Research Development on Influencing Factors of Performances and Gel Products in Fly Ash-Based Geopolymer Material

Abstract

Abstract: Fly ash-based geopolymer materials are favored in the building material industry owing to the advantages of green and low-carbon. Silica-aluminum precursors, alkali-activators and water are the basic components for geopolymeric reaction. However, the gel products in fly ash-based geopolymer material are changing with additional calcium content in system. In this paper, based on the formation and advantage of geopolymer, the advantage of fly ash was analyzed as silica-aluminum precursor. Also, the influences of activator ions, curing conditions and calcium-components were emphasized on the performances of modified fly ash-based geopolymer material. Furthermore, the research developments of gel products and reaction mechanisms were reviewed for fly ash-based geopolymer materials. Currently, the calcium-containing solid wastes tend to be utilized as the inorganic additives to improve the performances of modified fly ash-based geopolymer materials. Therefore, clarifying gel products and reaction mechanisms will provide the theoretical guidance for the performance optimization of fly ash-based geopolymer materials.

Key words: fly ash, geopolymer, calcium-component, curing condition, gel product, reaction mechanism

CLC Number:

TU526

ZHAO Xianhui, WANG Haoyu, ZHOU Boyu, GAO Han. Research Development on Influencing Factors of Performances and Gel Products in Fly Ash-Based Geopolymer Material[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(3): 867-876.

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