Performance of Belite-Barium Calcium Sulphoaluminate Cement Prepared by Substituting Fly Ash for Clay

Pi Qi Zhao; Wen Zong; Shou De Wang; Gui Yun Wang; Ling Chao Lu

doi:10.4028/www.scientific.net/AMR.306-307.1066

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 306-307Performance of Belite-Barium Calcium...

Performance of Belite-Barium Calcium Sulphoaluminate Cement Prepared by Substituting Fly Ash for Clay

Abstract:

The mineral structure and performance of belite-barium calcium sulphoaluminate cement clinkers were investigated by petrographic analysis, X-ray diffraction and scanning electron microscopy. The experimental results showed that the minerals of calcium barium sulphoaluminate (C_2.75B_1.25A₃) and C₂S could coexist in the belite-barium calcium sulphoaluminate cement clinker, and the optimal sintering temperature was 1380°C, at which, more C_2.75B_1.25A₃was formed, well developed and also evenly distributed in the optimal sintering condition. If the sintering temperature exceeded 1380°C, the decomposition of C_2.75B_1.25A₃ would speed up and the C₃S became inactivate for its excessive development. In the optimal sintering condition, the compressive strength of the prepared cement at 3, 7, 28 d were 32.6, 47.9, 88.5 MPa respectively, which exhibited excellent mechanical properties.

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Periodical:

Advanced Materials Research (Volumes 306-307)

Pages:

1066-1070

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.306-307.1066

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Online since:

August 2011

Authors:

Pi Qi Zhao, Wen Zong, Shou De Wang, Gui Yun Wang, Ling Chao Lu

Keywords:

Barium Calcium Sulphoaluminate, Belite, Fly Ash (FA), Sintering Temper

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