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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (7): 2347-2356.DOI: 10.16552/j.cnki.issn1001-1625.2026.0031

• 资源综合利用 • 上一篇    下一篇

湿磨碳化钢渣对磷建筑石膏性能及微观结构的影响

金子豪(), 邹自勇, 贺行洋(), 苏英, 陈淑琴   

  1. 湖北工业大学土木建筑与环境学院,武汉 430068
  • 收稿日期:2026-01-11 修订日期:2026-02-10 出版日期:2026-07-15 发布日期:2026-08-13
  • 通信作者: 贺行洋,博士,教授。E-mail:hexycn@163.com
  • 作者简介:金子豪(1993—),男,博士,副教授。主要从事工业副产石膏的研究。E-mail:jzh19930113@163.com
  • 基金资助:
    国家自然科学基金(52502020);湖北省重点研发计划(2024BCB089)

Effect of Wet Grinding Carbonized Steel Slag on Properties and Microstructure of Beta-Hemihydrate Phosphogypsum

JIN Zihao(), ZOU Ziyong, HE Xingyang(), SU Ying, CHEN Shuqin   

  1. School of Civil Architecture and Environment,Hubei University of Technology,Wuhan 430068,China
  • Received:2026-01-11 Revised:2026-02-10 Published:2026-07-15 Online:2026-08-13

摘要:

面向建材低碳转型及固废资源化利用需求,本文提出采用湿磨碳化钢渣改性低碳磷建筑石膏,构建新型高性能石膏胶凝材料。结果表明,经过碳化处理的钢渣,对磷建筑石膏的工作性能与耐水性能均有明显的改善作用,且可通过增加湿磨碳化时间降低其对力学性能的劣化作用。碳化60 min钢渣的综合效果最优,在保证工作性能与力学性能的同时,使磷建筑石膏耐水性能得到了较大的改善。体系中形成了CaCO3与二水硫酸钙(CaSO4·2H2O)“双晶相”复合结构,对石膏力学性能有一定的负面作用,但起到了保护石膏晶体结构、增加其耐水性能的作用。

关键词: 磷建筑石膏, 碳化钢渣, 工作性能, 力学性能, 微观结构

Abstract:

This study addressed the needs of low-carbon development in building materials and solid waste resource utilization by proposing the use of wet grinding carbonized steel slag-modified low-carbon beta-hemihydrate phosphogypsum to develop a novel high-performance low-carbon gypsum cementitious material. Results demonstrate that wet grinding carbonized steel slag significantly improves both the working properties and water resistance of beta-hemihydrate phosphogypsum, with mechanical properties degradation mitigated by extended carbonization time. The system carbonized for 60 min exhibits optimal comprehensive performance, maintaining working and mechanical properties while achieving substantial enhancement in water resistance. The formation of “dual-phase” composite structures between CaCO3 and calcium sulfate dihydrate (CaSO4·2H2O) exerts a certain negative effect on gypsum’s mechanical properties, yet effectively protects its crystal structure and enhances water resistance.

Key words: beta-hemihydrate phosphogypsum, carbonized steel slag, working property, mechanical property, microstructure

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