The Strength and Microstructure of High Content FGD Gypsum-Fly Ash-Ground Granulated Blast Furnace Slag Composite Binder

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In this paper, FGD gypsum mixed with fly ash (FA) and ground granulated blast furnace slag (GGBFS) was used as a composite binder. The strength experiments of range analysis and analysis of variance (ANOVA) showed that the optimal proportion of FGD gypsum, FA and GGBFS was 6:3:4. The study of microstructure of hardened paste proved that the hydration product was mainly C-S-H gels and ettringite, and some ettringite crystals grew from C-S-H gels.

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1514-1518

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July 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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