TY  - JOUR
AU  - Rakić, Jelena
AU  - Baščarević, Zvezdana
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1743
AB  - One of the measures to reduce the carbon footprint of the Portland cement (PC) manufacturing process is through a wider use of supplementary cementitious and waste materials. The main objective of this work was to produce a new binder using two different waste materials: fly ash FA) from thermal power plants and spent fluid catalytic cracking catalyst (sFCCC) from petrol refineries. In order to improve their reactivity, both FA and sFCCC were mechanically activated prior to the preparation of the binder. The new binder consisted mostly of the waste materials (70 mass %), with PC as a minor component (30 mass %). It was found that using sFCCC as the binder component accelerated cement hydration and the pozzolanic reaction. The new binder had a shorter setting time and a higher early strength than the binder prepared without sFCCC.
PB  - MDPI
T2  - Materials Proceedings
T1  - Influence of Spent Fluid Catalytic Cracking Catalyst on the Properties of the New Binder Based on Fly Ash and Portland Cement
IS  - 1
SP  - 8
VL  - 13
DO  - 10.3390/materproc2023013008
ER  - 

@article{
author = "Rakić, Jelena and Baščarević, Zvezdana",
year = "2023",
abstract = "One of the measures to reduce the carbon footprint of the Portland cement (PC) manufacturing process is through a wider use of supplementary cementitious and waste materials. The main objective of this work was to produce a new binder using two different waste materials: fly ash FA) from thermal power plants and spent fluid catalytic cracking catalyst (sFCCC) from petrol refineries. In order to improve their reactivity, both FA and sFCCC were mechanically activated prior to the preparation of the binder. The new binder consisted mostly of the waste materials (70 mass %), with PC as a minor component (30 mass %). It was found that using sFCCC as the binder component accelerated cement hydration and the pozzolanic reaction. The new binder had a shorter setting time and a higher early strength than the binder prepared without sFCCC.",
publisher = "MDPI",
journal = "Materials Proceedings",
title = "Influence of Spent Fluid Catalytic Cracking Catalyst on the Properties of the New Binder Based on Fly Ash and Portland Cement",
number = "1",
pages = "8",
volume = "13",
doi = "10.3390/materproc2023013008"
}

Rakić, J.,& Baščarević, Z.. (2023). Influence of Spent Fluid Catalytic Cracking Catalyst on the Properties of the New Binder Based on Fly Ash and Portland Cement. in Materials Proceedings
MDPI., 13(1), 8.
https://doi.org/10.3390/materproc2023013008

Rakić J, Baščarević Z. Influence of Spent Fluid Catalytic Cracking Catalyst on the Properties of the New Binder Based on Fly Ash and Portland Cement. in Materials Proceedings. 2023;13(1):8.
doi:10.3390/materproc2023013008 .

Rakić, Jelena, Baščarević, Zvezdana, "Influence of Spent Fluid Catalytic Cracking Catalyst on the Properties of the New Binder Based on Fly Ash and Portland Cement" in Materials Proceedings, 13, no. 1 (2023):8,
https://doi.org/10.3390/materproc2023013008 . .

TY  - CONF
AU  - Rakić, Jelena
AU  - Baščarević, Zvezdana
AU  - Petrović, Rada
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1739
AB  - The use of binders based on waste materials in construction industry has both ecological and
economic advantages over the use of commercial Portland cements (PC). Preserving the natural
resources needed for PC production, as well as reusing waste materials instead of disposing them in landfills, contributes significantly to the protection of the environment. Also, the price of waste
materials is usually much lower than the price of raw materials used for production of PC.
Coal combustion in thermal power plants produces huge amounts of fly ash (FA). It is estimated
that 500-750 million tonnes of FA are generated worldwide annually, with a global utilization rate
of only 25 %. Due to pozzolanic properties of this aluminosilicate waste material, FA has been
used as PC component for decades. However, the broad use of binders made of high volume of
FA (>50%) is limited by their relatively long setting time and low early strength.
The other waste material of interest in this work was fluid catalytic cracking catalyst residue
(FC3R), a by-product from petrol refineries, which primarily consists of zeolite and amorphous
aluminosilicates and also shows pozzolanic activity. Due to relatively small quantities of FC3R
produced (~160000 tonnes per year globally), landfilling is usually considered as the most
economical option for its disposal.
The aim of this work was to investigate the performance properties of ternary binder containing
high volume of the two different waste materials, FA and FC3R. The binder consisted of FA,
FC3R, and PC (commercial CEM I) mixed in a 49:21:30 mass ratio. Both waste materials were
mechanically activated prior to the binder synthesis. Characterization of raw and mechanically
activated waste materials via determination of particle size distribution, morphology and mineral
composition, was conducted. Analyses of the ternary binder properties showed that using FC3R
as the binder component resulted in acceleration of cement hydration and pozzolanic reaction. The
ternary binder had shorter setting time and higher early strength than the control binder
synthesized with 70 mass% of FA and 30 mass% of PC.
PB  - Materials Research Society of Serbia
C3  - Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS, Herceg Novi, Montenegro, August 29 - September 02, 2022
T1  - Performance of ternary cement binders containing high volume of fly ash and fluid catalytic cracking catalyst residue
SP  - 143
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1739
ER  - 

