期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：267
期号：5
页码：1-7
DOI：10.1088/1755-1315/267/5/052049
出版社：IOP Publishing
摘要：According to the typical clay in Changzhou, the shear properties of interface between cement paste and clay were studied through changing water content of clay and water cement ratio of cement paste. Rules of shear strength, internal friction angle and cohesion of contact surface between cement paste and clay changing with water content were researched. The results show that when the water cement ratio and clay moisture content remain unchanged, the shear stress increases with the increase of normal stress. After reaching a peak value, the shear stress begins to decrease. When water cement ratio and normal stress remain unchanged, the shear stress decreases with the increase of water content. When the water cement ratio is constant, the internal friction angle decreases with the increase of water content. When the water cement ratio is 0.4 and 0.45, the cohesion decreases with the increase of water content. When the water cement ratio is above 0.5, the cohesion increases first and then decreases with the water content. 17% is the optimum moisture content, at this time, the cohesion is the greatest.
