard fire test on rock mass. in Engineering problems in soft rock / Fifth symposium of the Macedonian Association for Geotechnics. 2022;1.
https://hdl.handle.net/21.15107/rcub_grafar_2903 .

Mitrović, Stefan M., Todorović, Goran, Kostic, Bojan, Mirković Marjanović, Milica, Božović, Nikola, Krstić, Marija, Erić, Aleksandar, Gospavić, Radovan, Snežana, Ilić, Kijanović, Aleksandar, "Uniaxial compressive strength test before and after standard fire test on rock mass" in Engineering problems in soft rock / Fifth symposium of the Macedonian Association for Geotechnics, 1 (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2903 .

TY  - CONF
AU  - Krstić, Marija
AU  - Božović, Nikola
AU  - Mitrović, Stefan M.
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2598
AB  - U radu je prikazana komparacija rezultata ispitivanja šipova, opitom statičkog probnog opterećenja na vertikalnu silu pritiska za objekat “GRINFILD” postrojenja za proizvodnju čokolade u Novom Sadu. Prikazana su tri ispitivanja šipa izvedena u istoj geološko geotehničkoj građi terena koji su izvedeni različitim tehnologijama. Razmatraće se CFA šip prečnika Ø600 mm, SDP šip prečnika Ø510mm i Franky šip prečnika Ø520mm. Dužine ispitivanih šipova iznose L= 16.0 m.
C3  - Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva
T1  - Komparacija rezultata dobijenih ispitivanjem šipova koji su izvedeni različitim tehnologijama u istim geološkim uslovima
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2598
ER  - 

@conference{
author = "Krstić, Marija and Božović, Nikola and Mitrović, Stefan M.",
year = "2021",
abstract = "U radu je prikazana komparacija rezultata ispitivanja šipova, opitom statičkog probnog opterećenja na vertikalnu silu pritiska za objekat “GRINFILD” postrojenja za proizvodnju čokolade u Novom Sadu. Prikazana su tri ispitivanja šipa izvedena u istoj geološko geotehničkoj građi terena koji su izvedeni različitim tehnologijama. Razmatraće se CFA šip prečnika Ø600 mm, SDP šip prečnika Ø510mm i Franky šip prečnika Ø520mm. Dužine ispitivanih šipova iznose L= 16.0 m.",
journal = "Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva",
title = "Komparacija rezultata dobijenih ispitivanjem šipova koji su izvedeni različitim tehnologijama u istim geološkim uslovima",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2598"
}

Krstić, M., Božović, N.,& Mitrović, S. M.. (2021). Komparacija rezultata dobijenih ispitivanjem šipova koji su izvedeni različitim tehnologijama u istim geološkim uslovima. in Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva.
https://hdl.handle.net/21.15107/rcub_grafar_2598

Krstić M, Božović N, Mitrović SM. Komparacija rezultata dobijenih ispitivanjem šipova koji su izvedeni različitim tehnologijama u istim geološkim uslovima. in Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva. 2021;.
https://hdl.handle.net/21.15107/rcub_grafar_2598 .

Krstić, Marija, Božović, Nikola, Mitrović, Stefan M., "Komparacija rezultata dobijenih ispitivanjem šipova koji su izvedeni različitim tehnologijama u istim geološkim uslovima" in Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva (2021),
https://hdl.handle.net/21.15107/rcub_grafar_2598 .

TY  - CONF
AU  - Božović, Nikola
AU  - Krstić, Marija
AU  - Mitrović, Stefan M.
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2597
AB  - У раду је приказана метода испитивања интегритета шипова Sonic Integrity Test (SIT) којом се утврђује да ли геометрија шипа задовољава пројектне захтеве у погледу усвојеног пречника и дужине шипа. Издвојени су карактеристични примери шипова из праксе код којих су рефлектограми добијени тестом интегритета указали на могуће неправилности у грађи шипова. Како је тест интегритета шипа недеструктивна метода, тумачење рефлектограма може да има одређени ниво непоузданости. Накнадно су спроведене деструктивне методе бушења кроз тело шипа или је спроведен тест оптерећења за утврђивање носивости шипа како би се потврдила инжењерска процена интегритета шипа.
C3  - Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva
T1  - Kontrola rezultata testa integriteta šipova-karakteristični primeri iz prakse
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2597
ER  - 

