TY  - JOUR
AU  - Stojmenović, Marija
AU  - Gulicovski, Jelena
AU  - Nišić, Neda
AU  - Ristić, Nenad
AU  - Liu, Shanke
AU  - Loredo, Jorge
AU  - Kragović, Milan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12916
AB  - This research presented, for the first time, the results of the successful application of the waste press sludges, WSLP (plant for lacquer and paint) and WSEP (powdery enamel plant), from a wastewater treatment plant generated during heating device production in the construction industry. The results of WSEP characterization and its influence on cement paste, mortar, and concrete properties showed that this material could be used as a cement replacement (with a maximum replacement amount of 20%) in producing mortar and concrete. Although waste WSLP sludge does not possess pozzolanic properties and does not meet the criteria prescribed by the standards for application in mortar and concrete due to its chemical inertness and fineness, as well as its extended setting time, it can be used as a replacement for stone filler or other powdered mineral admixture in the production of self-compacting concrete (SCC) in amounts up to 100%, with a maximum quantity of up to 100 kg/m3. The obtained results indicate that with the appropriate conversion, waste sludges, despite representing hazardous waste, can be used as safe products in the construction industry; i.e., the waste material can become a useful and valuable raw material by applying (respecting) all of the principles of the green economy.
T2  - Materials
T1  - Sustainable Application of Waste Sludges from the Wastewater Treatment Plant Generated during the Production of Heating Devices in the Construction Industry
VL  - 17
IS  - 5
SP  - 1089
DO  - 10.3390/ma17051089
ER  - 

@article{
author = "Stojmenović, Marija and Gulicovski, Jelena and Nišić, Neda and Ristić, Nenad and Liu, Shanke and Loredo, Jorge and Kragović, Milan",
year = "2024",
abstract = "This research presented, for the first time, the results of the successful application of the waste press sludges, WSLP (plant for lacquer and paint) and WSEP (powdery enamel plant), from a wastewater treatment plant generated during heating device production in the construction industry. The results of WSEP characterization and its influence on cement paste, mortar, and concrete properties showed that this material could be used as a cement replacement (with a maximum replacement amount of 20%) in producing mortar and concrete. Although waste WSLP sludge does not possess pozzolanic properties and does not meet the criteria prescribed by the standards for application in mortar and concrete due to its chemical inertness and fineness, as well as its extended setting time, it can be used as a replacement for stone filler or other powdered mineral admixture in the production of self-compacting concrete (SCC) in amounts up to 100%, with a maximum quantity of up to 100 kg/m3. The obtained results indicate that with the appropriate conversion, waste sludges, despite representing hazardous waste, can be used as safe products in the construction industry; i.e., the waste material can become a useful and valuable raw material by applying (respecting) all of the principles of the green economy.",
journal = "Materials",
title = "Sustainable Application of Waste Sludges from the Wastewater Treatment Plant Generated during the Production of Heating Devices in the Construction Industry",
volume = "17",
number = "5",
pages = "1089",
doi = "10.3390/ma17051089"
}

Stojmenović, M., Gulicovski, J., Nišić, N., Ristić, N., Liu, S., Loredo, J.,& Kragović, M.. (2024). Sustainable Application of Waste Sludges from the Wastewater Treatment Plant Generated during the Production of Heating Devices in the Construction Industry. in Materials, 17(5), 1089.
https://doi.org/10.3390/ma17051089

Stojmenović M, Gulicovski J, Nišić N, Ristić N, Liu S, Loredo J, Kragović M. Sustainable Application of Waste Sludges from the Wastewater Treatment Plant Generated during the Production of Heating Devices in the Construction Industry. in Materials. 2024;17(5):1089.
doi:10.3390/ma17051089 .

