Research Progress on Phosphogypsum-Based Solid Waste Alkali-Activated Cementitious Materials

doi:10.16552/j.cnki.issn1001-1625.2025.0754

Abstract

Abstract: The massive stockpiling of industrial solid waste phosphogypsum, and its associated environmental pollution have become severe challenges. Simultaneously, the high energy consumption and emissions of the traditional cement production increasingly conflicts with China's "Dual Carbon" strategic goals. Developing phosphogypsum-based solid waste alkali-activated cementitious materials to partially replace cement offers an effective pathway to simultaneously address these issues. In this paper, based on the physicochemical characteristics of phosphogypsum, systematically elucidates the cementation hardening mechanisms of phosphogypsum-based solid waste alkali-activated cementitious materials; reviews and compares the characteristics of representative phosphogypsum-based solid waste alkali-activated cementitious systems; and summarizes the current application status and future potential of these materials in engineering fields such as road base layers and fill applications. The research aims to provide theoretical support and technical references for producing high-performance, high-value-added, and environmentally friendly engineering materials from phosphogypsum.

Key words: phosphogypsum, alkali-activation, solid waste cementitious material, cementation hardening mechanism, engineering application

CLC Number:

TQ177

YANG Jingxian, MA Liping, HE Binbin, WU Zhangyu, SHE Wei. Research Progress on Phosphogypsum-Based Solid Waste Alkali-Activated Cementitious Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(11): 3934-3946.

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