Effect of Slag on Expansion of Alite-Calcium Barium Sulphoaluminate Cement

Shou De  Wang; Ling Chao  Lu; Xin Cheng

doi:10.4028/www.scientific.net/AMR.306-307.1003

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 306-307Effect of Slag on Expansion of Alite-Calcium...

Effect of Slag on Expansion of Alite-Calcium Barium Sulphoaluminate Cement

Abstract:

The influences of slag on the expansion of alite-calcium barium sulphoaluminate cement were studied. The experimental results indicated that the formation of ettringite and Ba-bearing ettringite are the main expansion sources of alite-calcium barium sulphoaluminate cement clinker with only gypsum. In addition to the ettringite and Ba-bearing ettringite, the Mg(OH)₂ crystal formation was another probably the expansion source. The expansion rate of alite-calcium barium sulphoaluminate cement increased with slag content rising. Even if the content of slag in cement arrived at 20%, the soundness of alite-calcium sulphoaluminate cement its expansion was still in the safety range.

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Periodical:

Advanced Materials Research (Volumes 306-307)

Pages:

1003-1006

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.306-307.1003

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Online since:

August 2011

Authors:

Shou De Wang, Ling Chao Lu, Xin Cheng

Keywords:

Alite, Calcium Barium Sulphoaluminate, Ettringite, Expansion, Slag

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