TY  - JOUR
AU  - Zisic, Tijana
AU  - Rajcic, Aleksandar
AU  - Vasovic, Dejan
PY  - 2023
UR  - https://raf.arh.bg.ac.rs/handle/123456789/1356
AB  - The paper presents energy efficient refurbishment practices in Serbia, highlighting the problems of applying the standard improvement measures for energy saving on buildings of a specific era and style. The focus is on the brutalist buildings in Belgrade that are not protected as such, nor is their façade or project in general — even though they are considered to be examples of good practice by architects today. Form and geometry of these objects themselves arise many challenges in terms of thermal insulation of facade walls. The most problematic are cold bridges (parts of the primary concrete construction that are also seen on the exterior), which will bring the issue into the interior — by accelerating the phenomenon of condensation and dew points along the line of connection of two planes with different temperatures. The chosen subject of research is the object of Elementary school Ratko Mitrovic, New Belgrade (block 38), which is a brutalist building from the 1970s, designed by architect Petar Petrovic — that has not undergone any changes since its first day (can still be seen in its original state today). The specific school was chosen because it is also a subject of an ongoing project of energy efficient refurbishments for schools in Serbia — where the hidden flaws of using the standard improvement measures for energy saving can be calculated and the weaknesses of the project can be targeted — questioning whether these proposals are to be considered improvements of the existing state.
PB  - SGCE Editorial Office
T2  - International Journal of Smart Grid and Clean Energy
T1  - Hidden Flaws of Energy Efficient Refurbishment of Buildings in Brutalist Architectural Style
VL  - 12
IS  - 1
SP  - 1
EP  - 10
DO  - 10.12720/sgce.12.1.1-10
ER  - 

@article{
author = "Zisic, Tijana and Rajcic, Aleksandar and Vasovic, Dejan",
year = "2023",
abstract = "The paper presents energy efficient refurbishment practices in Serbia, highlighting the problems of applying the standard improvement measures for energy saving on buildings of a specific era and style. The focus is on the brutalist buildings in Belgrade that are not protected as such, nor is their façade or project in general — even though they are considered to be examples of good practice by architects today. Form and geometry of these objects themselves arise many challenges in terms of thermal insulation of facade walls. The most problematic are cold bridges (parts of the primary concrete construction that are also seen on the exterior), which will bring the issue into the interior — by accelerating the phenomenon of condensation and dew points along the line of connection of two planes with different temperatures. The chosen subject of research is the object of Elementary school Ratko Mitrovic, New Belgrade (block 38), which is a brutalist building from the 1970s, designed by architect Petar Petrovic — that has not undergone any changes since its first day (can still be seen in its original state today). The specific school was chosen because it is also a subject of an ongoing project of energy efficient refurbishments for schools in Serbia — where the hidden flaws of using the standard improvement measures for energy saving can be calculated and the weaknesses of the project can be targeted — questioning whether these proposals are to be considered improvements of the existing state.",
publisher = "SGCE Editorial Office",
journal = "International Journal of Smart Grid and Clean Energy",
title = "Hidden Flaws of Energy Efficient Refurbishment of Buildings in Brutalist Architectural Style",
volume = "12",
number = "1",
pages = "1-10",
doi = "10.12720/sgce.12.1.1-10"
}

Zisic, T., Rajcic, A.,& Vasovic, D.. (2023). Hidden Flaws of Energy Efficient Refurbishment of Buildings in Brutalist Architectural Style. in International Journal of Smart Grid and Clean Energy
SGCE Editorial Office., 12(1), 1-10.
https://doi.org/10.12720/sgce.12.1.1-10

Zisic T, Rajcic A, Vasovic D. Hidden Flaws of Energy Efficient Refurbishment of Buildings in Brutalist Architectural Style. in International Journal of Smart Grid and Clean Energy. 2023;12(1):1-10.
doi:10.12720/sgce.12.1.1-10 .

Zisic, Tijana, Rajcic, Aleksandar, Vasovic, Dejan, "Hidden Flaws of Energy Efficient Refurbishment of Buildings in Brutalist Architectural Style" in International Journal of Smart Grid and Clean Energy, 12, no. 1 (2023):1-10,
https://doi.org/10.12720/sgce.12.1.1-10 . .

TY  - JOUR
AU  - Vasovic, Dejan
AU  - Terzovic, Jefto
AU  - Kontic, Ana
AU  - Okrajnov-Bajic, Ruza
AU  - Sekularac, Nenad
PY  - 2021
UR  - https://raf.arh.bg.ac.rs/handle/123456789/1481
AB  - Protecting the built cultural heritage is one of the most important tasks in architectural
practice. The process of repair is time-consuming, weather-dependent, and sensitive to materials
applied. Introducing new materials in historic building repair in order to decrease the time needed
for repair, brings some risk in the preservation process. The most common material for masonry
repair is lime mortar. Adding cement to lime mortar can improve the mechanical properties of mortar and speed up the repair process. The high amount of cement may increase the strength, but decrease ductility and permeability of mortar, causing damages to protected buildings. An increase in strength with the smallest amounts of cement demands optimization of water content in the mixture. Tests were performed to investigate the influence of the water/binder (w/b = water/(lime + cement) ratio on mortar strength and water permeability. An air-entraining agent (AEG) was introduced to improve permeability. Results confirmed that adding small amounts of cement to lime (20% by weight) and decreasing of w/b ratio, improves the strength, with almost negligible influence on water permeability. The addition of very small amounts of AEG did not decrease the strength, nor the permeability.
PB  - Basel : MDPI
T2  - Crystals
T1  - The Influence of Water/Binder Ratio on the Mechanical Properties of Lime-Based Mortars with White Portland Cement
VL  - 11
IS  - 8
SP  - 958
DO  - 10.3390/cryst11080958
ER  - 

@article{
author = "Vasovic, Dejan and Terzovic, Jefto and Kontic, Ana and Okrajnov-Bajic, Ruza and Sekularac, Nenad",
year = "2021",
abstract = "Protecting the built cultural heritage is one of the most important tasks in architectural
practice. The process of repair is time-consuming, weather-dependent, and sensitive to materials
applied. Introducing new materials in historic building repair in order to decrease the time needed
for repair, brings some risk in the preservation process. The most common material for masonry
repair is lime mortar. Adding cement to lime mortar can improve the mechanical properties of mortar and speed up the repair process. The high amount of cement may increase the strength, but decrease ductility and permeability of mortar, causing damages to protected buildings. An increase in strength with the smallest amounts of cement demands optimization of water content in the mixture. Tests were performed to investigate the influence of the water/binder (w/b = water/(lime + cement) ratio on mortar strength and water permeability. An air-entraining agent (AEG) was introduced to improve permeability. Results confirmed that adding small amounts of cement to lime (20% by weight) and decreasing of w/b ratio, improves the strength, with almost negligible influence on water permeability. The addition of very small amounts of AEG did not decrease the strength, nor the permeability.",
publisher = "Basel : MDPI",
journal = "Crystals",
title = "The Influence of Water/Binder Ratio on the Mechanical Properties of Lime-Based Mortars with White Portland Cement",
volume = "11",
number = "8",
pages = "958",
doi = "10.3390/cryst11080958"
}

Vasovic, D., Terzovic, J., Kontic, A., Okrajnov-Bajic, R.,& Sekularac, N.. (2021). The Influence of Water/Binder Ratio on the Mechanical Properties of Lime-Based Mortars with White Portland Cement. in Crystals
Basel : MDPI., 11(8), 958.
https://doi.org/10.3390/cryst11080958

Vasovic D, Terzovic J, Kontic A, Okrajnov-Bajic R, Sekularac N. The Influence of Water/Binder Ratio on the Mechanical Properties of Lime-Based Mortars with White Portland Cement. in Crystals. 2021;11(8):958.
doi:10.3390/cryst11080958 .

Vasovic, Dejan, Terzovic, Jefto, Kontic, Ana, Okrajnov-Bajic, Ruza, Sekularac, Nenad, "The Influence of Water/Binder Ratio on the Mechanical Properties of Lime-Based Mortars with White Portland Cement" in Crystals, 11, no. 8 (2021):958,
https://doi.org/10.3390/cryst11080958 . .

