Gajić, Aleksandar

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  • Gajić, Aleksandar (3)
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Author's Bibliography

Effect of aggregate type and fly ash content on properties of self-compacting concrete

Savić, Aleksandar R.; Broćeta, Gordana; Aškrabić, Marina; Gajić, Aleksandar

(Akademija nauka i umetnosti Republike Srpske, 2019)

TY  - CONF
AU  - Savić, Aleksandar R.
AU  - Broćeta, Gordana
AU  - Aškrabić, Marina
AU  - Gajić, Aleksandar
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2153
AB  - The paper presents the results of experimental study of Self-Compacting Concrete in fresh and hardened state. Five mixtures were made, in which the content of the following components was varied: aggregates, fly ash in as-delivered state and the total amount of the paste (a mixture of water, mineral additive and a binder). Fresh concrete tests included determining the following properties: bulk density, slump-flow, V-funnel time, height ratio of the L-box, as well as ambient temperature measurement. In the hardened state the tested properties included: hardened concrete density, compressive strength, flexural strength, ultrasonic pulse velocity and water penetration depth. Tests have shown that the increase in the content of the paste can improve the workability, as well as reduce the negative effect of the larger fly ash particles presence on the properties of the fresh concrete.
PB  - Akademija nauka i umetnosti Republike Srpske
C3  - Savremeni materijali, Zbornik radova
T1  - Effect of aggregate type and fly ash content on properties of self-compacting concrete
IS  - 38
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2153
ER  - 
@conference{
author = "Savić, Aleksandar R. and Broćeta, Gordana and Aškrabić, Marina and Gajić, Aleksandar",
year = "2019",
abstract = "The paper presents the results of experimental study of Self-Compacting Concrete in fresh and hardened state. Five mixtures were made, in which the content of the following components was varied: aggregates, fly ash in as-delivered state and the total amount of the paste (a mixture of water, mineral additive and a binder). Fresh concrete tests included determining the following properties: bulk density, slump-flow, V-funnel time, height ratio of the L-box, as well as ambient temperature measurement. In the hardened state the tested properties included: hardened concrete density, compressive strength, flexural strength, ultrasonic pulse velocity and water penetration depth. Tests have shown that the increase in the content of the paste can improve the workability, as well as reduce the negative effect of the larger fly ash particles presence on the properties of the fresh concrete.",
publisher = "Akademija nauka i umetnosti Republike Srpske",
journal = "Savremeni materijali, Zbornik radova",
title = "Effect of aggregate type and fly ash content on properties of self-compacting concrete",
number = "38",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2153"
}
Savić, A. R., Broćeta, G., Aškrabić, M.,& Gajić, A.. (2019). Effect of aggregate type and fly ash content on properties of self-compacting concrete. in Savremeni materijali, Zbornik radova
Akademija nauka i umetnosti Republike Srpske.(38).
https://hdl.handle.net/21.15107/rcub_grafar_2153
Savić AR, Broćeta G, Aškrabić M, Gajić A. Effect of aggregate type and fly ash content on properties of self-compacting concrete. in Savremeni materijali, Zbornik radova. 2019;(38).
https://hdl.handle.net/21.15107/rcub_grafar_2153 .
Savić, Aleksandar R., Broćeta, Gordana, Aškrabić, Marina, Gajić, Aleksandar, "Effect of aggregate type and fly ash content on properties of self-compacting concrete" in Savremeni materijali, Zbornik radova, no. 38 (2019),
https://hdl.handle.net/21.15107/rcub_grafar_2153 .

Possible use of hydropower potential of cooling water at the thermal power plant

Savić, Ljubodrag; Kuzmanović, Vladan; Dašić, Tina; Milovanović, Bojan; Stevanović, Vladimir; Gajić, Aleksandar; Maslovarić, Blaženka; Prica, Sanja; Arnautović, Dušan

(Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd, 2011)