@conference{
author = "Rakić, Jelena and Baščarević, Zvezdana and Petrović, Rada",
year = "2022",
abstract = "The use of binders based on waste materials in construction industry has both ecological and
economic advantages over the use of commercial Portland cements (PC). Preserving the natural
resources needed for PC production, as well as reusing waste materials instead of disposing them in landfills, contributes significantly to the protection of the environment. Also, the price of waste
materials is usually much lower than the price of raw materials used for production of PC.
Coal combustion in thermal power plants produces huge amounts of fly ash (FA). It is estimated
that 500-750 million tonnes of FA are generated worldwide annually, with a global utilization rate
of only 25 %. Due to pozzolanic properties of this aluminosilicate waste material, FA has been
used as PC component for decades. However, the broad use of binders made of high volume of
FA (>50%) is limited by their relatively long setting time and low early strength.
The other waste material of interest in this work was fluid catalytic cracking catalyst residue
(FC3R), a by-product from petrol refineries, which primarily consists of zeolite and amorphous
aluminosilicates and also shows pozzolanic activity. Due to relatively small quantities of FC3R
produced (~160000 tonnes per year globally), landfilling is usually considered as the most
economical option for its disposal.
The aim of this work was to investigate the performance properties of ternary binder containing
high volume of the two different waste materials, FA and FC3R. The binder consisted of FA,
FC3R, and PC (commercial CEM I) mixed in a 49:21:30 mass ratio. Both waste materials were
mechanically activated prior to the binder synthesis. Characterization of raw and mechanically
activated waste materials via determination of particle size distribution, morphology and mineral
composition, was conducted. Analyses of the ternary binder properties showed that using FC3R
as the binder component resulted in acceleration of cement hydration and pozzolanic reaction. The
ternary binder had shorter setting time and higher early strength than the control binder
synthesized with 70 mass% of FA and 30 mass% of PC.",
publisher = "Materials Research Society of Serbia",
journal = "Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS, Herceg Novi, Montenegro, August 29 - September 02, 2022",
title = "Performance of ternary cement binders containing high volume of fly ash and fluid catalytic cracking catalyst residue",
pages = "143",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1739"
}

Rakić, J., Baščarević, Z.,& Petrović, R.. (2022). Performance of ternary cement binders containing high volume of fly ash and fluid catalytic cracking catalyst residue. in Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS, Herceg Novi, Montenegro, August 29 - September 02, 2022
Materials Research Society of Serbia., 143.
https://hdl.handle.net/21.15107/rcub_rimsi_1739

Rakić J, Baščarević Z, Petrović R. Performance of ternary cement binders containing high volume of fly ash and fluid catalytic cracking catalyst residue. in Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS, Herceg Novi, Montenegro, August 29 - September 02, 2022. 2022;:143.
https://hdl.handle.net/21.15107/rcub_rimsi_1739 .

Rakić, Jelena, Baščarević, Zvezdana, Petrović, Rada, "Performance of ternary cement binders containing high volume of fly ash and fluid catalytic cracking catalyst residue" in Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS, Herceg Novi, Montenegro, August 29 - September 02, 2022 (2022):143,
https://hdl.handle.net/21.15107/rcub_rimsi_1739 .