Stojmenović, Marija, Gulicovski, Jelena, Nišić, Neda, Ristić, Nenad, Liu, Shanke, Loredo, Jorge, Kragović, Milan, "Sustainable Application of Waste Sludges from the Wastewater Treatment Plant Generated during the Production of Heating Devices in the Construction Industry" in Materials, 17, no. 5 (2024):1089,
https://doi.org/10.3390/ma17051089 . .

TY  - JOUR
AU  - Kragović, Milan M.
AU  - Stojmenović, Marija
AU  - Ristić, Nenad
AU  - Milićević, Sonja
AU  - Živković, Sanja
AU  - Liu, Shanke
AU  - Gulicovski, Jelena
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10414
AB  - Solving problems with hazardous waste materials is of crucial importance today. In the presented study, the application of waste vitreous enamel as a cement replacement up to 30% in mortar and concrete production was investigated. The chemical and physical-chemical characterization of the starting material was performed, as well as a leaching test and physical-mechanical characterization of mortar and concrete mixes. Obtained results showed that, due to its chemical composition, the vitreous enamel used must be classified as hazardous waste. At the same time, it possesses pozzolanic properties and satisfies minimal criteria for use as a cement replacement. Testing mortars and concrete mixes indicate that waste vitreous enamel can be applied as a construction material for cement replacement in the maximal amount of 20%. The leaching test was performed in accordance with international standard EN 12457-2 on hardened mortar with a maximal cement replacement of 20%. The results showed that there was no significant release of toxic elements, i.e., that the practical application of hazardous waste vitreous enamel in the construction industry may be fully in line with environmental standards.
T2  - Buildings
T1  - Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement
VL  - 12
IS  - 8
SP  - 1287
DO  - 10.3390/buildings12081287
ER  - 

@article{
author = "Kragović, Milan M. and Stojmenović, Marija and Ristić, Nenad and Milićević, Sonja and Živković, Sanja and Liu, Shanke and Gulicovski, Jelena",
year = "2022",
abstract = "Solving problems with hazardous waste materials is of crucial importance today. In the presented study, the application of waste vitreous enamel as a cement replacement up to 30% in mortar and concrete production was investigated. The chemical and physical-chemical characterization of the starting material was performed, as well as a leaching test and physical-mechanical characterization of mortar and concrete mixes. Obtained results showed that, due to its chemical composition, the vitreous enamel used must be classified as hazardous waste. At the same time, it possesses pozzolanic properties and satisfies minimal criteria for use as a cement replacement. Testing mortars and concrete mixes indicate that waste vitreous enamel can be applied as a construction material for cement replacement in the maximal amount of 20%. The leaching test was performed in accordance with international standard EN 12457-2 on hardened mortar with a maximal cement replacement of 20%. The results showed that there was no significant release of toxic elements, i.e., that the practical application of hazardous waste vitreous enamel in the construction industry may be fully in line with environmental standards.",
journal = "Buildings",
title = "Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement",
volume = "12",
number = "8",
pages = "1287",
doi = "10.3390/buildings12081287"
}

Kragović, M. M., Stojmenović, M., Ristić, N., Milićević, S., Živković, S., Liu, S.,& Gulicovski, J.. (2022). Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement. in Buildings, 12(8), 1287.
https://doi.org/10.3390/buildings12081287

Kragović MM, Stojmenović M, Ristić N, Milićević S, Živković S, Liu S, Gulicovski J. Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement. in Buildings. 2022;12(8):1287.
doi:10.3390/buildings12081287 .

Kragović, Milan M., Stojmenović, Marija, Ristić, Nenad, Milićević, Sonja, Živković, Sanja, Liu, Shanke, Gulicovski, Jelena, "Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement" in Buildings, 12, no. 8 (2022):1287,
https://doi.org/10.3390/buildings12081287 . .