@conference{
author = "Božović, Nikola and Krstić, Marija and Mitrović, Stefan M.",
year = "2021",
abstract = "У раду је приказана метода испитивања интегритета шипова Sonic Integrity Test (SIT) којом се утврђује да ли геометрија шипа задовољава пројектне захтеве у погледу усвојеног пречника и дужине шипа. Издвојени су карактеристични примери шипова из праксе код којих су рефлектограми добијени тестом интегритета указали на могуће неправилности у грађи шипова. Како је тест интегритета шипа недеструктивна метода, тумачење рефлектограма може да има одређени ниво непоузданости. Накнадно су спроведене деструктивне методе бушења кроз тело шипа или је спроведен тест оптерећења за утврђивање носивости шипа како би се потврдила инжењерска процена интегритета шипа.",
journal = "Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva",
title = "Kontrola rezultata testa integriteta šipova-karakteristični primeri iz prakse",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2597"
}

Božović, N., Krstić, M.,& Mitrović, S. M.. (2021). Kontrola rezultata testa integriteta šipova-karakteristični primeri iz prakse. in Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva.
https://hdl.handle.net/21.15107/rcub_grafar_2597

Božović N, Krstić M, Mitrović SM. Kontrola rezultata testa integriteta šipova-karakteristični primeri iz prakse. in Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva. 2021;.
https://hdl.handle.net/21.15107/rcub_grafar_2597 .

Božović, Nikola, Krstić, Marija, Mitrović, Stefan M., "Kontrola rezultata testa integriteta šipova-karakteristični primeri iz prakse" in Zbornik radova međunarodno naučno-stručnog savetovanja zemljotresno inženjerstvo i geotehnički aspekti građevinarstva (2021),
https://hdl.handle.net/21.15107/rcub_grafar_2597 .

TY  - CONF
AU  - Šumarac, Dragoslav
AU  - Božović, Nikola
AU  - Krstić, Marija
AU  - Mitrović, Stefan M.
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2594
AB  - Mathematical modeling of engineering materials is important issue in design 
of structures. Model itself should satisfy two conditions: first to explain in the best way 
mechanical behavior of material and second to be as simple as possible for easy everyday 
application in engineering. In the present paper the Preisach model is applied to 
behaviour of clay as an elasto-plastic material under direct shear test. The clay sample 
was taken by exploratory drilling on the territory of Šimanovci from a depth of 9.1 m to 
9.3 m. First, an experimental examination of a clay sample was performed in order to 
classify and determine the resistance-deformable characteristics. The clay is classified as 
CH-clay of high plasticity. The sample was then subjected to direct shear test. All obtained 
results clearly show advantages of the Preisach model for describing behavior of elasto plastic material. This analytical model allows an accurate computation of all points on 
the result curve from the direct shear test.
C3  - Zbornik radova 8. međunarodne konferencije savremena dostignuća u građevinarstvu 2021.
T1  - Preisach model used to describe response of clay in direct shear test
DO  - 10.14415/konferencijaGFS2021.26
ER  - 

@conference{
author = "Šumarac, Dragoslav and Božović, Nikola and Krstić, Marija and Mitrović, Stefan M.",
year = "2021",
abstract = "Mathematical modeling of engineering materials is important issue in design 
of structures. Model itself should satisfy two conditions: first to explain in the best way 
mechanical behavior of material and second to be as simple as possible for easy everyday 
application in engineering. In the present paper the Preisach model is applied to 
behaviour of clay as an elasto-plastic material under direct shear test. The clay sample 
was taken by exploratory drilling on the territory of Šimanovci from a depth of 9.1 m to 
9.3 m. First, an experimental examination of a clay sample was performed in order to 
classify and determine the resistance-deformable characteristics. The clay is classified as 
CH-clay of high plasticity. The sample was then subjected to direct shear test. All obtained 
results clearly show advantages of the Preisach model for describing behavior of elasto plastic material. This analytical model allows an accurate computation of all points on 
the result curve from the direct shear test.",
journal = "Zbornik radova 8. međunarodne konferencije savremena dostignuća u građevinarstvu 2021.",
title = "Preisach model used to describe response of clay in direct shear test",
doi = "10.14415/konferencijaGFS2021.26"
}

Šumarac, D., Božović, N., Krstić, M.,& Mitrović, S. M.. (2021). Preisach model used to describe response of clay in direct shear test. in Zbornik radova 8. međunarodne konferencije savremena dostignuća u građevinarstvu 2021..
https://doi.org/10.14415/konferencijaGFS2021.26

Šumarac D, Božović N, Krstić M, Mitrović SM. Preisach model used to describe response of clay in direct shear test. in Zbornik radova 8. međunarodne konferencije savremena dostignuća u građevinarstvu 2021.. 2021;.
doi:10.14415/konferencijaGFS2021.26 .

Šumarac, Dragoslav, Božović, Nikola, Krstić, Marija, Mitrović, Stefan M., "Preisach model used to describe response of clay in direct shear test" in Zbornik radova 8. međunarodne konferencije savremena dostignuća u građevinarstvu 2021. (2021),
https://doi.org/10.14415/konferencijaGFS2021.26 . .