TY  - JOUR
AU  - Jelić, Ivana
AU  - Savić, Aleksandar
AU  - Miljojčić, Tatjana
AU  - Šljivić-Ivanović, Marija
AU  - Dimović, Slavko
AU  - Janković, Marija
AU  - Perović, Ivana
AU  - Zakić, Dimitrije
AU  - Antonijević, Dragi
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12100
AB  - The development of energy-efficient and low-carbon geopolymer-based paving blocks made from waste, as an environmental-friendly material, was evaluated. Ground concrete (GC) and solid brick (SB) powder, as the representatives of construction and demolition waste (C&DW), with the addition of fly ash (FA) and silica fume (SF), were used. Waste samples were characterized in terms of surface functional groups and radioactivity. The FT-IR spectra showed the required amorphous or semi-crystalline alumino-silicate structure. The gamma spectrometry confirmed waste samples' radiological safety. Hardened geopolymer samples were subjected to physical-mechanical investigation comprising of density, water content, compressive and flexural strengths determination. Based on strength characteristics, the three best prototype mixtures were selected and subjected to further compressive strength determination and durability assessment. Prototype sample SBFASFp1, with a compressive strength of 18.7 MPa, was shown the highest value of all samples, almost the same as the corresponding SBFASF1 sample. Freeze-thaw and the subsequent carbonation tests, as durability indicators, showed that the SBFASF1 sample had the slightest strength decrease, making it most durable in these conditions. These satisfactory test results showed the favorable effects of alternatives to cementitious materials, encouraging their utilization and contributing to the sustainability of the construction sector.
T2  - Science of Sintering
T1  - Development of low carbon and energy-efficient geopolymer-based paving blocks
IS  - InPress
SP  - 59
DO  - 10.2298/SOS231009059J
ER  - 

@article{
author = "Jelić, Ivana and Savić, Aleksandar and Miljojčić, Tatjana and Šljivić-Ivanović, Marija and Dimović, Slavko and Janković, Marija and Perović, Ivana and Zakić, Dimitrije and Antonijević, Dragi",
year = "2023",
abstract = "The development of energy-efficient and low-carbon geopolymer-based paving blocks made from waste, as an environmental-friendly material, was evaluated. Ground concrete (GC) and solid brick (SB) powder, as the representatives of construction and demolition waste (C&DW), with the addition of fly ash (FA) and silica fume (SF), were used. Waste samples were characterized in terms of surface functional groups and radioactivity. The FT-IR spectra showed the required amorphous or semi-crystalline alumino-silicate structure. The gamma spectrometry confirmed waste samples' radiological safety. Hardened geopolymer samples were subjected to physical-mechanical investigation comprising of density, water content, compressive and flexural strengths determination. Based on strength characteristics, the three best prototype mixtures were selected and subjected to further compressive strength determination and durability assessment. Prototype sample SBFASFp1, with a compressive strength of 18.7 MPa, was shown the highest value of all samples, almost the same as the corresponding SBFASF1 sample. Freeze-thaw and the subsequent carbonation tests, as durability indicators, showed that the SBFASF1 sample had the slightest strength decrease, making it most durable in these conditions. These satisfactory test results showed the favorable effects of alternatives to cementitious materials, encouraging their utilization and contributing to the sustainability of the construction sector.",
journal = "Science of Sintering",
title = "Development of low carbon and energy-efficient geopolymer-based paving blocks",
number = "InPress",
pages = "59",
doi = "10.2298/SOS231009059J"
}

Jelić, I., Savić, A., Miljojčić, T., Šljivić-Ivanović, M., Dimović, S., Janković, M., Perović, I., Zakić, D.,& Antonijević, D.. (2023). Development of low carbon and energy-efficient geopolymer-based paving blocks. in Science of Sintering(InPress), 59.
https://doi.org/10.2298/SOS231009059J

Jelić I, Savić A, Miljojčić T, Šljivić-Ivanović M, Dimović S, Janković M, Perović I, Zakić D, Antonijević D. Development of low carbon and energy-efficient geopolymer-based paving blocks. in Science of Sintering. 2023;(InPress):59.
doi:10.2298/SOS231009059J .

Jelić, Ivana, Savić, Aleksandar, Miljojčić, Tatjana, Šljivić-Ivanović, Marija, Dimović, Slavko, Janković, Marija, Perović, Ivana, Zakić, Dimitrije, Antonijević, Dragi, "Development of low carbon and energy-efficient geopolymer-based paving blocks" in Science of Sintering, no. InPress (2023):59,
https://doi.org/10.2298/SOS231009059J . .

