TY  - CONF
AU  - Tanasijević, Gordana
AU  - Provis, John L.
AU  - Carević, Vedran
AU  - Ignjatović, Ivan
AU  - Komljenović, Miroslav M
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2218
AB  - In this paper the effect of accelerated carbonation process on the effectiveness of immobilization of cesium
(simulated radioactive and toxic waste) in the alkali-activated blast furnace slag (AABFS) matrix was studied. Blast
furnace slag (BFS) was contaminated with 2% and 5% Cs (with respect to the dry BFS mass) and alkali-activated with
sodium silicate solution, while the AABFS samples were cured sealed in plastic envelopes for 24 h at 95oC. First series of
AABFS samples were exposed to accelerated carbonation (open curing), while the second (reference) series of AABFS
samples left to aging (also sealed) at room temperature until testing. Thereafter AABFS samples were subjected to a
short-term (five-day) leaching tests according to the ANSI/ANS-16.1-2003 standard. The strength of AABFS mortars were
tested according to the SRPS EN 196-1 standard, while the carbonation was confirmed by phenolphthalein test and SEM
analysis. The diffusion coefficient (D) and non-dimensional leachability index (L) of cesium leached from AABFS were
calculated according to the ANSI/ANS-16.1–2003 standard. A correlation between the accelerated carbonation process
and the effectiveness of immobilization of cesium in AABFS was established.
PB  - Slovenian National Building and Civil Engineering Institute (ZAG)
C3  - Proceedings of the 2nd International Conference on Construction Materials for a Sustainable Future
T1  - Effect of accelerated carbonation on the efficiency of immobilization of Cs in the alkaliactivated blast furnace slag
EP  - 311
SP  - 303/35
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2218
ER  - 

@conference{
author = "Tanasijević, Gordana and Provis, John L. and Carević, Vedran and Ignjatović, Ivan and Komljenović, Miroslav M",
year = "2021",
abstract = "In this paper the effect of accelerated carbonation process on the effectiveness of immobilization of cesium
(simulated radioactive and toxic waste) in the alkali-activated blast furnace slag (AABFS) matrix was studied. Blast
furnace slag (BFS) was contaminated with 2% and 5% Cs (with respect to the dry BFS mass) and alkali-activated with
sodium silicate solution, while the AABFS samples were cured sealed in plastic envelopes for 24 h at 95oC. First series of
AABFS samples were exposed to accelerated carbonation (open curing), while the second (reference) series of AABFS
samples left to aging (also sealed) at room temperature until testing. Thereafter AABFS samples were subjected to a
short-term (five-day) leaching tests according to the ANSI/ANS-16.1-2003 standard. The strength of AABFS mortars were
tested according to the SRPS EN 196-1 standard, while the carbonation was confirmed by phenolphthalein test and SEM
analysis. The diffusion coefficient (D) and non-dimensional leachability index (L) of cesium leached from AABFS were
calculated according to the ANSI/ANS-16.1–2003 standard. A correlation between the accelerated carbonation process
and the effectiveness of immobilization of cesium in AABFS was established.",
publisher = "Slovenian National Building and Civil Engineering Institute (ZAG)",
journal = "Proceedings of the 2nd International Conference on Construction Materials for a Sustainable Future",
title = "Effect of accelerated carbonation on the efficiency of immobilization of Cs in the alkaliactivated blast furnace slag",
pages = "311-303/35",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2218"
}

Tanasijević, G., Provis, J. L., Carević, V., Ignjatović, I.,& Komljenović, M. M.. (2021). Effect of accelerated carbonation on the efficiency of immobilization of Cs in the alkaliactivated blast furnace slag. in Proceedings of the 2nd International Conference on Construction Materials for a Sustainable Future
Slovenian National Building and Civil Engineering Institute (ZAG)., 1, 303/35-311.
https://hdl.handle.net/21.15107/rcub_rimsi_2218

Tanasijević G, Provis JL, Carević V, Ignjatović I, Komljenović MM. Effect of accelerated carbonation on the efficiency of immobilization of Cs in the alkaliactivated blast furnace slag. in Proceedings of the 2nd International Conference on Construction Materials for a Sustainable Future. 2021;1:303/35-311.
https://hdl.handle.net/21.15107/rcub_rimsi_2218 .

Tanasijević, Gordana, Provis, John L., Carević, Vedran, Ignjatović, Ivan, Komljenović, Miroslav M, "Effect of accelerated carbonation on the efficiency of immobilization of Cs in the alkaliactivated blast furnace slag" in Proceedings of the 2nd International Conference on Construction Materials for a Sustainable Future, 1 (2021):303/35-311,
https://hdl.handle.net/21.15107/rcub_rimsi_2218 .

