酸碱环境对水泥土抗剪强度影响的试验研究

doi:10.7522/j.issn.1000-0240.2016.0113

冰川冻土 ›› 2016, Vol. 38 ›› Issue (4): 982-987.doi: 10.7522/j.issn.1000-0240.2016.0113

酸碱环境对水泥土抗剪强度影响的试验研究

陈四利, 张精禹, 史建军, 黄杰, 孟晋

沈阳工业大学建筑与土木工程学院, 辽宁沈阳 110870

收稿日期:2016-01-25 修回日期:2016-07-20 出版日期:2016-08-25 发布日期:2016-09-19
作者简介:陈四利(1959-),男,辽宁绥中人,教授,2003年在东北大学获博士学位,现从事环境岩土力学及其应用方面的研究.E-mail:chen1458@163.com
基金资助:
国家自然科学基金项目（51279109）资助

Experimental study on shear strength of cemented soil in the acid and alkali conditions

CHEN Sili, ZHANG Jingyu, SHI Jianjun, HUANG Jie, MENG Jin

School of Architecture & Civil Engineering, Shenyang University of Technology, Shenyang 110870, China

Received:2016-01-25 Revised:2016-07-20 Online:2016-08-25 Published:2016-09-19

摘要/Abstract

摘要： 以水泥土处于复杂环境中的安全性和耐久性为研究背景，对酸碱环境下水泥土进行了固结不排水剪切试验，得到了水泥土应力偏差（σ₁-σ₃）与轴向应变（ε）关系曲线和抗剪强度指标，研究了酸碱度对水泥土抗剪强度的影响.试验结果表明，随着围压、水泥掺量、pH值的增加，水泥土的抗剪强度逐步增加；水泥土的黏聚力、内摩擦角随着水泥掺量及酸碱度pH值的增大而逐渐增加；得到了不同酸碱度环境下水泥土的抗剪强度方程.其研究结果对在水泥土工程中的安全性和耐久性设计具有一定的指导意义和参考价值.

关键词: 水泥土, 酸碱度, 腐蚀环境, 水泥掺量, 抗剪强度指标

Abstract: The relationship curves between the stress deviation(σ₁-σ₃) and the axial strain(ε) and the shear strength indexes have been obtained after the consolidation-undrained shear tests were carried out in acid and alkali conditions of cemented soil, its security and durability in complex conditions taken as the research background. The tests show that the shearstrength of cemented soil increases gradually with the rise of confining pressures, cemented contents and pH value. So do the cohesion and internal friction angle of cemented soil increase gradually with the rise of cemented contents and pH value. Meanwhile the shear strength equations of cemented soil in different acid and alkali conditions have been obtained. The study results have guiding significance and instructive reference for the security and durability of cemented soil engineering.

Key words: cemented soil, pH value, corrosion environment, cemented content, shear strength index

中图分类号:

TU411

陈四利, 张精禹, 史建军, 黄杰, 孟晋. 酸碱环境对水泥土抗剪强度影响的试验研究[J]. 冰川冻土, 2016, 38(4): 982-987.

CHEN Sili, ZHANG Jingyu, SHI Jianjun, HUANG Jie, MENG Jin. Experimental study on shear strength of cemented soil in the acid and alkali conditions[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2016, 38(4): 982-987.

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酸碱环境对水泥土抗剪强度影响的试验研究

Experimental study on shear strength of cemented soil in the acid and alkali conditions

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