硅酸盐通报2025，Vol.44Issue(12)：4395-4405,11.DOI:10.16552/j.cnki.issn1001-1625.2025.0618
偏高岭土基地聚合物改良土的冻胀融沉特性研究
Frost Heave and Thaw Settlement Characteristics of Metakaolin-Based Geopolymer Modified Soil
FAN Houchao 1ZHU Jie 2WU Haibo 1ZHANG Zhonglun 1YAN Zigang 1LI Lin 1TANG Wencheng2
作者信息
- 1. No.3 Engineering Company of China Railway No.8 Engineering Group Co.,Ltd.,Guiyang 550000,China
- 2. School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China
- 折叠
摘要
Abstract
Geopolymer is a kind of inorganic cementitious material formed by the process of depolymerization,monomer reconstruction and polycondensation reactions under alkali activation with solid industrial waste rich in aluminosilicate as precursor,which can be used to replace cement in treating weak soil layers.In order to study the frost heave and thaw settlement characteristics of geopolymer modified soil,metakaolin-based geopolymer was used to treat marine sedimentary silty clay in Fuzhou.The frost heave and thaw settlement tests of the modified soil were conducted under different levels of multiple factors,including curing age,cold end temperature,activator modulus,sodium silicate to metakaolin(S-MK)mass ratio and geopolymer content.The results show that the frost heave and thaw settlement characteristics of the modified soil are significantly weakened.The frost heave rate and thaw settlement coefficient decrease with the increase of curing age and geopolymer content,and improve with the increase of activator modulus and S-MK mass ratio.When the cold end temperature decreases,both of them reduce linearly.Through comparison,it is found that the frost heave rate and thaw settlement coefficient of geopolymer modified soil are significantly lower than those of cement modified soil under the same geopolymer content.关键词
地聚合物/偏高岭土/改良土/粉质黏土/冻胀率/融沉系数Key words
geopolymer/metakaolin/modified soil/silty clay/frost heave rate/thaw settlement coefficient分类
建筑与水利引用本文复制引用
FAN Houchao,ZHU Jie,WU Haibo,ZHANG Zhonglun,YAN Zigang,LI Lin,TANG Wencheng..偏高岭土基地聚合物改良土的冻胀融沉特性研究[J].硅酸盐通报,2025,44(12):4395-4405,11.
