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A platform for research: civil engineering, architecture and urbanism
Chloride binding and mobility in sodium carbonate-activated slag pastes and mortars
Abstract This study evaluates the chloride binding capacity and the migration of chloride in sodium carbonate-activated slag cements and mortars. The effect on chloride mobility and binding of adding a calcined layered double hydroxide (CLDH) to the binder mix was also assessed. Significantly improved durability characteristics can be achieved for sodium carbonate-activated slag mortars by the addition of small fractions of CLDH, as a consequence of a higher degree of reaction, higher chloride binding capacity, and the refined pore structures present in these modified materials, in comparison with alkali-activated cements produced without CLDH. The addition of CLDH enables the production of sodium carbonate-activated slag cements with notably reduced chloride ingress compared to silicate activated slag cements.
Chloride binding and mobility in sodium carbonate-activated slag pastes and mortars
Abstract This study evaluates the chloride binding capacity and the migration of chloride in sodium carbonate-activated slag cements and mortars. The effect on chloride mobility and binding of adding a calcined layered double hydroxide (CLDH) to the binder mix was also assessed. Significantly improved durability characteristics can be achieved for sodium carbonate-activated slag mortars by the addition of small fractions of CLDH, as a consequence of a higher degree of reaction, higher chloride binding capacity, and the refined pore structures present in these modified materials, in comparison with alkali-activated cements produced without CLDH. The addition of CLDH enables the production of sodium carbonate-activated slag cements with notably reduced chloride ingress compared to silicate activated slag cements.
Chloride binding and mobility in sodium carbonate-activated slag pastes and mortars
Ke, Xinyuan (author) / Bernal, Susan A. (author) / Hussein, Oday H. (author) / Provis, John L. (author)
Materials and Structures ; 50 ; 1-13
2017-12-01
13 pages
Article (Journal)
Electronic Resource
English
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