TY  - JOUR
AU  - Savić, Ljubodrag
AU  - Kuzmanović, Vladan
AU  - Dašić, Tina
AU  - Milovanović, Bojan
AU  - Stevanović, Vladimir
AU  - Gajić, Aleksandar
AU  - Maslovarić, Blaženka
AU  - Prica, Sanja
AU  - Arnautović, Dušan
PY  - 2011
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/389
AB  - Possibility of using hydropower potential of cooling water at the thermal power plant with open cooling system is presented in the paper. Cooling water flows gravitationally to the recipient - the river. In the periods of low water levels additional head occurs which could be used in small hydropower plant. Such a hydropower plant will operate only in periods when thermal power plant operates, with more or less constant flow and head that significantly changes in time. Small hydropower plant that uses cooling water of Thermal Power Plant 'Nikola Tesla B' is presented in the paper. The economic benefits of the HPP are calculated. The increase of profitability is assessed, bearing in mind that the plant would be realized as the Clean Development Mechanism project according to the Kyoto protocol. The obtained results show that the project is economically attractive, and it can be carried out with standard matured solutions of hydro turbines available at the market.
AB  - U radu je prikazana mogućnost korišćenja hidroenergetskog potencijala rashladne vode termoelektrane sa otvorenim sistemom hlađenja. Rashladna voda otiče gravitaciono do recipijenta - reke, zbog čega se u periodu nižih vodostaja javlja pad koji je moguće iskoristiti u maloj hidoelektrani. Takva hidroelektrana radi sa promenljivim padom i približno konstantnim protokom, i to samo u periodima kada radi i termoelektrana. Koncepcija je prikazana na primeru male hidroelektrane koja će koristiti hidroenergetski potencijal rashladne vode TE 'Nikola Tesla B'. Određeni su ekonomski pokazatelji ove hidroelektrane i ocenjeno je povećanje profitabilnosti imajući u vidu da postrojenje može biTI ostvareno u okvira Clean Development Mechanism (CDM) projekta, u skladu sa Kjoto protokolom. Dobijeni rezultati pokazuju da je projekat ekonomski prihvatljiv, a moguće ga je ostvariti sa standardnim hidroturbinama dostupnim na tržištu.
PB  - Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd
T2  - Vodoprivreda
T1  - Possible use of hydropower potential of cooling water at the thermal power plant
T1  - Mogućnost korišćenja hidroenergetskog potencijala vode za hlađenje termoelektrana
EP  - 48
IS  - 1-3
SP  - 39
VL  - 43
UR  - https://hdl.handle.net/21.15107/rcub_grafar_389
ER  - 
@article{
author = "Savić, Ljubodrag and Kuzmanović, Vladan and Dašić, Tina and Milovanović, Bojan and Stevanović, Vladimir and Gajić, Aleksandar and Maslovarić, Blaženka and Prica, Sanja and Arnautović, Dušan",
year = "2011",
abstract = "Possibility of using hydropower potential of cooling water at the thermal power plant with open cooling system is presented in the paper. Cooling water flows gravitationally to the recipient - the river. In the periods of low water levels additional head occurs which could be used in small hydropower plant. Such a hydropower plant will operate only in periods when thermal power plant operates, with more or less constant flow and head that significantly changes in time. Small hydropower plant that uses cooling water of Thermal Power Plant 'Nikola Tesla B' is presented in the paper. The economic benefits of the HPP are calculated. The increase of profitability is assessed, bearing in mind that the plant would be realized as the Clean Development Mechanism project according to the Kyoto protocol. The obtained results show that the project is economically attractive, and it can be carried out with standard matured solutions of hydro turbines available at the market., U radu je prikazana mogućnost korišćenja hidroenergetskog potencijala rashladne vode termoelektrane sa otvorenim sistemom hlađenja. Rashladna voda otiče gravitaciono do recipijenta - reke, zbog čega se u periodu nižih vodostaja javlja pad koji je moguće iskoristiti u maloj hidoelektrani. Takva hidroelektrana radi sa promenljivim padom i približno konstantnim protokom, i to samo u periodima kada radi i termoelektrana. Koncepcija je prikazana na primeru male hidroelektrane koja će koristiti hidroenergetski potencijal rashladne vode TE 'Nikola Tesla B'. Određeni su ekonomski pokazatelji ove hidroelektrane i ocenjeno je povećanje profitabilnosti imajući u vidu da postrojenje može biTI ostvareno u okvira Clean Development Mechanism (CDM) projekta, u skladu sa Kjoto protokolom. Dobijeni rezultati pokazuju da je projekat ekonomski prihvatljiv, a moguće ga je ostvariti sa standardnim hidroturbinama dostupnim na tržištu.",
publisher = "Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd",
journal = "Vodoprivreda",
title = "Possible use of hydropower potential of cooling water at the thermal power plant, Mogućnost korišćenja hidroenergetskog potencijala vode za hlađenje termoelektrana",
pages = "48-39",
number = "1-3",
volume = "43",
url = "https://hdl.handle.net/21.15107/rcub_grafar_389"
}
Savić, L., Kuzmanović, V., Dašić, T., Milovanović, B., Stevanović, V., Gajić, A., Maslovarić, B., Prica, S.,& Arnautović, D.. (2011). Possible use of hydropower potential of cooling water at the thermal power plant. in Vodoprivreda
Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd., 43(1-3), 39-48.
https://hdl.handle.net/21.15107/rcub_grafar_389
Savić L, Kuzmanović V, Dašić T, Milovanović B, Stevanović V, Gajić A, Maslovarić B, Prica S, Arnautović D. Possible use of hydropower potential of cooling water at the thermal power plant. in Vodoprivreda. 2011;43(1-3):39-48.
https://hdl.handle.net/21.15107/rcub_grafar_389 .
Savić, Ljubodrag, Kuzmanović, Vladan, Dašić, Tina, Milovanović, Bojan, Stevanović, Vladimir, Gajić, Aleksandar, Maslovarić, Blaženka, Prica, Sanja, Arnautović, Dušan, "Possible use of hydropower potential of cooling water at the thermal power plant" in Vodoprivreda, 43, no. 1-3 (2011):39-48,
https://hdl.handle.net/21.15107/rcub_grafar_389 .