Rakić, J., Baščarević, Z.,& Carević, V.. (2021). Технолошки поступак синтезе везива отпорног на дејство мраза применом хемијски и механички активираног електрофилтерског пепела из термоелектране као полазног материјала за његову синтезу. .
https://hdl.handle.net/21.15107/rcub_rimsi_1956

Rakić J, Baščarević Z, Carević V. Технолошки поступак синтезе везива отпорног на дејство мраза применом хемијски и механички активираног електрофилтерског пепела из термоелектране као полазног материјала за његову синтезу. 2021;.
https://hdl.handle.net/21.15107/rcub_rimsi_1956 .

Rakić, Jelena, Baščarević, Zvezdana, Carević, Vedran, "Технолошки поступак синтезе везива отпорног на дејство мраза применом хемијски и механички активираног електрофилтерског пепела из термоелектране као полазног материјала за његову синтезу" (2021),
https://hdl.handle.net/21.15107/rcub_rimsi_1956 .

Baščarević, Z., Rakić, J.,& Petrović, R.. (2021). Геополимер на бази отпадног катализатора из процеса каталитичког крековања нафте добијен применом раствора натријум-силиката као алкалног активатора. .
https://hdl.handle.net/21.15107/rcub_rimsi_1955

Baščarević Z, Rakić J, Petrović R. Геополимер на бази отпадног катализатора из процеса каталитичког крековања нафте добијен применом раствора натријум-силиката као алкалног активатора. 2021;.
https://hdl.handle.net/21.15107/rcub_rimsi_1955 .

Baščarević, Zvezdana, Rakić, Jelena, Petrović, Rada, "Геополимер на бази отпадног катализатора из процеса каталитичког крековања нафте добијен применом раствора натријум-силиката као алкалног активатора" (2021),
https://hdl.handle.net/21.15107/rcub_rimsi_1955 .

TY  - JOUR
AU  - Rakić, Jelena
AU  - Baščarević, Zvezdana
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1741
AB  - Veziva sa velikim udelom elektrofilterskog pepela (EFP) se odlikuju dugim vremenima vezivanja i malim početnim čvrstoćama. Primenom metoda mehaničke i/ili hemijske aktivacije moguće je značajno povećati reaktivnost EFP, te poboljšati svojstva veziva. U ovom radu ispitivan je uticaj mehaničke aktivacije EFP na svojstva veziva sa 70% EFP i 30% portland cementa. Dodatno, analiziran je uticaj hemijske aktivacije veziva primenom natrijum-sulfata kao aktivatora. Primenom kombinacije postupaka mehaničke i hemijske aktivacije dobijeno je vezivo koje je imalo najveće čvrstoće u početnom periodu (do 7 dana) i najkraće vreme vezivanja. Ipak, najveću čvrstoću posle 90 dana imalo je vezivo na bazi mehanički aktiviranog EFP.
AB  - High volume fly ash (FA) binders are characterized by long setting times and low early strength. By
applying mechanical and/or chemical activation methods, it is possible to increase the reactivity of FA and improve the properties of the binder. In this paper, influence of mechanical activation of FA on the properties of binders prepared with 70% FA and 30% Portland cement was investigated. Additionally, effect of chemical activation of the binder by using sodium sulfate as activator was evaluated. The binder obtained by combining mechanical and chemical activation had the highest early strength (up to 7 days) and the shortest setting times. However, the highest strength of the binder after 90 days was obtained by applying only mechanical activation of FA.
PB  - Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Poboljšanje svojstava veziva sa velikim udelom elektrofilterskog pepela primenom postupaka mehaničke i hemijske aktivacije
T1  - Improving properties of high volume fly ash binder by mechanical and chemical activation
EP  - 559
SP  - 553
VL  - 5
DO  - 10.5937/tehnika2005553R
ER  - 

