Study on the Effect of Waste Gypsum on Hardening Paste Structure and Performances of Lime-Fly Ash

Jia Ying Sun; Yi Dong Xu

doi:10.4028/www.scientific.net/AMR.213.31

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Manufacturing of Biocompatible Implant Component Using Rapid Prototyping Technology
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Study on the Effect of Waste Gypsum on Hardening Paste Structure and Performances of Lime-Fly Ash
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 213Study on the Effect of Waste Gypsum on Hardening...

Study on the Effect of Waste Gypsum on Hardening Paste Structure and Performances of Lime-Fly Ash

Abstract:

Based on the experiments, the effect of waste gypsum on the formation of paste structure, the early strength and the stability of lime-fly ash is discussed in the article. As is shown by the results, the early strength of paste was improved by adding waste gypsum into lime-fly ash. The stability of lime-fly ash paste modified by waste gypsum could meet technical requirements when waste gypsum admixture was less than 40%. With the increase of hydration age, the number of ettringite (AFt) and C-S-H gel in paste would increase.