Hydro energy potential of cooling water at the thermal power plant

Stevanović, Vladimir; Gajić, Aleksandar; Savić, Ljubodrag; Kuzmanović, Vladan; Arnautović, Dušan; Dašić, Tina; Maslovarić, Blaženka; Prica, Sanja; Milovanović, Bojan

(Elsevier Ltd, 2011)

TY  - JOUR
AU  - Stevanović, Vladimir
AU  - Gajić, Aleksandar
AU  - Savić, Ljubodrag
AU  - Kuzmanović, Vladan
AU  - Arnautović, Dušan
AU  - Dašić, Tina
AU  - Maslovarić, Blaženka
AU  - Prica, Sanja
AU  - Milovanović, Bojan
PY  - 2011
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/360
AB  - The hydro energy of the gravity water flow from the coal-fired thermal power plant units to the river in an open cooling system of turbine condensers is determined. On the basis of statistical data for a long time period, the water net head duration curve due to the river annual level change, as well as the reduction of the hydro energy potential due to the thermal power plant overhauls periods, are evaluated in the case study of the Thermal Power Plant "Nikola Tesla B" in Serbia. A small hydro power plant is designed for the utilization of this hydro energy, and the economic benefits of the project are calculated. The internal rate of returns and pay back periods are calculated in dependence of the electricity price and total investment costs. The increase of profitability is assessed, bearing in mind that the plant might be realized as the Clean Development Mechanism project according to the Kyoto protocol. The obtained results show that the project is economically attractive, and it can be carried out with standard matured solutions of hydro turbines available at the market. Even for the relatively low electricity price from small hydro power plants in Serbia of 0.08 epsilon/kW h the internal rate of return and the pay back period are 17.5% and 5.5 years.
PB  - Elsevier Ltd
T2  - Applied Energy
T1  - Hydro energy potential of cooling water at the thermal power plant
EP  - 4013
IS  - 11
SP  - 4005
VL  - 88
DO  - 10.1016/j.apenergy.2011.04.003
ER  - 
@article{
author = "Stevanović, Vladimir and Gajić, Aleksandar and Savić, Ljubodrag and Kuzmanović, Vladan and Arnautović, Dušan and Dašić, Tina and Maslovarić, Blaženka and Prica, Sanja and Milovanović, Bojan",
year = "2011",
abstract = "The hydro energy of the gravity water flow from the coal-fired thermal power plant units to the river in an open cooling system of turbine condensers is determined. On the basis of statistical data for a long time period, the water net head duration curve due to the river annual level change, as well as the reduction of the hydro energy potential due to the thermal power plant overhauls periods, are evaluated in the case study of the Thermal Power Plant "Nikola Tesla B" in Serbia. A small hydro power plant is designed for the utilization of this hydro energy, and the economic benefits of the project are calculated. The internal rate of returns and pay back periods are calculated in dependence of the electricity price and total investment costs. The increase of profitability is assessed, bearing in mind that the plant might be realized as the Clean Development Mechanism project according to the Kyoto protocol. The obtained results show that the project is economically attractive, and it can be carried out with standard matured solutions of hydro turbines available at the market. Even for the relatively low electricity price from small hydro power plants in Serbia of 0.08 epsilon/kW h the internal rate of return and the pay back period are 17.5% and 5.5 years.",
publisher = "Elsevier Ltd",
journal = "Applied Energy",
title = "Hydro energy potential of cooling water at the thermal power plant",
pages = "4013-4005",
number = "11",
volume = "88",
doi = "10.1016/j.apenergy.2011.04.003"
}
Stevanović, V., Gajić, A., Savić, L., Kuzmanović, V., Arnautović, D., Dašić, T., Maslovarić, B., Prica, S.,& Milovanović, B.. (2011). Hydro energy potential of cooling water at the thermal power plant. in Applied Energy
Elsevier Ltd., 88(11), 4005-4013.
https://doi.org/10.1016/j.apenergy.2011.04.003
Stevanović V, Gajić A, Savić L, Kuzmanović V, Arnautović D, Dašić T, Maslovarić B, Prica S, Milovanović B. Hydro energy potential of cooling water at the thermal power plant. in Applied Energy. 2011;88(11):4005-4013.
doi:10.1016/j.apenergy.2011.04.003 .
Stevanović, Vladimir, Gajić, Aleksandar, Savić, Ljubodrag, Kuzmanović, Vladan, Arnautović, Dušan, Dašić, Tina, Maslovarić, Blaženka, Prica, Sanja, Milovanović, Bojan, "Hydro energy potential of cooling water at the thermal power plant" in Applied Energy, 88, no. 11 (2011):4005-4013,
https://doi.org/10.1016/j.apenergy.2011.04.003 . .
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