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Abstract The purpose of this paper is to study the effect of composite activator on multi-component solid waste cementitious materials. Water glass composite Al2(SO4)3 and gypsum composite Ca(OH)2 activator were used to prepare multi-component solid waste cementitious materials, and their effects on compressive strength and microstructure were analyzed. The results show that compared with single activator, the combination of two activators is more conducive to improving the compressive strength of multi-component solid waste cementitious materials. Its hydration products are composed of quartz, calcite, orthorhombic calcium zeolite, CaSO4, Na2SO4, C-S-H, a small amount of AFt and so on.
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Published: 29 September 2025
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2025, Vol. 0 