TY  - JOUR
AU  - Topalić-Trivunović, Ljiljana
AU  - Savić, Aleksandar
AU  - Petrović, Rada
AU  - Bodroža, Darko
AU  - Grujić, Dragana
AU  - Mitrić, Miodrag
AU  - Obrenović, Zoran
AU  - Gajić, Dragana
AU  - Imamović, Mugdin
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11942
AB  - Direct application of heavy metals as antibacterial agents can cause skin irritations and discoloration of the tissue and it can result in short-term applicability. One of the ways to solve these problems is to immobilize these agents on bentonite. Treatment of textile materials with such activated bentonite for use in various branches of industry has attracted the attention of many researchers in recent years. The objective of the present study was to develop a potential use of Cu- and Zn-modified bentonites as antibacterial finishing agents for two textile materials, non-woven textile (NT) and knitted fabric (PL). The bentonite samples were characterized using ED-XRF (energy dispersive X-ray fluorescence spectrometry), XRPD (X-ray powder diffraction), SEM (scanning electron microscopy), FTIR (Fourier-transform infrared spectroscopy), and BET (N2 adsorption-desorption) analyses. SiO2 and Al2O3 oxides were the main components of all bentonite samples indicated by ED-XRF analysis, while the XRPD analysis confirmed that the natural bentonite (NB) consisted of montmorillonite (Mnt) as the dominant mineral (peaks at 6.94, 19.94, 35.09, and 54.09°2θ) and small amounts of quartz and calcite. A reduction in the basal plane spacing, d 001, of Mnt occurred in Cu/Zn-B1, Cu/Zn-B3, and CuB, while in Cu/Zn-B2 and ZnB the basal spacing increased. Also, the size and form of particles and porosity changed, which was confirmed by the BET analysis. Modified bentonite samples experienced a reduction in the specific surface area and total pore volume, as well as movement of the middle mesopore diameter toward the larger diameters. The Zn-modified bentonite demonstrated a greater antibacterial effect on Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus cereus than Cu- and Na-modified bentonite samples with a MIC (minimum inhibitory concentration) of 0.94 mg/mL, while among Cu/Zn bentonite samples, Cu/Zn-B2 had the strongest antibacterial effect (MIC 0.47 mg/mL). Cu/Zn-B2 was integrated on NT and PL using a screen printing method and showed good antibacterial activity. The printed NT showed better activity than printed PL, and increasing the concentration of applied Cu/Zn-B2 also increased the antibacterial properties.
T2  - Clays and Clay Minerals
T1  - Antibacterial finishing of textile materials using modified bentonite
DO  - 10.1007/s42860-023-00258-0
ER  - 

@article{
author = "Topalić-Trivunović, Ljiljana and Savić, Aleksandar and Petrović, Rada and Bodroža, Darko and Grujić, Dragana and Mitrić, Miodrag and Obrenović, Zoran and Gajić, Dragana and Imamović, Mugdin",
year = "2023",
abstract = "Direct application of heavy metals as antibacterial agents can cause skin irritations and discoloration of the tissue and it can result in short-term applicability. One of the ways to solve these problems is to immobilize these agents on bentonite. Treatment of textile materials with such activated bentonite for use in various branches of industry has attracted the attention of many researchers in recent years. The objective of the present study was to develop a potential use of Cu- and Zn-modified bentonites as antibacterial finishing agents for two textile materials, non-woven textile (NT) and knitted fabric (PL). The bentonite samples were characterized using ED-XRF (energy dispersive X-ray fluorescence spectrometry), XRPD (X-ray powder diffraction), SEM (scanning electron microscopy), FTIR (Fourier-transform infrared spectroscopy), and BET (N2 adsorption-desorption) analyses. SiO2 and Al2O3 oxides were the main components of all bentonite samples indicated by ED-XRF analysis, while the XRPD analysis confirmed that the natural bentonite (NB) consisted of montmorillonite (Mnt) as the dominant mineral (peaks at 6.94, 19.94, 35.09, and 54.09°2θ) and small amounts of quartz and calcite. A reduction in the basal plane spacing, d 001, of Mnt occurred in Cu/Zn-B1, Cu/Zn-B3, and CuB, while in Cu/Zn-B2 and ZnB the basal spacing increased. Also, the size and form of particles and porosity changed, which was confirmed by the BET analysis. Modified bentonite samples experienced a reduction in the specific surface area and total pore volume, as well as movement of the middle mesopore diameter toward the larger diameters. The Zn-modified bentonite demonstrated a greater antibacterial effect on Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus cereus than Cu- and Na-modified bentonite samples with a MIC (minimum inhibitory concentration) of 0.94 mg/mL, while among Cu/Zn bentonite samples, Cu/Zn-B2 had the strongest antibacterial effect (MIC 0.47 mg/mL). Cu/Zn-B2 was integrated on NT and PL using a screen printing method and showed good antibacterial activity. The printed NT showed better activity than printed PL, and increasing the concentration of applied Cu/Zn-B2 also increased the antibacterial properties.",
journal = "Clays and Clay Minerals",
title = "Antibacterial finishing of textile materials using modified bentonite",
doi = "10.1007/s42860-023-00258-0"
}

Topalić-Trivunović, L., Savić, A., Petrović, R., Bodroža, D., Grujić, D., Mitrić, M., Obrenović, Z., Gajić, D.,& Imamović, M.. (2023). Antibacterial finishing of textile materials using modified bentonite. in Clays and Clay Minerals.
https://doi.org/10.1007/s42860-023-00258-0

Topalić-Trivunović L, Savić A, Petrović R, Bodroža D, Grujić D, Mitrić M, Obrenović Z, Gajić D, Imamović M. Antibacterial finishing of textile materials using modified bentonite. in Clays and Clay Minerals. 2023;.
doi:10.1007/s42860-023-00258-0 .

Topalić-Trivunović, Ljiljana, Savić, Aleksandar, Petrović, Rada, Bodroža, Darko, Grujić, Dragana, Mitrić, Miodrag, Obrenović, Zoran, Gajić, Dragana, Imamović, Mugdin, "Antibacterial finishing of textile materials using modified bentonite" in Clays and Clay Minerals (2023),
https://doi.org/10.1007/s42860-023-00258-0 . .