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 .