TY  - JOUR
AU  - Lelović, Selimir
AU  - Vasović, Dejan
AU  - Stojić, Dragoslav
PY  - 2019
UR  - https://raf.arh.bg.ac.rs/handle/123456789/1101
AB  - This paper presents determination of the Mohr-Coulomb material parameters for concrete under indirect tensile testing, design of experiments and numerical
simulations. Experiments are designed to control input variables associated with inhomogeneous starting material, sample preparation and testing equipment. Statistical
analysis of the experimental data is applied in order to correlate material's deformational behaviour with change in cement content. Presented paper discusses a simple
method, based on experimental and theoretical framework, to determine two material parameters for concrete: cohesion (c) and angle of internal friction (φ) from indirect
tensile test. Cohesion is obtained from experimental results using elastic and plastic theory of concrete deformation. Prandtl's theory is applied to obtain the angle of internal
friction from measured bearing capacity and cohesion. Numerical analysis by finite-element method is used for verification of experimental results, employing step-by-step
integration procedure for solving the boundary value problem.
PB  - Faculty of Mechanical Engineering in Slavonski Brod
PB  - Faculty of Electrical Engineering in Osijek
PB  - Faculty of Civil Engineering in Osijek
T2  - Tehnički Vjesnik
T1  - Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test
VL  - 26
IS  - 2
SP  - 412
EP  - 419
UR  - https://hdl.handle.net/21.15107/rcub_raf_1101
ER  - 

@article{
author = "Lelović, Selimir and Vasović, Dejan and Stojić, Dragoslav",
year = "2019",
abstract = "This paper presents determination of the Mohr-Coulomb material parameters for concrete under indirect tensile testing, design of experiments and numerical
simulations. Experiments are designed to control input variables associated with inhomogeneous starting material, sample preparation and testing equipment. Statistical
analysis of the experimental data is applied in order to correlate material's deformational behaviour with change in cement content. Presented paper discusses a simple
method, based on experimental and theoretical framework, to determine two material parameters for concrete: cohesion (c) and angle of internal friction (φ) from indirect
tensile test. Cohesion is obtained from experimental results using elastic and plastic theory of concrete deformation. Prandtl's theory is applied to obtain the angle of internal
friction from measured bearing capacity and cohesion. Numerical analysis by finite-element method is used for verification of experimental results, employing step-by-step
integration procedure for solving the boundary value problem.",
publisher = "Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek",
journal = "Tehnički Vjesnik",
title = "Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test",
volume = "26",
number = "2",
pages = "412-419",
url = "https://hdl.handle.net/21.15107/rcub_raf_1101"
}

Lelović, S., Vasović, D.,& Stojić, D.. (2019). Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test. in Tehnički Vjesnik
Faculty of Mechanical Engineering in Slavonski Brod., 26(2), 412-419.
https://hdl.handle.net/21.15107/rcub_raf_1101

Lelović S, Vasović D, Stojić D. Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test. in Tehnički Vjesnik. 2019;26(2):412-419.
https://hdl.handle.net/21.15107/rcub_raf_1101 .

Lelović, Selimir, Vasović, Dejan, Stojić, Dragoslav, "Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test" in Tehnički Vjesnik, 26, no. 2 (2019):412-419,
https://hdl.handle.net/21.15107/rcub_raf_1101 .

TY  - JOUR
AU  - Lelović, Selimir
AU  - Stojić, Dragoslav
AU  - Vasović, Dejan
PY  - 2019
UR  - http://grafar.grf.bg.ac.rs/handle/123456789/1118
UR  - https://raf.arh.bg.ac.rs/handle/123456789/415
AB  - This paper presents determination of the Mohr-Coulomb material parameters for concrete under indirect tensile testing, design of experiments and numerical simulations. Experiments are designed to control input variables associated with inhomogeneous starting material, sample preparation and testing equipment. Statistical analysis of the experimental data is applied in order to correlate material's deformational behaviour with change in cement content. Presented paper discusses a simple method, based on experimental and theoretical framework, to determine two material parameters for concrete: cohesion (c) and angle of internal friction (φ) from indirect tensile test. Cohesion is obtained from experimental results using elastic and plastic theory of concrete deformation. Prandtl's theory is applied to obtain the angle of internal friction from measured bearing capacity and cohesion. Numerical analysis by finite-element method is used for verification of experimental results, employing step-by-step integration procedure for solving the boundary value problem.
T2  - Tehnički vjesnik
T1  - Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test
VL  - 26
IS  - 2
SP  - 412
EP  - 419
DO  - 10.17559/TV-20180612090311
ER  - 

@article{
author = "Lelović, Selimir and Stojić, Dragoslav and Vasović, Dejan",
year = "2019",
abstract = "This paper presents determination of the Mohr-Coulomb material parameters for concrete under indirect tensile testing, design of experiments and numerical simulations. Experiments are designed to control input variables associated with inhomogeneous starting material, sample preparation and testing equipment. Statistical analysis of the experimental data is applied in order to correlate material's deformational behaviour with change in cement content. Presented paper discusses a simple method, based on experimental and theoretical framework, to determine two material parameters for concrete: cohesion (c) and angle of internal friction (φ) from indirect tensile test. Cohesion is obtained from experimental results using elastic and plastic theory of concrete deformation. Prandtl's theory is applied to obtain the angle of internal friction from measured bearing capacity and cohesion. Numerical analysis by finite-element method is used for verification of experimental results, employing step-by-step integration procedure for solving the boundary value problem.",
journal = "Tehnički vjesnik",
title = "Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test",
volume = "26",
number = "2",
pages = "412-419",
doi = "10.17559/TV-20180612090311"
}

Lelović, S., Stojić, D.,& Vasović, D.. (2019). Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test. in Tehnički vjesnik, 26(2), 412-419.
https://doi.org/10.17559/TV-20180612090311

Lelović S, Stojić D, Vasović D. Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test. in Tehnički vjesnik. 2019;26(2):412-419.
doi:10.17559/TV-20180612090311 .

Lelović, Selimir, Stojić, Dragoslav, Vasović, Dejan, "Determination of the Mohr-Coulomb Material Parameters for Concrete under Indirect Tensile Test" in Tehnički vjesnik, 26, no. 2 (2019):412-419,
https://doi.org/10.17559/TV-20180612090311 . .

TY  - CONF
AU  - Ćuković Ignjatović, Nataša
AU  - Ignjatović, Dušan
AU  - Vasović, Dejan
PY  - 2016
UR  - https://raf.arh.bg.ac.rs/handle/123456789/502
AB  - Developing countries are facing numerous challenges in the process of providing adequate health
care to often deprived and diminished social groups. In countries and regions with poor road
infrastructure, this often means that the population outside major urban centres is even
physically incapable of getting some sort of health aid in a timely manner. Being a country made
up of a mainland territory and five islands in Gulf of Guinea, almost entirely covered by tropical
rainforest, Equatorial Guinea is a showcase of various obstructions in developing effective health
care system.
The sustainable primary, secondary and tertiary health care assumes good accessibility as well
as proper understanding of local conditions. The paper presents a model for sustainable health
care building – a local hospital capable of providing all basic types of health service while
retaining a high level of technical independence. The architectural design for a regional hospital
was developed aiming to maximize the use of natural ventilation, daylight and rainwater
management, leaving the operation block, laboratory and intensive care unit practically the only
parts of the structure that would need mechanical air conditioning. The layout was designed
having in mind local culture and customs, thus offering a possibility of strong integration with
local community, and the building technology was thought over to enable efficient and costeffective
construction and proper resilience for tropical rainforest environment. The result is a
structure providing for contemporary, high quality medical service, interpreting local climatic and
cultural contextual premises through modern architectural expression. Some design features
developed for regional hospital were also explored in somewhat different conditions – a major
clinical centre (in Malabo, the capital) and a local health centre with the basic services for the
most remote areas.
PB  - Belgrade : University of Belgrade - Faculty of Architecture
C3  - Conference Proceedings [Elektronski izvor] / 3rd international Academic Conference on Places and Technologies, [14-15.04.2016, Belgrade]
T1  - Sustainable model for regional hospitals in humid tropical climate
SP  - 621
EP  - 626
UR  - https://hdl.handle.net/21.15107/rcub_raf_502
ER  - 

