土木与环境工程学报（中英文）2024，Vol.46Issue(6)：23-30,8.DOI:10.11835/j.issn.2096-6717.2022.080
阳离子半径对电化学法加固软黏土效果的影响试验研究
Experimental study on the influence of cationic radius on the effect of reinforcement of soft clay by electro-chemical treatment
摘要
Abstract
In the electro-chemical reinforcement method,the type of injecting solutions has been one of the main research issues.The injection of chemical solution has a significant impact on the electrokinetic properties of the soil,and the main influential factors include the types of cation,ion concentration,cation valence,cation radius,etc.of the injecting solutions.The change of the electrokinetic properties of the soil has a non-negligible impact on the electro-osmotic reinforcement effect.In order to study the effect of cation radius in injecting chemical solutions on the effect of electro-chemical reinforcement of soft soil foundation,taking the divalent metal ions Ca2+,Mg2+,Cu2+with different radii of the same valence as research objects,the changes of current,drainage volume,electric permeability coefficient during the test and the distribution of water content and shear strength after test were analyzed,combined with scanning electron microscope(SEM)to explore the effect of different radii of cations on the electro-chemical reinforcement effect.The results show that increasing the ionic radius can significantly improve the current,drainage rate,electric permeability coefficient and shear strength of the soil after treatment.Among them,the cation radius of Ca2+is the greatest,and the reinforcement effect of calcium ions is the best.The SEM images also show that soil compactness is higher after calcium ion treatment.关键词
化学电渗法/地基处理/软黏土/离子半径/微观结构Key words
electro-chemical method/ground treatment/soft clay/cationic radius/microstructure分类
建筑与水利引用本文复制引用
吴建奇,周晨阳,袁国辉,符洪涛,陶建伟..阳离子半径对电化学法加固软黏土效果的影响试验研究[J].土木与环境工程学报（中英文）,2024,46(6):23-30,8.基金项目
国家自然科学基金(52108338、51768025)National Natural Science Foundation of China(Nos.52108338,51768025) （52108338、51768025）