@article{
author = "Rakić, Jelena and Baščarević, Zvezdana",
year = "2020",
abstract = "Veziva sa velikim udelom elektrofilterskog pepela (EFP) se odlikuju dugim vremenima vezivanja i malim početnim čvrstoćama. Primenom metoda mehaničke i/ili hemijske aktivacije moguće je značajno povećati reaktivnost EFP, te poboljšati svojstva veziva. U ovom radu ispitivan je uticaj mehaničke aktivacije EFP na svojstva veziva sa 70% EFP i 30% portland cementa. Dodatno, analiziran je uticaj hemijske aktivacije veziva primenom natrijum-sulfata kao aktivatora. Primenom kombinacije postupaka mehaničke i hemijske aktivacije dobijeno je vezivo koje je imalo najveće čvrstoće u početnom periodu (do 7 dana) i najkraće vreme vezivanja. Ipak, najveću čvrstoću posle 90 dana imalo je vezivo na bazi mehanički aktiviranog EFP., High volume fly ash (FA) binders are characterized by long setting times and low early strength. By
applying mechanical and/or chemical activation methods, it is possible to increase the reactivity of FA and improve the properties of the binder. In this paper, influence of mechanical activation of FA on the properties of binders prepared with 70% FA and 30% Portland cement was investigated. Additionally, effect of chemical activation of the binder by using sodium sulfate as activator was evaluated. The binder obtained by combining mechanical and chemical activation had the highest early strength (up to 7 days) and the shortest setting times. However, the highest strength of the binder after 90 days was obtained by applying only mechanical activation of FA.",
publisher = "Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Poboljšanje svojstava veziva sa velikim udelom elektrofilterskog pepela primenom postupaka mehaničke i hemijske aktivacije, Improving properties of high volume fly ash binder by mechanical and chemical activation",
pages = "559-553",
volume = "5",
doi = "10.5937/tehnika2005553R"
}

Rakić, J.,& Baščarević, Z.. (2020). Poboljšanje svojstava veziva sa velikim udelom elektrofilterskog pepela primenom postupaka mehaničke i hemijske aktivacije. in Tehnika
Savez inženjera i tehničara Srbije., 5, 553-559.
https://doi.org/10.5937/tehnika2005553R

Rakić J, Baščarević Z. Poboljšanje svojstava veziva sa velikim udelom elektrofilterskog pepela primenom postupaka mehaničke i hemijske aktivacije. in Tehnika. 2020;5:553-559.
doi:10.5937/tehnika2005553R .

Rakić, Jelena, Baščarević, Zvezdana, "Poboljšanje svojstava veziva sa velikim udelom elektrofilterskog pepela primenom postupaka mehaničke i hemijske aktivacije" in Tehnika, 5 (2020):553-559,
https://doi.org/10.5937/tehnika2005553R . .

TY  - CONF
AU  - Rakić, Jelena
AU  - Baščarević, Zvezdana
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1733
AB  - More than 5.5 million tonnes of fly ash (FA), a by-product originating from coal combustion in thermal power plants (TPP), is produced in Serbia annually. Only small part of the FA is reused, mostly by cement industry, while the rest of it is disposed on landfills. Given its chemical composition and particle size distribution, FA has huge potential for reuse, especially in construction industry. Some of the most promising ways for FA utilization in building materials industry are synthesis of alkali-activated materials (AAM) and binders in which different quantities of Portland cement (PC) are substituted with FA (up to 80%). However, potential use of FA strongly depends on its reactivity. Among factors that affect FA reactivity, particle size distribution and amorphous phase content are the most important. A way to improve the reactivity of FA is mechanical activation, a process where mechanical energy is used to increase chemical reactivity of material. The main results of the mechanical activation process are particle size reduction, increase in specific surface area, generation of structural defects, increase in amorphous phase content, which all lead to better reactivity of material.
In this paper, FA from TPP “Kolubara”, Serbia, was mechanically activated in planetary ball mill using different ball-to-ash ratios, from 1:3 to 1:20. Characterization of raw and activated FA, such as particle size distribution, mineral and chemical composition, morphology and specific surface area, was carried out. The effects of mechanical activation of FA on the properties of resulting binders, both AAM and binder with PC, were also investigated.
It was found that mechanical activation, even with the lowest ball-to-ash ratio (1:3), caused drastic changes in particle size distribution and specific surface area of FA. Significant increase in compressive strength of mortars based on mechanically activated FA, relative to mortars based on raw FA, indicated that reactivity of FA was considerably improved by mechanical activation. Further increase in the ball-to ash ratio led to less significant changes in the properties of the activated FA and therefore, less considerable increase in compressive strength of the synthesized mortars. It was concluded that, in terms of the balance between time and energy consumption, on the one hand, and improvement of the FA properties on the other, further increase of ball-to-ash ratios was not justified.
PB  - Institute for multidisciplinary research
C3  - 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia
T1  - Optimization of mechanical activation of fly ash
SP  - 138
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1733
ER  - 