@conference{
author = "Ćuković Ignjatović, Nataša and Ignjatović, Dušan and Vasović, Dejan",
year = "2016",
abstract = "Developing countries are facing numerous challenges in the process of providing adequate health
care to often deprived and diminished social groups. In countries and regions with poor road
infrastructure, this often means that the population outside major urban centres is even
physically incapable of getting some sort of health aid in a timely manner. Being a country made
up of a mainland territory and five islands in Gulf of Guinea, almost entirely covered by tropical
rainforest, Equatorial Guinea is a showcase of various obstructions in developing effective health
care system.
The sustainable primary, secondary and tertiary health care assumes good accessibility as well
as proper understanding of local conditions. The paper presents a model for sustainable health
care building – a local hospital capable of providing all basic types of health service while
retaining a high level of technical independence. The architectural design for a regional hospital
was developed aiming to maximize the use of natural ventilation, daylight and rainwater
management, leaving the operation block, laboratory and intensive care unit practically the only
parts of the structure that would need mechanical air conditioning. The layout was designed
having in mind local culture and customs, thus offering a possibility of strong integration with
local community, and the building technology was thought over to enable efficient and costeffective
construction and proper resilience for tropical rainforest environment. The result is a
structure providing for contemporary, high quality medical service, interpreting local climatic and
cultural contextual premises through modern architectural expression. Some design features
developed for regional hospital were also explored in somewhat different conditions – a major
clinical centre (in Malabo, the capital) and a local health centre with the basic services for the
most remote areas.",
publisher = "Belgrade : University of Belgrade - Faculty of Architecture",
journal = "Conference Proceedings [Elektronski izvor] / 3rd international Academic Conference on Places and Technologies, [14-15.04.2016, Belgrade]",
title = "Sustainable model for regional hospitals in humid tropical climate",
pages = "621-626",
url = "https://hdl.handle.net/21.15107/rcub_raf_502"
}

Ćuković Ignjatović, N., Ignjatović, D.,& Vasović, D.. (2016). Sustainable model for regional hospitals in humid tropical climate. in Conference Proceedings [Elektronski izvor] / 3rd international Academic Conference on Places and Technologies, [14-15.04.2016, Belgrade]
Belgrade : University of Belgrade - Faculty of Architecture., 621-626.
https://hdl.handle.net/21.15107/rcub_raf_502

Ćuković Ignjatović N, Ignjatović D, Vasović D. Sustainable model for regional hospitals in humid tropical climate. in Conference Proceedings [Elektronski izvor] / 3rd international Academic Conference on Places and Technologies, [14-15.04.2016, Belgrade]. 2016;:621-626.
https://hdl.handle.net/21.15107/rcub_raf_502 .

Ćuković Ignjatović, Nataša, Ignjatović, Dušan, Vasović, Dejan, "Sustainable model for regional hospitals in humid tropical climate" in Conference Proceedings [Elektronski izvor] / 3rd international Academic Conference on Places and Technologies, [14-15.04.2016, Belgrade] (2016):621-626,
https://hdl.handle.net/21.15107/rcub_raf_502 .

TY  - THES
AU  - Vasović, Dejan
PY  - 2016
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=3534
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:12245/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=48121103
UR  - http://nardus.mpn.gov.rs/123456789/6213
UR  - https://raf.arh.bg.ac.rs/handle/123456789/375
AB  - In the present dissertation analyses of the ground motion and air-blast overpressure induced by blasting, as well as their effects on neighbouring buildings (houses, households), in limestone quarries is given. Limestone is chosen as a representative rock unit for investigating the ground vibration because it is the most common rock type in Serbian quarries, and limestone is mostly used rock type for civil engineering purposes. Moreover, there have been many experimental investigations carried out on blast-induced vibrations in limestone. Peak particle velocity near neighbouring structures was measured during ordinary blasting operations in limestone quarries. The effects of blast-induced ground motion were evaluated by conventional predictors, in accordance with legal regulations and engineering practice. Their predictive power was estimated in relation to peak particle velocity. A new artificial neural network model for the prediction of blast impact on building was introduced with three input units (total charge, maximum charge per delay and distance from explosive charge to monitoring point), with one hidden layer and one output unit (peak particle velocity). Effects on existing architectural buildings were estimated by comparing peak particle velocities with values defined by existing vibration standards. In order to more precisely evaluate real effects blast-induced ground motion on neighbouring buildings, a numerical stress – strain analysis of structural elements was carried out. This procedure is a non-standard method in analysis of the impact of blasting on surrounding objects. Surrounding buildings were modelled with finite element method using academic and commercial software packages. Measured time recordings were used for the direct dynamics analysis. The obtained results indicate which elements are the most loaded and on which points damages can be expected to occur first. The results of calculations show that blasting performed in accordance with positive vibration standards cause far less stresses and strains than allowed thus avoiding damages on buildings...
AB  - У овој дисертацији су изучавани померање тла и натпритисак ваздушног удара који су проузроковани минирањем, као и њихови утицаји на околне објекте (куће, домаћинства), у површинским коповима кречњачког каменог агрегата. Кречњак је одабран као репрезентативна стена за испитивање вибрација тла, будући да је то најраспрострањенији тип стене у Србији и да се најчешће користи у грађевинске сврхе. Такође, на кречњаку је урађено много експерименталних истраживања потреса проузрокованих минирањем. Приликом извођења редовних радова на минирању у каменоломима кречњака мерене су брзине осциловања тла у близини околних објеката. Утицаји потреса изазаваних минирањем, у складу са постојећом законском регулативом и инжењерском праксом, процењени су коришћењем конвенционалних предиктора. Тачност (поузданост) предвиђања коришћењем конвенционалних предиктора процењена је у односу на забележену максималну брзину осциловања тла. Као резултат истраживања предложен је нови модел за процену утицаја коришћењем вештачких неуронских мрежа са три главне улазне јединице (укупно експлозивно пуњење, максимално пуњење по интервалу успорења паљења експлозива и растојање од места минирања до мерног места), са једним скривеним слојем и једним излазом (максималном брзином осциловања тла). Утицај на постојеће објекте процењен је поређењем максималних брзина осциловања са вредностима дефинисаним постојећим вибрационим стандардима. Ради детаљније процене стварних утицаја потреса изазваних минирањем на околне куће извршена је нумеричка анализа напрезања и деформација у елементима конструкције ових објеката. Овај поступак представља нестандардну методу у анализи утицаја од минирања на архитектонске објекте. Понашање околних објеката под дејством потреса од минирања моделовано је методом коначних елемената коришћењем академских и комерцијалних софтверских пакета. Регистровани временски записи искоришћени су за директну динамичку анализу објеката у околини места минирања. Резултати добијени овим поступком показују који су елементи најоптерећенији и на којим местима се могу очекивати појаве првих оштећења. Та места, као места појаве првих потенцијалних оштећења, морају бити предмет посебне пажње током извођења минирања. Резултати анализе околних објеката показали су да су напрезања и деформације од изведених минирања знатно мања од дозвољених, што је и очекивано за минирања изведена према важећим стандардима. Са циљем да се утврди утицај потреса од минирања на типске архитектонске објекте...
PB  - Универзитет у Београду, Архитектонски факултет
T2  - Универзитет у Београду
T1  - Modelling of response of architectural objects under the impact of blast induced vibrations in open pits
T1  - Моделовање понашања архитектонских објеката услед потреса од минирања на површинским коповима
UR  - https://hdl.handle.net/21.15107/rcub_nardus_6213
ER  - 

