酸性调节液对黄土地区电动化学加固的影响  

Effect of Acidity Control on Electrochemical Improvement in Loess Area

作　　者：张曙 王宁伟 李伟[2] 罗跃春 夏彬桐 ZHANG Shu;WANG Ningwei;LI Wei;LUO Yuechun;XIA Bintong(Guangdong Zhuhai Engineering Survey Institute,Zhuhai 519000;Shenyang Jianzhu University,Shenyang 110168)

机构地区：[1]广东省珠海工程勘察院,广东珠海519000 [2]沈阳建筑大学,沈阳110168

出　　处：《土工基础》2024年第4期710-714,共5页Soil Engineering and Foundation

基　　金：珠海市创新创业团队项目(2120004000224)。

摘　　要：共设计三组非饱和黄土电动化学加固试件,并在在三组试件的阴极注入不同浓度的酸性调节液(A土样调节液浓度为1%~5%、B土样为6%~10%、C土样为11%~15%)。通过对比试验探讨了调节液浓度对电动化学处理黄土改性固结的影响,并通过对试验过程中的电流、排水量、能耗以及试验后不同龄期加固强度的分析,得出以下主要结论:(1)相较于传统的电动化学加固,于阴极注入酸性调节液能扩充黄土的排水通道,使排水时间延长,从而提高加固效果;(2)酸性调节液浓度越高,则单位能耗排水量越多;(3)酸性调节液浓度越高,加固后土体强度越高。The authors designed three groups of unsaturated loess electrochemical improvement specimens,and injected different concentrations of the acidic adjustment solution into the cathodes of three groups of specimens(the concentration of the regulating solution of soil A was 1%~5%,soil B sample was 6%~10%,and soil sample C was 11%~15%).The effect of the concentration of the regulating liquid on the modified consolidation of the electrochemical improvement of the loess samples was discussed through comparative experiments,and the following main conclusions were made by analyzing the current,displacement,energy consumption and the improvement strength of different curing ages after the test:(1)Compared with the traditional electrochemical improvement,the injection of the acidic adjustment liquid into the cathode can expand the drainage channel of the loess samples,thereby extending the drainage time and thus improving the reinforcement effect;(2)The higher the concentration of the acidic adjustment liquid,the more the unit energy consumption and drainage;(3)The higher the concentration of the acidic adjustment solution,the higher the soil strength after the improvement.

关 键 词：黄土 电动化学 浓度 酸性调节液 承载力 

分 类 号：TU472[建筑科学—结构工程]