TY  - JOUR
AU  - Kragović, Milan M.
AU  - Ristić, Nenad
AU  - Gulicovski, Jelena J.
AU  - Nedeljković, Andrijana
AU  - Pašalić, Snežana
AU  - Ristović, Ivica
AU  - Stojmenović, Marija
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9914
AB  - The presented study is a continuation of the research with the aim of finding a useful
value of hazardous waste slag generated by the combustion of lignite in heating plants and its
application in the construction industry. The different amounts of cement (10%, 15%, 20% and
25%) were replaced with waste slag and silica fumes in mortars and concrete production. Detailed
physical–mechanical characterization was performed on the mortar and concrete samples according
to standard procedures. Test results indicated that the replacement of cement with slag and silica
fumes reduces the physical and mechanical properties of mortar and concrete, but cement composites
retained the required structural properties. If 15–20% is considered an acceptable level of compressive
strength decrease, then it can be concluded that waste slag can be implemented in practice and be
used as a construction material, with cement replacement in the maximal amount of 20% (17.8%
of slag and 2.2% of silica fumes). On hardened mortar samples with maximal possible cement
replacement (20%), physical–chemical characterizations were performed and included X-ray and
infrared spectrophotometry, scanning electron microscopy, and thermal analysis. Results showed the
absence of new phases and the presence of only those which were characteristic for starting samples,
predominantly portlandite, quartz, calcite and calcium silicate-oxide
T2  - Minerals
T1  - Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete
DO  - 10.3390/min11090925
ER  - 

@article{
author = "Kragović, Milan M. and Ristić, Nenad and Gulicovski, Jelena J. and Nedeljković, Andrijana and Pašalić, Snežana and Ristović, Ivica and Stojmenović, Marija",
year = "2021",
abstract = "The presented study is a continuation of the research with the aim of finding a useful
value of hazardous waste slag generated by the combustion of lignite in heating plants and its
application in the construction industry. The different amounts of cement (10%, 15%, 20% and
25%) were replaced with waste slag and silica fumes in mortars and concrete production. Detailed
physical–mechanical characterization was performed on the mortar and concrete samples according
to standard procedures. Test results indicated that the replacement of cement with slag and silica
fumes reduces the physical and mechanical properties of mortar and concrete, but cement composites
retained the required structural properties. If 15–20% is considered an acceptable level of compressive
strength decrease, then it can be concluded that waste slag can be implemented in practice and be
used as a construction material, with cement replacement in the maximal amount of 20% (17.8%
of slag and 2.2% of silica fumes). On hardened mortar samples with maximal possible cement
replacement (20%), physical–chemical characterizations were performed and included X-ray and
infrared spectrophotometry, scanning electron microscopy, and thermal analysis. Results showed the
absence of new phases and the presence of only those which were characteristic for starting samples,
predominantly portlandite, quartz, calcite and calcium silicate-oxide",
journal = "Minerals",
title = "Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete",
doi = "10.3390/min11090925"
}

Kragović, M. M., Ristić, N., Gulicovski, J. J., Nedeljković, A., Pašalić, S., Ristović, I.,& Stojmenović, M.. (2021). Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete. in Minerals.
https://doi.org/10.3390/min11090925

Kragović MM, Ristić N, Gulicovski JJ, Nedeljković A, Pašalić S, Ristović I, Stojmenović M. Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete. in Minerals. 2021;.
doi:10.3390/min11090925 .

Kragović, Milan M., Ristić, Nenad, Gulicovski, Jelena J., Nedeljković, Andrijana, Pašalić, Snežana, Ristović, Ivica, Stojmenović, Marija, "Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete" in Minerals (2021),
https://doi.org/10.3390/min11090925 . .