@phdthesis{
author = "Vasović, Dejan",
year = "2016",
abstract = "In the present dissertation analyses of the ground motion and air-blast overpressure induced by blasting, as well as their effects on neighbouring buildings (houses, households), in limestone quarries is given. Limestone is chosen as a representative rock unit for investigating the ground vibration because it is the most common rock type in Serbian quarries, and limestone is mostly used rock type for civil engineering purposes. Moreover, there have been many experimental investigations carried out on blast-induced vibrations in limestone. Peak particle velocity near neighbouring structures was measured during ordinary blasting operations in limestone quarries. The effects of blast-induced ground motion were evaluated by conventional predictors, in accordance with legal regulations and engineering practice. Their predictive power was estimated in relation to peak particle velocity. A new artificial neural network model for the prediction of blast impact on building was introduced with three input units (total charge, maximum charge per delay and distance from explosive charge to monitoring point), with one hidden layer and one output unit (peak particle velocity). Effects on existing architectural buildings were estimated by comparing peak particle velocities with values defined by existing vibration standards. In order to more precisely evaluate real effects blast-induced ground motion on neighbouring buildings, a numerical stress – strain analysis of structural elements was carried out. This procedure is a non-standard method in analysis of the impact of blasting on surrounding objects. Surrounding buildings were modelled with finite element method using academic and commercial software packages. Measured time recordings were used for the direct dynamics analysis. The obtained results indicate which elements are the most loaded and on which points damages can be expected to occur first. The results of calculations show that blasting performed in accordance with positive vibration standards cause far less stresses and strains than allowed thus avoiding damages on buildings..., У овој дисертацији су изучавани померање тла и натпритисак ваздушног удара који су проузроковани минирањем, као и њихови утицаји на околне објекте (куће, домаћинства), у површинским коповима кречњачког каменог агрегата. Кречњак је одабран као репрезентативна стена за испитивање вибрација тла, будући да је то најраспрострањенији тип стене у Србији и да се најчешће користи у грађевинске сврхе. Такође, на кречњаку је урађено много експерименталних истраживања потреса проузрокованих минирањем. Приликом извођења редовних радова на минирању у каменоломима кречњака мерене су брзине осциловања тла у близини околних објеката. Утицаји потреса изазаваних минирањем, у складу са постојећом законском регулативом и инжењерском праксом, процењени су коришћењем конвенционалних предиктора. Тачност (поузданост) предвиђања коришћењем конвенционалних предиктора процењена је у односу на забележену максималну брзину осциловања тла. Као резултат истраживања предложен је нови модел за процену утицаја коришћењем вештачких неуронских мрежа са три главне улазне јединице (укупно експлозивно пуњење, максимално пуњење по интервалу успорења паљења експлозива и растојање од места минирања до мерног места), са једним скривеним слојем и једним излазом (максималном брзином осциловања тла). Утицај на постојеће објекте процењен је поређењем максималних брзина осциловања са вредностима дефинисаним постојећим вибрационим стандардима. Ради детаљније процене стварних утицаја потреса изазваних минирањем на околне куће извршена је нумеричка анализа напрезања и деформација у елементима конструкције ових објеката. Овај поступак представља нестандардну методу у анализи утицаја од минирања на архитектонске објекте. Понашање околних објеката под дејством потреса од минирања моделовано је методом коначних елемената коришћењем академских и комерцијалних софтверских пакета. Регистровани временски записи искоришћени су за директну динамичку анализу објеката у околини места минирања. Резултати добијени овим поступком показују који су елементи најоптерећенији и на којим местима се могу очекивати појаве првих оштећења. Та места, као места појаве првих потенцијалних оштећења, морају бити предмет посебне пажње током извођења минирања. Резултати анализе околних објеката показали су да су напрезања и деформације од изведених минирања знатно мања од дозвољених, што је и очекивано за минирања изведена према важећим стандардима. Са циљем да се утврди утицај потреса од минирања на типске архитектонске објекте...",
publisher = "Универзитет у Београду, Архитектонски факултет",
journal = "Универзитет у Београду",
title = "Modelling of response of architectural objects under the impact of blast induced vibrations in open pits, Моделовање понашања архитектонских објеката услед потреса од минирања на површинским коповима",
url = "https://hdl.handle.net/21.15107/rcub_nardus_6213"
}

Vasović, D.. (2016). Modelling of response of architectural objects under the impact of blast induced vibrations in open pits. in Универзитет у Београду
Универзитет у Београду, Архитектонски факултет..
https://hdl.handle.net/21.15107/rcub_nardus_6213

Vasović D. Modelling of response of architectural objects under the impact of blast induced vibrations in open pits. in Универзитет у Београду. 2016;.
https://hdl.handle.net/21.15107/rcub_nardus_6213 .

Vasović, Dejan, "Modelling of response of architectural objects under the impact of blast induced vibrations in open pits" in Универзитет у Београду (2016),
https://hdl.handle.net/21.15107/rcub_nardus_6213 .

TY  - CONF
AU  - Vasović, Dejan
AU  - Ćuković Ignjatović, Nataša
AU  - Ignjatović, Dušan
PY  - 2015
UR  - https://raf.arh.bg.ac.rs/handle/123456789/661
AB  - The construction of the so-called "social infrastructure" (kindergartens, schools,
health centres, hospitals), which is the basis for a "public health" in a broader
sense, in many countries is led by the administration (state and municipal). The
quality of the built environment largely depends on the quality of financier, in this
case embodied in some kind of state/municipal authorities, committees and civil
servants. In this paper, an example of the application of up to date high-tech design
methods and technologies in the design and construction of public buildings is
presented. Belgrade public buildings designed and constructed in the period 2009
– 2013, is shown. The first five projects for construction of energy efficient
kindergartens (up to passive house standard) with the use of renewable energy
sources and realised through architectural competition, were considered as a
passing fad, but such a practice has become standard procedure for the design of
the other public buildings, and even the only option for the construction project of
1400 social apartments in Borča. The paper presents these projects, and, in
particular, highlights the necessary processes and procedures established to
ensure that these projects would be implemented.
PB  - Ljubljana : Faculty of Architecture
C3  - Keeping up with technologies to make healthy places : book of conference proceedings / [2nd International Academic Conference] Places and Technologies 2015, Nova Gorica, Slovenia
T1  - Municipality policy as key factor for the role of architecture and technology in public health
SP  - 248
EP  - 254
UR  - https://hdl.handle.net/21.15107/rcub_raf_661
ER  - 

@conference{
author = "Vasović, Dejan and Ćuković Ignjatović, Nataša and Ignjatović, Dušan",
year = "2015",
abstract = "The construction of the so-called "social infrastructure" (kindergartens, schools,
health centres, hospitals), which is the basis for a "public health" in a broader
sense, in many countries is led by the administration (state and municipal). The
quality of the built environment largely depends on the quality of financier, in this
case embodied in some kind of state/municipal authorities, committees and civil
servants. In this paper, an example of the application of up to date high-tech design
methods and technologies in the design and construction of public buildings is
presented. Belgrade public buildings designed and constructed in the period 2009
– 2013, is shown. The first five projects for construction of energy efficient
kindergartens (up to passive house standard) with the use of renewable energy
sources and realised through architectural competition, were considered as a
passing fad, but such a practice has become standard procedure for the design of
the other public buildings, and even the only option for the construction project of
1400 social apartments in Borča. The paper presents these projects, and, in
particular, highlights the necessary processes and procedures established to
ensure that these projects would be implemented.",
publisher = "Ljubljana : Faculty of Architecture",
journal = "Keeping up with technologies to make healthy places : book of conference proceedings / [2nd International Academic Conference] Places and Technologies 2015, Nova Gorica, Slovenia",
title = "Municipality policy as key factor for the role of architecture and technology in public health",
pages = "248-254",
url = "https://hdl.handle.net/21.15107/rcub_raf_661"
}

Vasović, D., Ćuković Ignjatović, N.,& Ignjatović, D.. (2015). Municipality policy as key factor for the role of architecture and technology in public health. in Keeping up with technologies to make healthy places : book of conference proceedings / [2nd International Academic Conference] Places and Technologies 2015, Nova Gorica, Slovenia
Ljubljana : Faculty of Architecture., 248-254.
https://hdl.handle.net/21.15107/rcub_raf_661

Vasović D, Ćuković Ignjatović N, Ignjatović D. Municipality policy as key factor for the role of architecture and technology in public health. in Keeping up with technologies to make healthy places : book of conference proceedings / [2nd International Academic Conference] Places and Technologies 2015, Nova Gorica, Slovenia. 2015;:248-254.
https://hdl.handle.net/21.15107/rcub_raf_661 .

