水泥灰土力学行为影响因素的试验研究  

Experimental Research on Influencing Factors of Cement Lime Soil Mechanical Behavior

作　　者：米海珍[1] 应赛[1] 王月礼[1] 文桃[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《建筑科学》2014年第5期58-62,89,共6页Building Science

摘　　要：通过对水泥灰土不同含盐量试样进行一系列三轴不固结不排水剪切试验,探讨含盐量、围压、浸泡时间、配比对水泥灰土剪切强度参数的影响,并从微观结构性上做出合理的解释。试验结果发现:水泥灰土强度参数c、φ均受含盐量等因素影响,而且强度参数c、φ可以由含盐量定量表示;水泥灰土的脆断性与围压有很大的关系,当围压很小时,其脆断性表现相当明显。以上的结论可为水泥灰土工程设计计算提供参考,有其工程应用意义。By a series of no consolidated undrained shear triaxial tests of cement-lime-soil specimens with different salt content,the effect of the salt content,confining pressure,soaking time,the ratio on the shear strength of cement-lime-soil is discussed,and a reasonable explanation is made on the micro structural aspect. The test results show that the strength parameters c,φ are influenced by salinity and other factors. Otherwise,strength parameters c,φ can be quantitatively expressed by the salt content. And the brittle fracture of cement-lime-soil is related greatly to the confining pressure,when the confining pressure is very small,the performance of its brittleness is quite obvious. These conclusions can provide a reference for design of the cement-lime-soil engineering and have engineering application significance.

关 键 词：水泥灰土 剪切强度 含盐量 三轴试验 应力-应变曲线 

分 类 号：TU435[建筑科学—岩土工程]