| 试剂注入配合比对化学电渗法处治软黏土加固效应对比研究 |
| |
| 引用本文： | 任连伟,曹辉,孔纲强.试剂注入配合比对化学电渗法处治软黏土加固效应对比研究[J].岩土力学,2020(4):1219-1226. |
| |
| 作者姓名： | 任连伟 曹辉 孔纲强 |
| |
| 作者单位： | 河南理工大学土木工程学院;河海大学岩土力学与堤坝工程教育部重点实验室 |
| |
| 基金项目： | 国家自然科学基金(No.51478165,No.U1810203)。 |
| |
| 摘 要： | 化学电渗法处理软黏土作为一种快速有效的地基加固方式,近年来受到学术界的广泛关注。为了探讨试剂注入配合比对化学电渗法处治软黏土地基加固效应的影响,以联合注入CaCl2和Na2SiO3溶液注入配合比为研究对象,研究注入CaCl2和Na2SiO3溶液物质的量浓度比分别为1:1、1:2、1:3、2:1、3:1时的电渗排水加固软黏土地基效果,实测试验过程中的排水量、排水速率、排水微观特征(ICP-MS)以及能量消耗等变化规律,初步探讨排水效果、加固效果及均匀性等问题。研究结果表明,试验条件下,联合注入物质的量浓度比为1:1时化学电渗效果最好,且阳极腐蚀量最少、耗能量最低;试剂注入配合比对电渗效果的影响主要由加入试剂中阳离子的种类和数量决定,其中Ca2+对化学电渗的影响效果相对较突出。
|
| 关 键 词： | 软黏土 化学电渗法 试剂注入配合比 加固效果 |
Treatment effect of reagent injection mixing ratio on soft clay improved by chemical electroosmosis method |
| |
| REN Lian-wei,CAO Hui,KONG Gang-qiang.Treatment effect of reagent injection mixing ratio on soft clay improved by chemical electroosmosis method[J].Rock and Soil Mechanics,2020(4):1219-1226. |
| |
| Authors: | REN Lian-wei CAO Hui KONG Gang-qiang |
| |
| Institution: | (School of Civil Engineering,Henan Polytechnic University,Jiaozuo,Henan 454000,China;Key Laboratory of Geomechanics and Embankment Engineering of Ministry of Education,Hohai University,Nanjing,Jiangsu 210098,China) |
| |
| Abstract: | Chemical electroosmosis method is one of the fast and effective methods for soft ground treatment,which is widely accepted by engineers.In order to study the effect of reagent injection mixing ratio on chemical electroosmosis treatment of soft clay,model tests on electroosmotic were carried out,and the CaCl2 and Na2 SiO3 solutions were combined to study the injection effect.The electroosmotic drainage effect was obtained when the ratio of the concentration of the substances was 1:1,1:2,1:3,2:1 and 3:1 respectively.The displacement,drainage rate and drainage microscopic characteristics of each working condition after the test(ICP-MS),energy consumption,drainage effect,reinforcement effects,and uniformity were also discussed.The results show that when the concentration ratio of CaCl2 solution and Na2SiO3 solution was 1:1,the chemical electroosmosis effect is the best,the anodic corrosion amount is the least,and the energy consumption is the lowest.The electroosmotic effect is mainly influenced by the reagent injection ratio,specifically,by the type and quantity of cations added to the reagent,and the effect of Ca2+on chemical electroosmosis is relatively prominent. |
| |
| Keywords: | soft clay chemical electroosmosis method reagent injection mixing ratio treatment effect |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