Vasović, Dejan, Ćuković Ignjatović, Nataša, Ignjatović, Dušan, "Municipality policy as key factor for the role of architecture and technology in public health" in Keeping up with technologies to make healthy places : book of conference proceedings / [2nd International Academic Conference] Places and Technologies 2015, Nova Gorica, Slovenia (2015):248-254,
https://hdl.handle.net/21.15107/rcub_raf_661 .

TY  - JOUR
AU  - Kostić, Srđan
AU  - Vasović, Dejan
PY  - 2015
UR  - https://raf.arh.bg.ac.rs/handle/123456789/204
AB  - In the present paper, we propose a prediction model for concrete compressive strength using artificial neural networks. In experimental part of the research, 75 concrete samples with various w/c ratios were exposed to freezing and thawing, after which their compressive strength was determined at different age, viz. 7, 20 and 32 days. In computational phase of the research, different prediction models for concrete compressive strength were developed using artificial neural networks with w/c ratio, age and number of freeze/thaw cycles as three input nodes. We examined three-layer feed-forward back-propagation neural networks with 2, 6 and 9 hidden nodes using four different learning algorithms. The most accurate prediction models, with the highest coefficient of determination (R (2) > 0.87), and with all of the predicted data falling within the 95 % prediction interval, were obtained with six hidden nodes using Levenberg-Marquardt, scaled conjugate gradient and one-step secant algorithms, and with nine hidden nodes using Broyden-Fletcher-Goldfarb-Shannon algorithm. Further analysis showed that relative error between the predicted and experimental data increases up to acceptable a parts per thousand 15 %, which confirms that proposed ANN models are robust to the consistency of training and validation output data. Accuracy of the proposed models was further verified by low values of standard statistical errors. In the final phase of the research, individual effect of each input parameter was examined using the global sensitivity analysis, whose results indicated that w/c ratio has the strongest impact on concrete compressive strength.
PB  - Springer-Verlag London Ltd
T2  - Neural computing & applications
T1  - Prediction model for compressive strength of basic concrete mixture using artificial neural networks
VL  - 26
IS  - 5
SP  - 1005
EP  - 1024
DO  - 10.1007/s00521-014-1763-1
ER  - 

@article{
author = "Kostić, Srđan and Vasović, Dejan",
year = "2015",
abstract = "In the present paper, we propose a prediction model for concrete compressive strength using artificial neural networks. In experimental part of the research, 75 concrete samples with various w/c ratios were exposed to freezing and thawing, after which their compressive strength was determined at different age, viz. 7, 20 and 32 days. In computational phase of the research, different prediction models for concrete compressive strength were developed using artificial neural networks with w/c ratio, age and number of freeze/thaw cycles as three input nodes. We examined three-layer feed-forward back-propagation neural networks with 2, 6 and 9 hidden nodes using four different learning algorithms. The most accurate prediction models, with the highest coefficient of determination (R (2) > 0.87), and with all of the predicted data falling within the 95 % prediction interval, were obtained with six hidden nodes using Levenberg-Marquardt, scaled conjugate gradient and one-step secant algorithms, and with nine hidden nodes using Broyden-Fletcher-Goldfarb-Shannon algorithm. Further analysis showed that relative error between the predicted and experimental data increases up to acceptable a parts per thousand 15 %, which confirms that proposed ANN models are robust to the consistency of training and validation output data. Accuracy of the proposed models was further verified by low values of standard statistical errors. In the final phase of the research, individual effect of each input parameter was examined using the global sensitivity analysis, whose results indicated that w/c ratio has the strongest impact on concrete compressive strength.",
publisher = "Springer-Verlag London Ltd",
journal = "Neural computing & applications",
title = "Prediction model for compressive strength of basic concrete mixture using artificial neural networks",
volume = "26",
number = "5",
pages = "1005-1024",
doi = "10.1007/s00521-014-1763-1"
}

Kostić, S.,& Vasović, D.. (2015). Prediction model for compressive strength of basic concrete mixture using artificial neural networks. in Neural computing & applications
Springer-Verlag London Ltd., 26(5), 1005-1024.
https://doi.org/10.1007/s00521-014-1763-1

Kostić S, Vasović D. Prediction model for compressive strength of basic concrete mixture using artificial neural networks. in Neural computing & applications. 2015;26(5):1005-1024.
doi:10.1007/s00521-014-1763-1 .

Kostić, Srđan, Vasović, Dejan, "Prediction model for compressive strength of basic concrete mixture using artificial neural networks" in Neural computing & applications, 26, no. 5 (2015):1005-1024,
https://doi.org/10.1007/s00521-014-1763-1 . .

TY  - JOUR
AU  - Kostić, Srđan
AU  - Vasović, Dejan
PY  - 2015
UR  - https://raf.arh.bg.ac.rs/handle/123456789/184
AB  - In present paper, concrete compressive strength is evaluated using back propagation feed-forward artificial neural network. Training of neural network is performed using Levenberg-Marquardt learning algorithm for four architectures of artificial neural networks, one, three, eight and twelve nodes in a hidden layer in order to avoid the occurrence of overfitting. Training, validation and testing of neural network is conducted for 75 concrete samples with distinct w/c ratio and amount of superplasticizer of melamine type. These specimens were exposed to different number of freeze/thaw cycles and their compressive strength was determined after 7, 20 and 32 days. The obtained results indicate that neural network with one hidden layer and twelve hidden nodes gives reasonable prediction accuracy in comparison to experimental results (R=0.965, MSE=0.005). These results of the performed analysis are further confirmed by calculating the standard statistical errors: the chosen architecture of neural network shows the smallest value of mean absolute percentage error (MAPE=, variance absolute relative error (VARE) and median absolute error (MEDAE), and the highest value of variance accounted for (VAF).
AB  - U radu se daje procena čvrstoće betona pri pritisku, primenom veštačkih neuronskih mreža s prostiranjem signala unapred i propagacijom greške unazad. Obučavanje mreže sprovodi se korišćenjem Levenberg-Markart algoritma obučavanja za četiri različite arhitekture neuronskih mreža, s jednom jedinicom, tri jedinice, te osam i dvanaest jedinica u skrivenom sloju, radi odbacivanja efekta ,,pretreniranja'. Treniranje, validacija i testiranje neuronskih mreža izvodi se na osnovu rezultata eksperimentalnog ispitivanja čvrstoće pri pritisku na 75 uzoraka betona, s različitim vodocementnim faktorom i količinom superplastifikatora tipa melamina. Ispitivani uzorci betona izlagani su različitim ciklusima zamrzavanja/ otkravljivanja, a njihova čvrstoća pri pritisku određivana je nakon 7, 20 i 32 dana. Dobijeni rezultati ukazuju na to da neuronska mreža s dvanaest jedinica u skrivenom sloju daje ocenu čvrstoće zadovoljavajuće tačnosti u poređenju sa eksperimentalno dobijenim podacima (R≈0,97, MSE=0,005). Rezultati izvedene analize dodatno su potvrđeni sračunavanjem vrednosti standardnih statističkih grešaka: najmanjom vrednošću srednje apsolutne greške (MAPE), varijanse relativne vrednosti apsolutne greške (VARE) i medijane (MEDAE), kao i najvećom vrednošću sračunate varijanse (VAF) za izabranu arhitekturu neuronske mreže.
PB  - Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
T2  - Građevinski materijali i konstrukcije
T1  - Estimation of concrete compressive strength using artificial neural network
T1  - Procena čvrstoće betona pri pritisku, korišćenjem veštačkih neuronskih mreža
VL  - 58
IS  - 1
SP  - 3
EP  - 16
DO  - 10.5937/grmk1501003K
ER  - 