@conference{
author = "Rakić, Jelena and Baščarević, Zvezdana",
year = "2019",
abstract = "More than 5.5 million tonnes of fly ash (FA), a by-product originating from coal combustion in thermal power plants (TPP), is produced in Serbia annually. Only small part of the FA is reused, mostly by cement industry, while the rest of it is disposed on landfills. Given its chemical composition and particle size distribution, FA has huge potential for reuse, especially in construction industry. Some of the most promising ways for FA utilization in building materials industry are synthesis of alkali-activated materials (AAM) and binders in which different quantities of Portland cement (PC) are substituted with FA (up to 80%). However, potential use of FA strongly depends on its reactivity. Among factors that affect FA reactivity, particle size distribution and amorphous phase content are the most important. A way to improve the reactivity of FA is mechanical activation, a process where mechanical energy is used to increase chemical reactivity of material. The main results of the mechanical activation process are particle size reduction, increase in specific surface area, generation of structural defects, increase in amorphous phase content, which all lead to better reactivity of material.
In this paper, FA from TPP “Kolubara”, Serbia, was mechanically activated in planetary ball mill using different ball-to-ash ratios, from 1:3 to 1:20. Characterization of raw and activated FA, such as particle size distribution, mineral and chemical composition, morphology and specific surface area, was carried out. The effects of mechanical activation of FA on the properties of resulting binders, both AAM and binder with PC, were also investigated.
It was found that mechanical activation, even with the lowest ball-to-ash ratio (1:3), caused drastic changes in particle size distribution and specific surface area of FA. Significant increase in compressive strength of mortars based on mechanically activated FA, relative to mortars based on raw FA, indicated that reactivity of FA was considerably improved by mechanical activation. Further increase in the ball-to ash ratio led to less significant changes in the properties of the activated FA and therefore, less considerable increase in compressive strength of the synthesized mortars. It was concluded that, in terms of the balance between time and energy consumption, on the one hand, and improvement of the FA properties on the other, further increase of ball-to-ash ratios was not justified.",
publisher = "Institute for multidisciplinary research",
journal = "5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia",
title = "Optimization of mechanical activation of fly ash",
pages = "138",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1733"
}

Rakić, J.,& Baščarević, Z.. (2019). Optimization of mechanical activation of fly ash. in 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia
Institute for multidisciplinary research., 138.
https://hdl.handle.net/21.15107/rcub_rimsi_1733

Rakić J, Baščarević Z. Optimization of mechanical activation of fly ash. in 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia. 2019;:138.
https://hdl.handle.net/21.15107/rcub_rimsi_1733 .

Rakić, Jelena, Baščarević, Zvezdana, "Optimization of mechanical activation of fly ash" in 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia (2019):138,
https://hdl.handle.net/21.15107/rcub_rimsi_1733 .

TY  - CONF
AU  - Baščarević, Zvezdana
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1938
AB  - Fly ash, a by-product from coal combustion in thermal power plants, is one of the most abundant anthropogenic materials. It is estimated that between 500 and 750 million tonnes of this material is generated worldwide annually. Various recycling and reuse options have been recognized for a long time now, with the highest quantities of fly ash being used in construction industry, either as a raw material or as an additive in cement and concrete industry. Current utilization rates of fly ash are assessed to be around 90 % in EU, 70 % in China and 40 % in USA, but with global average at only 25 %. Very often, possibilities to reuse local fly ash are limited by its properties, i.e. reactivity. Particle size distribution, chemical and mineralogical compositions are the most important properties of a fly ash sample that influence its reuse potential.
This works shows the effects of mechanical and chemical activation of several fly ash samples from several power plants on the properties of the fly ash and the properties of different construction materials based on the fly ash. Mechanical activation of the fly ash samples was done in a planetary ball mill. Optimization of the activation process was performed by gradual decrease in the grinding balls to fly ash ratio, thus decreasing the energy used for the process. It was found that even with very low ball-to-powder ratio, such as 3, it was possible to achieve drastic improvement in fly ash properties, in terms of particle size distribution and specific surface area.
Both starting and mechanically activated fly ash samples were used as raw materials for synthesis of geopolymers (binder materials made 100 % of fly ash) and hybrid binders (high volume fly ash binders, in which up to 70 mass % of Portland cement was substituted by fly ash). Also, suitability of the fly ash samples as cement replacement material in concrete was evaluated. It was found that with proper chemical activation of the fly ash samples it was possible to produce binder materials with mechanical properties comparable, or even superior, to traditionally used Portland cement.
C3  - 9th International Advances in Applied Physics & Materials Science Congress & Exhibition, APMAS 2019, Oludeniz/Mugla, Turkey
T1  - Methods to improve fly ash reactivity and increase its reuse potential in construction materials industry
EP  - 50
SP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1938
ER  - 

