TY  - CONF
AU  - Komljenović, Miroslav M
AU  - Baščarević, Zvezdana
AU  - Nikolic, Violeta
AU  - Džunuzović, Nataša
AU  - Ršumović, Mihailo
AU  - Rosić, Aleksandra
PY  - 2011
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2923
AB  - This paper investigates the resistance of alkali-activated binder to leaching. This type of binder was obtained by alkali-activation of blast-furnace slag. The slag was activated by aqueous solution of sodium silicate. The resistance of alkali-activated slag to leaching was studied on mortar prisms, with the use of an accelerated test with concentrated solution (50%) of ammonium nitrate at 20 ºC. Strength of mortar was determined after 30, 60, and 90 days of exposure to ammonium nitrate solution. Portland-slag cement (CEM II/А-Ѕ 42.5R) was used as the reference material.
After 30 days of exposure to ammonium nitrate solution the strength of alkali-activated slag, with respect to control samples, was slightly reduced (about 5%). At the same time the reference Portland-slag cement sample showed drastic strength reduction (over 50%). After 90 days of exposure the reduction of Portland-slag cement strength was over 80%. In the case of the reference cement sample, significant loss of portlandite, i.e. calcium, was established by X-ray and scanning electron microscopy (SEM/EDS) analysis. The loss of calcium lead to a progressive decalcification of calcium–silicate–hydrates (C–S–H), drastic reduction of strength and destruction of the samples studied. In comparison with the reference cement sample decalcification of alkali-activated slag was a very slow process, whereby a minor change in the structure was observed.
Based on the results of investigation it can be concluded that alkali-activated slag has showed high resistance to leaching
PB  - Ministerio de Ciencia e Innovacion, Spain & Instituto Eduardo Torroja
C3  - XIII International Congress on the Chemistry of Cement ICCC
T1  - Mechanical and Microstructural Changes of Alkali-Activated Binder Due to the Leaching Process
SP  - pdf doc 272-1-7
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2923
ER  - 

@conference{
author = "Komljenović, Miroslav M and Baščarević, Zvezdana and Nikolic, Violeta and Džunuzović, Nataša and Ršumović, Mihailo and Rosić, Aleksandra",
year = "2011",
abstract = "This paper investigates the resistance of alkali-activated binder to leaching. This type of binder was obtained by alkali-activation of blast-furnace slag. The slag was activated by aqueous solution of sodium silicate. The resistance of alkali-activated slag to leaching was studied on mortar prisms, with the use of an accelerated test with concentrated solution (50%) of ammonium nitrate at 20 ºC. Strength of mortar was determined after 30, 60, and 90 days of exposure to ammonium nitrate solution. Portland-slag cement (CEM II/А-Ѕ 42.5R) was used as the reference material.
After 30 days of exposure to ammonium nitrate solution the strength of alkali-activated slag, with respect to control samples, was slightly reduced (about 5%). At the same time the reference Portland-slag cement sample showed drastic strength reduction (over 50%). After 90 days of exposure the reduction of Portland-slag cement strength was over 80%. In the case of the reference cement sample, significant loss of portlandite, i.e. calcium, was established by X-ray and scanning electron microscopy (SEM/EDS) analysis. The loss of calcium lead to a progressive decalcification of calcium–silicate–hydrates (C–S–H), drastic reduction of strength and destruction of the samples studied. In comparison with the reference cement sample decalcification of alkali-activated slag was a very slow process, whereby a minor change in the structure was observed.
Based on the results of investigation it can be concluded that alkali-activated slag has showed high resistance to leaching",
publisher = "Ministerio de Ciencia e Innovacion, Spain & Instituto Eduardo Torroja",
journal = "XIII International Congress on the Chemistry of Cement ICCC",
title = "Mechanical and Microstructural Changes of Alkali-Activated Binder Due to the Leaching Process",
pages = "pdf doc 272-1-7",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2923"
}

Komljenović, M. M., Baščarević, Z., Nikolic, V., Džunuzović, N., Ršumović, M.,& Rosić, A.. (2011). Mechanical and Microstructural Changes of Alkali-Activated Binder Due to the Leaching Process. in XIII International Congress on the Chemistry of Cement ICCC
Ministerio de Ciencia e Innovacion, Spain & Instituto Eduardo Torroja., pdf doc 272-1-7.
https://hdl.handle.net/21.15107/rcub_rimsi_2923

Komljenović MM, Baščarević Z, Nikolic V, Džunuzović N, Ršumović M, Rosić A. Mechanical and Microstructural Changes of Alkali-Activated Binder Due to the Leaching Process. in XIII International Congress on the Chemistry of Cement ICCC. 2011;:pdf doc 272-1-7.
https://hdl.handle.net/21.15107/rcub_rimsi_2923 .

Komljenović, Miroslav M, Baščarević, Zvezdana, Nikolic, Violeta, Džunuzović, Nataša, Ršumović, Mihailo, Rosić, Aleksandra, "Mechanical and Microstructural Changes of Alkali-Activated Binder Due to the Leaching Process" in XIII International Congress on the Chemistry of Cement ICCC (2011):pdf doc 272-1-7,
https://hdl.handle.net/21.15107/rcub_rimsi_2923 .