@article{
author = "Kostić, Srđan and Vasović, Dejan",
year = "2015",
abstract = "In present paper, concrete compressive strength is evaluated using back propagation feed-forward artificial neural network. Training of neural network is performed using Levenberg-Marquardt learning algorithm for four architectures of artificial neural networks, one, three, eight and twelve nodes in a hidden layer in order to avoid the occurrence of overfitting. Training, validation and testing of neural network is conducted for 75 concrete samples with distinct w/c ratio and amount of superplasticizer of melamine type. These specimens were exposed to different number of freeze/thaw cycles and their compressive strength was determined after 7, 20 and 32 days. The obtained results indicate that neural network with one hidden layer and twelve hidden nodes gives reasonable prediction accuracy in comparison to experimental results (R=0.965, MSE=0.005). These results of the performed analysis are further confirmed by calculating the standard statistical errors: the chosen architecture of neural network shows the smallest value of mean absolute percentage error (MAPE=, variance absolute relative error (VARE) and median absolute error (MEDAE), and the highest value of variance accounted for (VAF)., U radu se daje procena čvrstoće betona pri pritisku, primenom veštačkih neuronskih mreža s prostiranjem signala unapred i propagacijom greške unazad. Obučavanje mreže sprovodi se korišćenjem Levenberg-Markart algoritma obučavanja za četiri različite arhitekture neuronskih mreža, s jednom jedinicom, tri jedinice, te osam i dvanaest jedinica u skrivenom sloju, radi odbacivanja efekta ,,pretreniranja'. Treniranje, validacija i testiranje neuronskih mreža izvodi se na osnovu rezultata eksperimentalnog ispitivanja čvrstoće pri pritisku na 75 uzoraka betona, s različitim vodocementnim faktorom i količinom superplastifikatora tipa melamina. Ispitivani uzorci betona izlagani su različitim ciklusima zamrzavanja/ otkravljivanja, a njihova čvrstoća pri pritisku određivana je nakon 7, 20 i 32 dana. Dobijeni rezultati ukazuju na to da neuronska mreža s dvanaest jedinica u skrivenom sloju daje ocenu čvrstoće zadovoljavajuće tačnosti u poređenju sa eksperimentalno dobijenim podacima (R≈0,97, MSE=0,005). Rezultati izvedene analize dodatno su potvrđeni sračunavanjem vrednosti standardnih statističkih grešaka: najmanjom vrednošću srednje apsolutne greške (MAPE), varijanse relativne vrednosti apsolutne greške (VARE) i medijane (MEDAE), kao i najvećom vrednošću sračunate varijanse (VAF) za izabranu arhitekturu neuronske mreže.",
publisher = "Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd",
journal = "Građevinski materijali i konstrukcije",
title = "Estimation of concrete compressive strength using artificial neural network, Procena čvrstoće betona pri pritisku, korišćenjem veštačkih neuronskih mreža",
volume = "58",
number = "1",
pages = "3-16",
doi = "10.5937/grmk1501003K"
}

Kostić, S.,& Vasović, D.. (2015). Estimation of concrete compressive strength using artificial neural network. in Građevinski materijali i konstrukcije
Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd., 58(1), 3-16.
https://doi.org/10.5937/grmk1501003K

Kostić S, Vasović D. Estimation of concrete compressive strength using artificial neural network. in Građevinski materijali i konstrukcije. 2015;58(1):3-16.
doi:10.5937/grmk1501003K .

Kostić, Srđan, Vasović, Dejan, "Estimation of concrete compressive strength using artificial neural network" in Građevinski materijali i konstrukcije, 58, no. 1 (2015):3-16,
https://doi.org/10.5937/grmk1501003K . .

TY  - JOUR
AU  - Kostić, Srđan
AU  - Vasović, Dejan
AU  - Okrajnov-Bajić, Ruža
PY  - 2014
UR  - https://raf.arh.bg.ac.rs/handle/123456789/169
AB  - A new type of calcium-nitrate and urea-based chemical admixture is proposed, in order to maintain the compressive strength of fresh concrete exposed to very low temperatures (below to - 250C), including a sudden transition to positive temperatures at an early age. The applied admixture has no negative effect on compressive strength of specimens cured in water at 200C. When it is cured under three different frost regimes, concrete specimens with admixture show over three times higher compressive strength, in comparison to specimens without admixture. The implications of such improved concrete composition are discussed in reference to the tunnel lining design.
AB  - U radu se predlaže novi tip hemijskog dodatka betonu na bazi kalcijum-nitrata i uree, sa ciljem održavanja čvrstoće na pritisak svežeg betona izloženog vrlo niskim temperaturama (do -250C), uključujući i uticaj iznenadnih velikih temperaturnih amplituda (prelaze od negativnih ka pozitivnim temperaturama). Primenjeni dodatak ne utiče nepovoljno na čvrstoću na pritisak uzoraka betona negovanih u izotermalnim uslovima na temperaturi od 200C. Kada se svež beton izloži uticaju različitih režima mraza, uzorci sa dodatkom pokazuju gotovo tri puta veću pritisnu čvrstoću u poređenju sa uzorcima bez dodatka. Primena betona sa predloženim aditivom u praksi razmatra se u odnosu na postojanost i stabilnost tunelske obloge sa prskanim betonom.
PB  - Institut za rudarstvo i metalurgiju, Bor
T2  - Mining and Metallurgy Engineering Bor
T1  - New fresh concrete chemical admixture for tunnel lining design in the extreme winter conditions
T1  - Novi hemijski dodatak svežem betonu za izvođenje tunelske obloge u ekstremnim zimskim uslovima
IS  - 2
SP  - 13
EP  - 32
DO  - 10.5937/mmeb1402013k
ER  - 

@article{
author = "Kostić, Srđan and Vasović, Dejan and Okrajnov-Bajić, Ruža",
year = "2014",
abstract = "A new type of calcium-nitrate and urea-based chemical admixture is proposed, in order to maintain the compressive strength of fresh concrete exposed to very low temperatures (below to - 250C), including a sudden transition to positive temperatures at an early age. The applied admixture has no negative effect on compressive strength of specimens cured in water at 200C. When it is cured under three different frost regimes, concrete specimens with admixture show over three times higher compressive strength, in comparison to specimens without admixture. The implications of such improved concrete composition are discussed in reference to the tunnel lining design., U radu se predlaže novi tip hemijskog dodatka betonu na bazi kalcijum-nitrata i uree, sa ciljem održavanja čvrstoće na pritisak svežeg betona izloženog vrlo niskim temperaturama (do -250C), uključujući i uticaj iznenadnih velikih temperaturnih amplituda (prelaze od negativnih ka pozitivnim temperaturama). Primenjeni dodatak ne utiče nepovoljno na čvrstoću na pritisak uzoraka betona negovanih u izotermalnim uslovima na temperaturi od 200C. Kada se svež beton izloži uticaju različitih režima mraza, uzorci sa dodatkom pokazuju gotovo tri puta veću pritisnu čvrstoću u poređenju sa uzorcima bez dodatka. Primena betona sa predloženim aditivom u praksi razmatra se u odnosu na postojanost i stabilnost tunelske obloge sa prskanim betonom.",
publisher = "Institut za rudarstvo i metalurgiju, Bor",
journal = "Mining and Metallurgy Engineering Bor",
title = "New fresh concrete chemical admixture for tunnel lining design in the extreme winter conditions, Novi hemijski dodatak svežem betonu za izvođenje tunelske obloge u ekstremnim zimskim uslovima",
number = "2",
pages = "13-32",
doi = "10.5937/mmeb1402013k"
}

Kostić, S., Vasović, D.,& Okrajnov-Bajić, R.. (2014). New fresh concrete chemical admixture for tunnel lining design in the extreme winter conditions. in Mining and Metallurgy Engineering Bor
Institut za rudarstvo i metalurgiju, Bor.(2), 13-32.
https://doi.org/10.5937/mmeb1402013k

Kostić S, Vasović D, Okrajnov-Bajić R. New fresh concrete chemical admixture for tunnel lining design in the extreme winter conditions. in Mining and Metallurgy Engineering Bor. 2014;(2):13-32.
doi:10.5937/mmeb1402013k .