@conference{
author = "Baščarević, Zvezdana",
year = "2019",
abstract = "Fly ash, a by-product from coal combustion in thermal power plants, is one of the most abundant anthropogenic materials. It is estimated that between 500 and 750 million tonnes of this material is generated worldwide annually. Various recycling and reuse options have been recognized for a long time now, with the highest quantities of fly ash being used in construction industry, either as a raw material or as an additive in cement and concrete industry. Current utilization rates of fly ash are assessed to be around 90 % in EU, 70 % in China and 40 % in USA, but with global average at only 25 %. Very often, possibilities to reuse local fly ash are limited by its properties, i.e. reactivity. Particle size distribution, chemical and mineralogical compositions are the most important properties of a fly ash sample that influence its reuse potential.
This works shows the effects of mechanical and chemical activation of several fly ash samples from several power plants on the properties of the fly ash and the properties of different construction materials based on the fly ash. Mechanical activation of the fly ash samples was done in a planetary ball mill. Optimization of the activation process was performed by gradual decrease in the grinding balls to fly ash ratio, thus decreasing the energy used for the process. It was found that even with very low ball-to-powder ratio, such as 3, it was possible to achieve drastic improvement in fly ash properties, in terms of particle size distribution and specific surface area.
Both starting and mechanically activated fly ash samples were used as raw materials for synthesis of geopolymers (binder materials made 100 % of fly ash) and hybrid binders (high volume fly ash binders, in which up to 70 mass % of Portland cement was substituted by fly ash). Also, suitability of the fly ash samples as cement replacement material in concrete was evaluated. It was found that with proper chemical activation of the fly ash samples it was possible to produce binder materials with mechanical properties comparable, or even superior, to traditionally used Portland cement.",
journal = "9th International Advances in Applied Physics & Materials Science Congress & Exhibition, APMAS 2019, Oludeniz/Mugla, Turkey",
title = "Methods to improve fly ash reactivity and increase its reuse potential in construction materials industry",
pages = "50-50",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1938"
}

Baščarević, Z.. (2019). Methods to improve fly ash reactivity and increase its reuse potential in construction materials industry. in 9th International Advances in Applied Physics & Materials Science Congress & Exhibition, APMAS 2019, Oludeniz/Mugla, Turkey, 50-50.
https://hdl.handle.net/21.15107/rcub_rimsi_1938

Baščarević Z. Methods to improve fly ash reactivity and increase its reuse potential in construction materials industry. in 9th International Advances in Applied Physics & Materials Science Congress & Exhibition, APMAS 2019, Oludeniz/Mugla, Turkey. 2019;:50-50.
https://hdl.handle.net/21.15107/rcub_rimsi_1938 .

Baščarević, Zvezdana, "Methods to improve fly ash reactivity and increase its reuse potential in construction materials industry" in 9th International Advances in Applied Physics & Materials Science Congress & Exhibition, APMAS 2019, Oludeniz/Mugla, Turkey (2019):50-50,
https://hdl.handle.net/21.15107/rcub_rimsi_1938 .

