碱激发地质聚合物固化软土的研究进展

摘要/Abstract

摘要： 软土地基处理是工程界公认的有较高风险的工程领域,传统软土固化中大量使用硅酸盐水泥,不仅消耗自然资源,还会对环境产生不良影响,使用环境友好型碱激发地质聚合物替代传统硅酸盐水泥越来越受到国内外学者的重视。论文基于国内外已有研究成果,从碱激发地质聚合物固化土发展历史、碱激发地质聚合物种类、碱激发地质聚合物反应机理、碱激发地质聚合物固化土力学特性和各类性能等方面进行研究进展的综述分析,重点谈论地质聚合物处理软土的力学特性,并对不同碱激发地质聚合物在软土地基加固中抗渗性能、抗冻融性能、抗腐蚀性能等进行分析,对碱激发地质聚合物在软土地基加固中的应用进行系统梳理和展望,以期引导和提升碱激发地质聚合物在软土地基加固中的应用,实现我国地基加固可持续发展。

关键词: 地质聚合物, 碱激发, 软土, 固化, 水泥土, 力学特性, 耐久性

Abstract: Soft soil foundation treatment is an engineering field with high risk recognized by the engineering community. The large amount of Portland cement used in traditional soft soil stabilized not only consumes natural resources, but also has adverse effects on the environment. The use of environment friendly alkali-activated geopolymers to replace traditional Portland cement has attracted more and more attention. Based on the existing research results at home and abroad, the research progress from the historical development of alkali-activated geopolymer solidified soil, types of alkali-activated geopolymers, reaction mechanism of alkali-activated geopolymer, mechanical properties and various properties of alkali-activated geopolymer solidified soil were summarized and analyzed. The mechanical properties of soft soil treated by geopolymer were mainly discussed. At the same time, the impermeability, freeze-thaw resistance and corrosion resistance of different alkali-activated geopolymers in soft soil foundation reinforcement were also analyzed and studied. The application in soft soil foundation reinforcement is systematically reviewed and prospected, in order to guide and improve the application of alkali-activated geopolymers in soft soil foundation reinforcement, and realize the sustainable development of foundation reinforcement in China.

Key words: geopolymer, alkali-activation, soft soil, stabilization, cement soil, mechanical property, durability

中图分类号:

TU472

刘景锦, 罗昊鹏, 雷华阳, 郑刚, 程雪松. 碱激发地质聚合物固化软土的研究进展[J]. 硅酸盐通报, 2023, 42(2): 565-574.

LIU Jingjin, LUO Haopeng, LEI Huayang, ZHENG Gang, CHENG Xuesong. Research Progress on Application of Alkali-Activated Geopolymers to Stabilize Soft Soil[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(2): 565-574.

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