Kostić, Srđan, Vasović, Dejan, Okrajnov-Bajić, Ruža, "New fresh concrete chemical admixture for tunnel lining design in the extreme winter conditions" in Mining and Metallurgy Engineering Bor, no. 2 (2014):13-32,
https://doi.org/10.5937/mmeb1402013k . .

TY  - JOUR
AU  - Vasović, Dejan
AU  - Kostić, Srđan
AU  - Ravilić, Marina
AU  - Trajković, Slobodan
PY  - 2014
UR  - https://raf.arh.bg.ac.rs/handle/123456789/155
AB  - In present paper, the blast-induced ground motion and its effect on the neighboring structures are analyzed at the limestone quarry "Drenovac'' in central part of Serbia. Ground motion is examined by means of existing conventional predictors, with scaled distance as a main influential parameter, which gave satisfying prediction accuracy (R > 0.8), except in the case of Ambraseys-Hendron predictor. In the next step of the analysis, a feedforward three-layer back-propagation neural network is developed, with three input units (total charge, maximum charge per delay and distance from explosive charge to monitoring point) and only one output unit (peak particle velocity). The network is tested for the cases with different number of hidden nodes. The obtained results indicate that the model with six hidden nodes gives reasonable predictive precision (R approximate to 0.9), but with much lower values of mean-squared error in comparison to conventional predictors. In order to predict the influence level to the neighboring buildings, recorded peak particle velocities and frequency values were evaluated according to United States Bureau of Mines, USSR standard, German DIN4150, Australian standard, Indian DMGS circular 7 and Chinese safety regulations for blasting. Using the best conventional predictor, the relationship between the allowable amount of explosive and distance from explosive charge is determined for every vibration standard. Furthermore, the effect of air-blast overpressure is analyzed according to domestic regulations, with construction of a blasting chart for the permissible amount of explosive as a function of distance, for the allowable value of air-blast overpressure (200 Pa). The performed analysis indicates only small number of recordings above the upper allowable limit according to DIN4150 and DMGS standard, while, for all other vibration codes the registered values of ground velocity are within the permissible limits. As for the air-blast overpressure, no damage is expected to occur.
PB  - Springer Verlag
T2  - Environmental earth sciences
T1  - Environmental impact of blasting at Drenovac limestone quarry (Serbia)
VL  - 72
IS  - 10
SP  - 3915
EP  - 3928
DO  - 10.1007/s12665-014-3280-z
ER  - 

@article{
author = "Vasović, Dejan and Kostić, Srđan and Ravilić, Marina and Trajković, Slobodan",
year = "2014",
abstract = "In present paper, the blast-induced ground motion and its effect on the neighboring structures are analyzed at the limestone quarry "Drenovac'' in central part of Serbia. Ground motion is examined by means of existing conventional predictors, with scaled distance as a main influential parameter, which gave satisfying prediction accuracy (R > 0.8), except in the case of Ambraseys-Hendron predictor. In the next step of the analysis, a feedforward three-layer back-propagation neural network is developed, with three input units (total charge, maximum charge per delay and distance from explosive charge to monitoring point) and only one output unit (peak particle velocity). The network is tested for the cases with different number of hidden nodes. The obtained results indicate that the model with six hidden nodes gives reasonable predictive precision (R approximate to 0.9), but with much lower values of mean-squared error in comparison to conventional predictors. In order to predict the influence level to the neighboring buildings, recorded peak particle velocities and frequency values were evaluated according to United States Bureau of Mines, USSR standard, German DIN4150, Australian standard, Indian DMGS circular 7 and Chinese safety regulations for blasting. Using the best conventional predictor, the relationship between the allowable amount of explosive and distance from explosive charge is determined for every vibration standard. Furthermore, the effect of air-blast overpressure is analyzed according to domestic regulations, with construction of a blasting chart for the permissible amount of explosive as a function of distance, for the allowable value of air-blast overpressure (200 Pa). The performed analysis indicates only small number of recordings above the upper allowable limit according to DIN4150 and DMGS standard, while, for all other vibration codes the registered values of ground velocity are within the permissible limits. As for the air-blast overpressure, no damage is expected to occur.",
publisher = "Springer Verlag",
journal = "Environmental earth sciences",
title = "Environmental impact of blasting at Drenovac limestone quarry (Serbia)",
volume = "72",
number = "10",
pages = "3915-3928",
doi = "10.1007/s12665-014-3280-z"
}

Vasović, D., Kostić, S., Ravilić, M.,& Trajković, S.. (2014). Environmental impact of blasting at Drenovac limestone quarry (Serbia). in Environmental earth sciences
Springer Verlag., 72(10), 3915-3928.
https://doi.org/10.1007/s12665-014-3280-z

Vasović D, Kostić S, Ravilić M, Trajković S. Environmental impact of blasting at Drenovac limestone quarry (Serbia). in Environmental earth sciences. 2014;72(10):3915-3928.
doi:10.1007/s12665-014-3280-z .

Vasović, Dejan, Kostić, Srđan, Ravilić, Marina, Trajković, Slobodan, "Environmental impact of blasting at Drenovac limestone quarry (Serbia)" in Environmental earth sciences, 72, no. 10 (2014):3915-3928,
https://doi.org/10.1007/s12665-014-3280-z . .

TY  - JOUR
AU  - Okrajnov-Bajić, Ruža
AU  - Vasović, Dejan
PY  - 2009
UR  - https://raf.arh.bg.ac.rs/handle/123456789/62
AB  - In majority of the most modern architectural designs realized in the past 10-20 years, concrete having features in fresh and hardened state as well as making, placing and curing techniques that are defined in detail was used. Quite frequently concrete which was self-compacting in fresh state was used. In order to get acquainted with this material and with possibilities of its application this paper presents various buildings in which it was used. The definition of self-compacting concrete is given and advantages of its application are underlined. Next, features of fresh SCC, test methods are described in detail and classifications especially defined for this material are proposed. .
PB  - Institut za arhitekturu i urbanizam Srbije, Beograd
T2  - Spatium
T1  - Self-compacting concrete and its application in contemporary architectural practice
IS  - 20
SP  - 28
EP  - 34
DO  - 10.2298/SPAT0920028O
ER  - 

@article{
author = "Okrajnov-Bajić, Ruža and Vasović, Dejan",
year = "2009",
abstract = "In majority of the most modern architectural designs realized in the past 10-20 years, concrete having features in fresh and hardened state as well as making, placing and curing techniques that are defined in detail was used. Quite frequently concrete which was self-compacting in fresh state was used. In order to get acquainted with this material and with possibilities of its application this paper presents various buildings in which it was used. The definition of self-compacting concrete is given and advantages of its application are underlined. Next, features of fresh SCC, test methods are described in detail and classifications especially defined for this material are proposed. .",
publisher = "Institut za arhitekturu i urbanizam Srbije, Beograd",
journal = "Spatium",
title = "Self-compacting concrete and its application in contemporary architectural practice",
number = "20",
pages = "28-34",
doi = "10.2298/SPAT0920028O"
}

Okrajnov-Bajić, R.,& Vasović, D.. (2009). Self-compacting concrete and its application in contemporary architectural practice. in Spatium
Institut za arhitekturu i urbanizam Srbije, Beograd.(20), 28-34.
https://doi.org/10.2298/SPAT0920028O

Okrajnov-Bajić R, Vasović D. Self-compacting concrete and its application in contemporary architectural practice. in Spatium. 2009;(20):28-34.
doi:10.2298/SPAT0920028O .

Okrajnov-Bajić, Ruža, Vasović, Dejan, "Self-compacting concrete and its application in contemporary architectural practice" in Spatium, no. 20 (2009):28-34,
https://doi.org/10.2298/SPAT0920028O . .