TY  - JOUR
AU  - Ristić, Nenad
AU  - Grdić, Zoran
AU  - Topličić-Ćurčić, Gordana
AU  - Grdić, Dušan
AU  - Dodevski, Vladimir
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9701
AB  - The demand of the contemporary society for renewable energy sources lead to the increase of the bio-power plants. Accordingly, the amount of ash generated by burning the biomass is increased, and its disposal becomes a large environmental problem. The paper presents the research of potential use of biomass wood ash as a partial replacement for coal fly ash (10%, 20%, 30% and 40% of mass) in production of self-compacting concrete (SCC). The effects of biomass wood ash on the properties of SCC in fresh and hardened states have been examined, as well as on the properties of durability. Test results indicated that the biomass wood ash slightly reduces the flowability and passing ability of SCC, while its addition enhances the viscosity of SCC and significantly prevents segregation and bleeding. SCCs with the contents of biomass wood ash up to 20% have approximately same mechanical strength as the reference mixture. Biomass wood ash has no negative effect on the resistance of concrete to the action of water under pressure, but a decrease of freeze/thaw resistance with de-icing salt is detected as its contents increases. The addition of biomass wood ash into SCC increases the drying shrinkage in the initial period of drying (up to 14 days), and it is decreased in a later phase. © 2021, Strojarski Facultet. All rights reserved.
T2  - Tehnički vjesnik - Technical Gazette
T1  - Properties of Self-compacting Concrete Produced with Biomass Wood Ash
VL  - 28
IS  - 2
SP  - 495
EP  - 502
DO  - 10.17559/TV-20200214103332
ER  - 

@article{
author = "Ristić, Nenad and Grdić, Zoran and Topličić-Ćurčić, Gordana and Grdić, Dušan and Dodevski, Vladimir",
year = "2021",
abstract = "The demand of the contemporary society for renewable energy sources lead to the increase of the bio-power plants. Accordingly, the amount of ash generated by burning the biomass is increased, and its disposal becomes a large environmental problem. The paper presents the research of potential use of biomass wood ash as a partial replacement for coal fly ash (10%, 20%, 30% and 40% of mass) in production of self-compacting concrete (SCC). The effects of biomass wood ash on the properties of SCC in fresh and hardened states have been examined, as well as on the properties of durability. Test results indicated that the biomass wood ash slightly reduces the flowability and passing ability of SCC, while its addition enhances the viscosity of SCC and significantly prevents segregation and bleeding. SCCs with the contents of biomass wood ash up to 20% have approximately same mechanical strength as the reference mixture. Biomass wood ash has no negative effect on the resistance of concrete to the action of water under pressure, but a decrease of freeze/thaw resistance with de-icing salt is detected as its contents increases. The addition of biomass wood ash into SCC increases the drying shrinkage in the initial period of drying (up to 14 days), and it is decreased in a later phase. © 2021, Strojarski Facultet. All rights reserved.",
journal = "Tehnički vjesnik - Technical Gazette",
title = "Properties of Self-compacting Concrete Produced with Biomass Wood Ash",
volume = "28",
number = "2",
pages = "495-502",
doi = "10.17559/TV-20200214103332"
}

Ristić, N., Grdić, Z., Topličić-Ćurčić, G., Grdić, D.,& Dodevski, V.. (2021). Properties of Self-compacting Concrete Produced with Biomass Wood Ash. in Tehnički vjesnik - Technical Gazette, 28(2), 495-502.
https://doi.org/10.17559/TV-20200214103332

Ristić N, Grdić Z, Topličić-Ćurčić G, Grdić D, Dodevski V. Properties of Self-compacting Concrete Produced with Biomass Wood Ash. in Tehnički vjesnik - Technical Gazette. 2021;28(2):495-502.
doi:10.17559/TV-20200214103332 .

Ristić, Nenad, Grdić, Zoran, Topličić-Ćurčić, Gordana, Grdić, Dušan, Dodevski, Vladimir, "Properties of Self-compacting Concrete Produced with Biomass Wood Ash" in Tehnički vjesnik - Technical Gazette, 28, no. 2 (2021):495-502,
https://doi.org/10.17559/TV-20200214103332 . .

