地质聚合物固化土研究现状及展望  

State-of-the-art research and prospect of geopolymer solidified soil

作　　者：罗正东[1] 章本本 苏永华[2] 蒋波 李政阳 LUO Zhengdong;ZHANG Benben;SU Yonghua;JIANG Bo;LI Zhengyang(College of Civil Engineering and Mechanics,Xiangtan University,Xiangtan 411105,Hunan,P.R.China;College of Civil Engineering,Hunan University,Changsha 410082,P.R.China)

机构地区：[1]湘潭大学土木工程与力学学院,湖南湘潭411105 [2]湖南大学土木工程学院,长沙410082

出　　处：《土木与环境工程学报（中英文）》2024年第6期31-43,共13页Journal of Civil and Environmental Engineering

基　　金：国家自然科学基金(51909086);湖南省教育厅优秀青年项目(21B0123);中国水利水电科学研究院水利部水工程建设与安全重点实验室开放研究基金(202109)。

摘　　要：随着对地质聚合物研究的不断深入,将其作为固化剂应用于土壤固化领域的研究受到了广泛关注。地质聚合物作为一种新兴的土壤固化剂,是一种以富硅铝酸盐矿物为前驱体,在碱激发剂作用下形成的绿色无机胶凝材料,具有力学性能良好、耐久性优异以及低碳环保等优点,能够有效克服水泥/石灰等传统土壤固化剂能耗高、污染大以及耐久性差等缺点,被普遍认为是传统土壤固化剂的理想替代品。为明确地质聚合物对土壤的加固机理和增强效果,回顾近年来地质聚合物固化土的研究进展,介绍地质聚合物固化土的反应机理,详述不同因素对地质聚合物固化土无侧限抗压强度和抗剪强度等力学性能的影响,讨论地质聚合物固化土在冻融循环、干湿循环以及化学离子侵蚀等作用下的耐久性,并对地质聚合物固化土技术未来发展方向进行展望。With fundamental research on geopolymer,the study of using geopolymer as solidification agent in the field of soil stabilization has received extensive attention.Geopolymer,as a new soil solidification agent,is a kind of green inorganic cementitious material formed by aluminosilicate-rich minerals as precursors under the action of alkali activators.It is equipped with the advantages of good mechanical properties,great durability,low carbon and environment friendly,etc.It can effectively overcome the disadvantages of high energy consumption,high pollution and poor durability of traditional soil solidification agents such as cement or lime,and is generally considered as an ideal substitute for traditional soil solidification agents.In order to clarify the solidification mechanism and reinforcement effect of geopolymers on soil,the research progress of geopolymer solidified soil in recent years is reviewed in this paper.Firstly,the reaction mechanism of geopolymer solidified soil is introduced;secondly,the influence of different factors on the mechanical properties such as unconfined compressive strength and shear strength is described in detail;thirdly,the durability of geopolymer solidified soil under freeze-thaw cycle,dry-wet cycle and chemical ion erosion is discussed;finally,the future study of geopolymer solidified soil technique is prospected.

关 键 词：地质聚合物 固化土 土壤固化剂 反应机理 力学性能 耐久性 

分 类 号：TU472.5[建筑科学—结构工程]