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Effect of Different Mineral Admixtures on Properties of Sulphoaluminate Cement

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Abstract:

Effects of superfine slag powder, fly ash and ultra-fine CaCO3 on compressive strength of sulphoaluminate cement were investigated. Cement hydration products were analyzed by using scanning electron microscopy (SEM). The results show that different fineness and additions of mineral admixture differ in compressive strength. When the amount of superfine slag powder, fly ash and ultra-fine CaCO3 are added by 10%, 10% and 3% (by weight), the compressive strength of the hardened paste of sulphoaluminate cement is highest, respectively. Meanwhile, it is concluded that the additions of superfine slag powder and ultra-fine CaCO3 facilitates hydration at early ages, while fly ash could accelerate hydration at later ages.

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Periodical:

Applied Mechanics and Materials (Volumes 174-177)

Pages:

1173-1176

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.174-177.1173

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Online since:

May 2012

Authors:

Rui Ma*, Xin Cheng, Chen Chen Gong, Shou De Wang, Ling Chao Lu

Keywords:

Fly Ash (FA), Strength, Sulphoaluminate Cement, Superfine Slag Powder, Ultra-Fine CaCO3

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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