TY  - JOUR
AU  - Nedeljković, Andrijana
AU  - Stojmenović, Marija
AU  - Gulicovski, Jelena J.
AU  - Ristić, Nenad
AU  - Milićević, Sonja
AU  - Krstić, Jugoslav B.
AU  - Kragović, Milan M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9730
AB  - Numerous factors influence the complexity of environmental and waste management problems, and the most significant goal is the reuse of materials that have completed their “life cycle” and the reduction in the use of new resources. In order to reduce impact of waste slag on the environment, in the present study, waste slag, generated in heating plants after lignite combustion, was characterized in detail and tested for application as a replacement for cement in mortar or concrete production. For physical–chemical characterization of slag, different experimental and instrumental techniques were used such as chemical composition and determination of the content of heavy metals, investigation of morphological and textural properties, thermal analysis, X-ray, and infrared spectroscopy. Physical–mechanical characterization of slag was also performed and included determination of activity index, water requirement, setting time and soundness. A leaching test was also performed. Presented results show that waste slag may be used in mortar and concrete production as a partial cement replacement, but after additional combustion at 650 °C and partial replacement of slag with silica fume in the minimal amount of 12%. The maximal obtained cement replacement was 20% (17.8% slag and 2.2% of silica fume).
PB  - MDPI
T2  - Minerals
T1  - Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I—Physical–Chemical and Physical–Mechanical Characterization of Slag
VL  - 10
IS  - 11
SP  - 992
DO  - 10.3390/min10110992
ER  - 

@article{
author = "Nedeljković, Andrijana and Stojmenović, Marija and Gulicovski, Jelena J. and Ristić, Nenad and Milićević, Sonja and Krstić, Jugoslav B. and Kragović, Milan M.",
year = "2020",
abstract = "Numerous factors influence the complexity of environmental and waste management problems, and the most significant goal is the reuse of materials that have completed their “life cycle” and the reduction in the use of new resources. In order to reduce impact of waste slag on the environment, in the present study, waste slag, generated in heating plants after lignite combustion, was characterized in detail and tested for application as a replacement for cement in mortar or concrete production. For physical–chemical characterization of slag, different experimental and instrumental techniques were used such as chemical composition and determination of the content of heavy metals, investigation of morphological and textural properties, thermal analysis, X-ray, and infrared spectroscopy. Physical–mechanical characterization of slag was also performed and included determination of activity index, water requirement, setting time and soundness. A leaching test was also performed. Presented results show that waste slag may be used in mortar and concrete production as a partial cement replacement, but after additional combustion at 650 °C and partial replacement of slag with silica fume in the minimal amount of 12%. The maximal obtained cement replacement was 20% (17.8% slag and 2.2% of silica fume).",
publisher = "MDPI",
journal = "Minerals",
title = "Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I—Physical–Chemical and Physical–Mechanical Characterization of Slag",
volume = "10",
number = "11",
pages = "992",
doi = "10.3390/min10110992"
}

Nedeljković, A., Stojmenović, M., Gulicovski, J. J., Ristić, N., Milićević, S., Krstić, J. B.,& Kragović, M. M.. (2020). Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I—Physical–Chemical and Physical–Mechanical Characterization of Slag. in Minerals
MDPI., 10(11), 992.
https://doi.org/10.3390/min10110992

Nedeljković A, Stojmenović M, Gulicovski JJ, Ristić N, Milićević S, Krstić JB, Kragović MM. Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I—Physical–Chemical and Physical–Mechanical Characterization of Slag. in Minerals. 2020;10(11):992.
doi:10.3390/min10110992 .

Nedeljković, Andrijana, Stojmenović, Marija, Gulicovski, Jelena J., Ristić, Nenad, Milićević, Sonja, Krstić, Jugoslav B., Kragović, Milan M., "Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I—Physical–Chemical and Physical–Mechanical Characterization of Slag" in Minerals, 10, no. 11 (2020):992,
https://doi.org/10.3390/min10110992 . .