TY  - CONF
AU  - Tanasijević, Gordana
AU  - Ivanović, Tijana
AU  - Provis, John L.
AU  - Komljenovic, Miroslav
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2563
AB  - Leaching is a phenomenon of fundamental interest in low-level radioactive waste disposal, and the
measurement of the leaching resistance of different wasteforms is very important for proper waste
management. In general, alkali-activated binders (AABs) can be considered as a sustainable solution
for safe immobilization of hazardous wastes containing different toxic or radioactive elements.
In this paper, the leaching resistance of AAB based on blast furnace slag (BFS), contaminated with 2%
cesium (i.e., solidified simulated low-level radioactive waste), was investigated according to the
ANSI/ANS-16.1-2003 standard procedure.
Based on the leaching results obtained for different elements, in particular for Cs, Si, Al, Ca, Na, and
K, it was concluded that the short (up to 5 days) semi-dynamic process of leaching from AAB can be
divided into two distinct stages: a) fast leaching of non-bound or loosely bound ions during the initial 24
hours, which occurred mostly between the surface of AAB and the leachant, and b) slower leaching in
the later stages of the experiment, which was controlled by diffusion of ions through AAB matrix.
By calculating the diffusion coefficient (D) and the leachability index (L) of cesium, it was also
concluded that AAB based on blast furnace slag, synthesized under the given experimental conditions,
can be considered as a potentially efficient matrix for immobilizing up to 2% cesium in hazardous
wastes.
PB  - Research Institute of Binding Materials Prague Ltd. Na Cikánce 2 153 00 Prague 5 – Radotín Czech Republic
C3  - 15th International Congress on the Chemistry of Cement
T1  - Leaching resistance of alkali-activated binder contaminated with cesium
SP  - 2622/801
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2563
ER  - 

@conference{
author = "Tanasijević, Gordana and Ivanović, Tijana and Provis, John L. and Komljenovic, Miroslav",
year = "2019",
abstract = "Leaching is a phenomenon of fundamental interest in low-level radioactive waste disposal, and the
measurement of the leaching resistance of different wasteforms is very important for proper waste
management. In general, alkali-activated binders (AABs) can be considered as a sustainable solution
for safe immobilization of hazardous wastes containing different toxic or radioactive elements.
In this paper, the leaching resistance of AAB based on blast furnace slag (BFS), contaminated with 2%
cesium (i.e., solidified simulated low-level radioactive waste), was investigated according to the
ANSI/ANS-16.1-2003 standard procedure.
Based on the leaching results obtained for different elements, in particular for Cs, Si, Al, Ca, Na, and
K, it was concluded that the short (up to 5 days) semi-dynamic process of leaching from AAB can be
divided into two distinct stages: a) fast leaching of non-bound or loosely bound ions during the initial 24
hours, which occurred mostly between the surface of AAB and the leachant, and b) slower leaching in
the later stages of the experiment, which was controlled by diffusion of ions through AAB matrix.
By calculating the diffusion coefficient (D) and the leachability index (L) of cesium, it was also
concluded that AAB based on blast furnace slag, synthesized under the given experimental conditions,
can be considered as a potentially efficient matrix for immobilizing up to 2% cesium in hazardous
wastes.",
publisher = "Research Institute of Binding Materials Prague Ltd. Na Cikánce 2 153 00 Prague 5 – Radotín Czech Republic",
journal = "15th International Congress on the Chemistry of Cement",
title = "Leaching resistance of alkali-activated binder contaminated with cesium",
pages = "2622/801",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2563"
}

Tanasijević, G., Ivanović, T., Provis, J. L.,& Komljenovic, M.. (2019). Leaching resistance of alkali-activated binder contaminated with cesium. in 15th International Congress on the Chemistry of Cement
Research Institute of Binding Materials Prague Ltd. Na Cikánce 2 153 00 Prague 5 – Radotín Czech Republic., 2622/801.
https://hdl.handle.net/21.15107/rcub_rimsi_2563

Tanasijević G, Ivanović T, Provis JL, Komljenovic M. Leaching resistance of alkali-activated binder contaminated with cesium. in 15th International Congress on the Chemistry of Cement. 2019;:2622/801.
https://hdl.handle.net/21.15107/rcub_rimsi_2563 .

Tanasijević, Gordana, Ivanović, Tijana, Provis, John L., Komljenovic, Miroslav, "Leaching resistance of alkali-activated binder contaminated with cesium" in 15th International Congress on the Chemistry of Cement (2019):2622/801,
https://hdl.handle.net/21.15107/rcub_rimsi_2563 .