TY  - JOUR
AU  - Vasović, Dejan
AU  - Folić, Radomir J.
AU  - Vasović, Tomislav
PY  - 2008
UR  - https://raf.arh.bg.ac.rs/handle/123456789/45
AB  - During the winter time construction of the concrete structures, it is not uncommon to expect occasional short periods of the cold weather with temperatures below 0°C, which can last for few days, when freezing of the water in the fresh concrete might permanently destruct the newly formed cement matrix. This paper presents the results of an investigation of new type of chemical admixture which protect fresh concrete from the frost during very low temperatures (up to - 50°C) and enables continuation of the concrete hardening process when outside temperature becomes favorable. The testing included the admixture's influence on fresh concrete mixture and on the hardened concrete, with and without low temperatures influence. The concrete specimens were cured in the water at the 20°C temperature, and the results showed that the tested admixture caused the increase of the compression strength of more than 10% comparing to one of the reference specimen. In order to test the admixture influence, three cases of the potential low temperatures were examined. In thesis simulations, in order to establish the limits of the admiture's influence, fresh concrete mixture was exposed to the temperatures, where the lowest was -25°C. All three cases showed better behavior of the fresh concrete mixture, and also displayed much higher compression strength (for more than 100% higher, and for some regimes, for 200% higher). The specimens exposed to the extreme regime (the third one) were also tested for the water absorption and release, in order to establish the degree of destruction caused by frost and low temperatures during concrete hardening. These tests also showed that the specimens with the admixtures had lower water absorption, i.e. preserved structure of the concrete.
AB  - Prilikom izvođenja betonskih konstrukcija na licu mesta u zimskom periodu nisu retki slučajevi kada se može očekivati kratkotrajno zahlađenje od nekoliko dana sa temperaturama ispod nule koje mogu dovesti do zaleđivanja vode u svežem betonu i stvaranja leda koji trajno oštećuje strukturu tek formiranog cementnog kamena. U radu su prikazani rezultati ispitivanja uticaja novog hemijskog dodatka koji sprečava formiranja leda pri izuzetno niskim temperaturama (do -25 °C) u svežem betonu i omogućuje da se proces očvršćavanja nastavi čim to porast spoljne temperature dozvoli. Ispitivano je dejstvo dodatka na svež i očvrsli beton, bez i sa uticajem niskih temperatura. Prikazani rezultati na uzorcima koji su negovani u vodi temperature 20 °C pokazuju da ispitivani dodatak čak povećava čvrstoću na pritisak očvrslog betona u odnosu na etalon i za više od 10%. Sa ciljem da se ispita dejstvo dodatka u slučaju iznenadnih niskih temperatura simulirane su tri potencijalno realne situacije niskih temperatura. Radi utvrđivanja granica dejstva dodatka svež beton je, kroz ove simulacije, izlagan temperaturama i do -25 °C. U sva tri slučaja beton sa dodacima pokazao je znatno bolje ponašanje i postigao je znatno veće čvrstoće (za preko 100%, a za pojedine režime i za preko 200%). Opitna tela koja su prošla najteži termički režim (3. režim) ispitana su i na upijanje i otpuštanje vode, da bi se utvrdila mera oštećenja strukture usled dejstva mraza i niskih temperatura u periodu očvršćavanja svežeg betona. I ovde su uzorci sa dodatkom pokazali znatno manje upijanje vode, tj. očuvanu strukturu očvrslog betona.
PB  - Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
T2  - Materijali i konstrukcije
T1  - Antifreeze water additives applied to fresh concrete in winter conditions
T1  - Primena hemijskog dodatka za sprečavanje zaleđivanja vode u svežem betonu pri betoniranju u zimskim uslovima
VL  - 51
IS  - 3
SP  - 24
EP  - 29
UR  - https://hdl.handle.net/21.15107/rcub_raf_45
ER  - 

@article{
author = "Vasović, Dejan and Folić, Radomir J. and Vasović, Tomislav",
year = "2008",
abstract = "During the winter time construction of the concrete structures, it is not uncommon to expect occasional short periods of the cold weather with temperatures below 0°C, which can last for few days, when freezing of the water in the fresh concrete might permanently destruct the newly formed cement matrix. This paper presents the results of an investigation of new type of chemical admixture which protect fresh concrete from the frost during very low temperatures (up to - 50°C) and enables continuation of the concrete hardening process when outside temperature becomes favorable. The testing included the admixture's influence on fresh concrete mixture and on the hardened concrete, with and without low temperatures influence. The concrete specimens were cured in the water at the 20°C temperature, and the results showed that the tested admixture caused the increase of the compression strength of more than 10% comparing to one of the reference specimen. In order to test the admixture influence, three cases of the potential low temperatures were examined. In thesis simulations, in order to establish the limits of the admiture's influence, fresh concrete mixture was exposed to the temperatures, where the lowest was -25°C. All three cases showed better behavior of the fresh concrete mixture, and also displayed much higher compression strength (for more than 100% higher, and for some regimes, for 200% higher). The specimens exposed to the extreme regime (the third one) were also tested for the water absorption and release, in order to establish the degree of destruction caused by frost and low temperatures during concrete hardening. These tests also showed that the specimens with the admixtures had lower water absorption, i.e. preserved structure of the concrete., Prilikom izvođenja betonskih konstrukcija na licu mesta u zimskom periodu nisu retki slučajevi kada se može očekivati kratkotrajno zahlađenje od nekoliko dana sa temperaturama ispod nule koje mogu dovesti do zaleđivanja vode u svežem betonu i stvaranja leda koji trajno oštećuje strukturu tek formiranog cementnog kamena. U radu su prikazani rezultati ispitivanja uticaja novog hemijskog dodatka koji sprečava formiranja leda pri izuzetno niskim temperaturama (do -25 °C) u svežem betonu i omogućuje da se proces očvršćavanja nastavi čim to porast spoljne temperature dozvoli. Ispitivano je dejstvo dodatka na svež i očvrsli beton, bez i sa uticajem niskih temperatura. Prikazani rezultati na uzorcima koji su negovani u vodi temperature 20 °C pokazuju da ispitivani dodatak čak povećava čvrstoću na pritisak očvrslog betona u odnosu na etalon i za više od 10%. Sa ciljem da se ispita dejstvo dodatka u slučaju iznenadnih niskih temperatura simulirane su tri potencijalno realne situacije niskih temperatura. Radi utvrđivanja granica dejstva dodatka svež beton je, kroz ove simulacije, izlagan temperaturama i do -25 °C. U sva tri slučaja beton sa dodacima pokazao je znatno bolje ponašanje i postigao je znatno veće čvrstoće (za preko 100%, a za pojedine režime i za preko 200%). Opitna tela koja su prošla najteži termički režim (3. režim) ispitana su i na upijanje i otpuštanje vode, da bi se utvrdila mera oštećenja strukture usled dejstva mraza i niskih temperatura u periodu očvršćavanja svežeg betona. I ovde su uzorci sa dodatkom pokazali znatno manje upijanje vode, tj. očuvanu strukturu očvrslog betona.",
publisher = "Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd",
journal = "Materijali i konstrukcije",
title = "Antifreeze water additives applied to fresh concrete in winter conditions, Primena hemijskog dodatka za sprečavanje zaleđivanja vode u svežem betonu pri betoniranju u zimskim uslovima",
volume = "51",
number = "3",
pages = "24-29",
url = "https://hdl.handle.net/21.15107/rcub_raf_45"
}

Vasović, D., Folić, R. J.,& Vasović, T.. (2008). Antifreeze water additives applied to fresh concrete in winter conditions. in Materijali i konstrukcije
Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd., 51(3), 24-29.
https://hdl.handle.net/21.15107/rcub_raf_45

Vasović D, Folić RJ, Vasović T. Antifreeze water additives applied to fresh concrete in winter conditions. in Materijali i konstrukcije. 2008;51(3):24-29.
https://hdl.handle.net/21.15107/rcub_raf_45 .

Vasović, Dejan, Folić, Radomir J., Vasović, Tomislav, "Antifreeze water additives applied to fresh concrete in winter conditions" in Materijali i konstrukcije, 51, no. 3 (2008):24-29,
https://hdl.handle.net/21.15107/rcub_raf_45 .