TY  - CONF
AU  - Baščarević, Zvezdana
AU  - Rakić, Jelena
AU  - Petrović, Rada
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1779
AB  - Fluid catalytic cracking catalyst residue (spent FCCC) is an inorganic by-product obtained from petrol refineries. It is made up mostly of SiO2 and Al2O3 (about 90 % of its chemical composition) and consists mainly of zeolite (faujasite) and amorphous aluminosilicate matrix. Due to the relatively low quantities of the spent FCCC produced worldwide (~160000 tons per year), landfilling is usually considered as the simplest and the most economical option for its disposal.
This work assesses the possibility to use locally produced spent FCCC as starting material for alkali activated materials (geopolymers) synthesis. Geopolymers are class of alkali activated materials that are obtained by alkali activation of an aluminosilicate precursor. The main product of alkali activation reaction is amorphous aluminosilicate gel, “geopolymer” gel. Due to highly interconnected, three-dimensional structure of geopolymer gel, these materials can show high compressive strength and very good durability and can be regarded as an alternative to Portland cement in some applications.
Synthesis of geopolymer binder based on spent FCCC was carried out by using sodium silicate solutions with different SiO2/Na2O ratios as alkaline activators. The alkali activation reaction was performed at 65 °C for 24 hours. Structural characterization of the synthesized geopolymer samples showed that alkali activation of the spent FCCC sample led to the conversion of the zeolitic phase (faujasite) to aluminosilicate geopolymer gel. It was found that, when SiO2/Na2O ratio of the activating solution was 1.25 - 1.50, compressive strength of the geopolymer mortars based on spent FCCC was higher than 70 MPa. These results indicated potential to use spent FCCC as precursor for geopolymer production.
PB  - F.A. Finger-Institut für Baustoffkunde
C3  - 20. Internationale Baustofftagung, Ibausil, 12. - 14. September 2018, Weimar, Bundesrepublik Deutschland
T1  - Possibility to use spent catalyst from fluid catalytic cracking process for geopolymer synthesis
EP  - 1992
SP  - 1985
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1779
ER  - 

@conference{
author = "Baščarević, Zvezdana and Rakić, Jelena and Petrović, Rada",
year = "2018",
abstract = "Fluid catalytic cracking catalyst residue (spent FCCC) is an inorganic by-product obtained from petrol refineries. It is made up mostly of SiO2 and Al2O3 (about 90 % of its chemical composition) and consists mainly of zeolite (faujasite) and amorphous aluminosilicate matrix. Due to the relatively low quantities of the spent FCCC produced worldwide (~160000 tons per year), landfilling is usually considered as the simplest and the most economical option for its disposal.
This work assesses the possibility to use locally produced spent FCCC as starting material for alkali activated materials (geopolymers) synthesis. Geopolymers are class of alkali activated materials that are obtained by alkali activation of an aluminosilicate precursor. The main product of alkali activation reaction is amorphous aluminosilicate gel, “geopolymer” gel. Due to highly interconnected, three-dimensional structure of geopolymer gel, these materials can show high compressive strength and very good durability and can be regarded as an alternative to Portland cement in some applications.
Synthesis of geopolymer binder based on spent FCCC was carried out by using sodium silicate solutions with different SiO2/Na2O ratios as alkaline activators. The alkali activation reaction was performed at 65 °C for 24 hours. Structural characterization of the synthesized geopolymer samples showed that alkali activation of the spent FCCC sample led to the conversion of the zeolitic phase (faujasite) to aluminosilicate geopolymer gel. It was found that, when SiO2/Na2O ratio of the activating solution was 1.25 - 1.50, compressive strength of the geopolymer mortars based on spent FCCC was higher than 70 MPa. These results indicated potential to use spent FCCC as precursor for geopolymer production.",
publisher = "F.A. Finger-Institut für Baustoffkunde",
journal = "20. Internationale Baustofftagung, Ibausil, 12. - 14. September 2018, Weimar, Bundesrepublik Deutschland",
title = "Possibility to use spent catalyst from fluid catalytic cracking process for geopolymer synthesis",
pages = "1992-1985",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1779"
}

Baščarević, Z., Rakić, J.,& Petrović, R.. (2018). Possibility to use spent catalyst from fluid catalytic cracking process for geopolymer synthesis. in 20. Internationale Baustofftagung, Ibausil, 12. - 14. September 2018, Weimar, Bundesrepublik Deutschland
F.A. Finger-Institut für Baustoffkunde., 1, 1985-1992.
https://hdl.handle.net/21.15107/rcub_rimsi_1779

Baščarević Z, Rakić J, Petrović R. Possibility to use spent catalyst from fluid catalytic cracking process for geopolymer synthesis. in 20. Internationale Baustofftagung, Ibausil, 12. - 14. September 2018, Weimar, Bundesrepublik Deutschland. 2018;1:1985-1992.
https://hdl.handle.net/21.15107/rcub_rimsi_1779 .

Baščarević, Zvezdana, Rakić, Jelena, Petrović, Rada, "Possibility to use spent catalyst from fluid catalytic cracking process for geopolymer synthesis" in 20. Internationale Baustofftagung, Ibausil, 12. - 14. September 2018, Weimar, Bundesrepublik Deutschland, 1 (2018):1985-1992,
https://hdl.handle.net/21.15107/rcub_rimsi_1779 .