硫酸钠溶液对水泥土抗剪强度的影响试验  

Experimental study of sodium sulfate solution effect on the shear strength of cemented soil

作　　者：陈四利[1] 张精禹 宁宝宽[1] 杨雨林[1] 魏星[1] 吴依涵 

机构地区：[1]沈阳工业大学建筑与土木工程学院,辽宁沈阳110870

出　　处：《水利水电科技进展》2015年第6期82-85,共4页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(51279109);辽宁省教育厅基金(201364088)

摘　　要：为研究硫酸钠溶液对水泥土抗剪强度的影响,对硫酸钠溶液腐蚀后的水泥土进行了无固结排水直剪试验。试验结果表明:水泥土的抗剪强度随着硫酸钠溶液浓度的增加而逐步降低,相应的内摩擦角和黏聚力也逐步降低;硫酸钠溶液浓度不变时,水泥土抗剪强度随着硫酸钠溶液腐蚀时间的增加而逐步降低,黏聚力也逐步降低,腐蚀对黏聚力影响较大,而对内摩擦角影响很小。In order to study the effect of sodium sulfate solution on the shear strength of cemented soil, direct shear with unconsolidated-undrained test was carried out on sodium sulfate corrosion of cemented soil. The test results show that the shear strength of cemented soil gradually decreases with the increase of sodium sulfate solution concentration, and angle of internal friction and cohesion of the shear strength index gradually decrease. When the concentration of sodium sulfate solution is constant, the shear strength of cemented soil gradually decreases with the increase of sodium sulfate solution corrosion time, and cohesion of the shear strength index gradually decreases. The corrosion has a great impact on cohesion, while it has little effect on angle of internal friction.

关 键 词：水泥土 硫酸钠溶液 抗剪强度 剪切试验 腐蚀效应 

分 类 号：TU411[建筑科学—岩土工程]