The Role of Fly Ash in the Granulated Blast Furnace Slag-Based Geopolymer

Cheng Xu Wu; Hua Jun Zeng

doi:10.4028/www.scientific.net/AMM.405-408.2760

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 405-408The Role of Fly Ash in the Granulated Blast...

The Role of Fly Ash in the Granulated Blast Furnace Slag-Based Geopolymer

Abstract:

Inorganic polymers using slag as cementitious materials have the advantage of a short setting time, high early strength, but the sensitivity of the reaction rate to temperature and the likelihood to subsequently crack, which leads to reduction of strength, limit its application. This article, by configuring different proportion of fly ash and slag, studied its dry shrinkage with the different kinds of activator, the effects of fly ash on the hydration heat release curves, differences of setting time and strength with different configuration, and then explored the effect of fly-ash in inorganic polymer. Experiments had shown that through rational configuration, the addition of fly ash can effectively reduce the rate of heat release and the amount of heat, meanwhile can solve the problem about short setting time of alkali-activated cementitious materials without reducing its strength.

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Periodical:

Applied Mechanics and Materials (Volumes 405-408)

Pages:

2760-2766

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.405-408.2760

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Online since:

September 2013

Authors:

Cheng Xu Wu*, Hua Jun Zeng

Keywords:

Dry Shrinkage, Fly Ash (FA), Hydration Heat, Setting Time, Strength

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* - Corresponding Author

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