Experimental Study on Shear Strength of West Sichuan Unsaturated Mixed-Soil
Experimental Study on Shear Strength of West Sichuan Unsaturated Mixed-Soil
复制标题
DOI：
10.4028/www.scientific.net/amm.353-356.772
复制
发表时间：
2013-08
期刊：
影响因子：
--
通讯作者：
K. Cui;Bangwei Huang
中科院分区：
文献类型：
--
作者：
K. Cui;Bangwei Huang
通过控制含水率间接控制基质吸力，对川西三种典型的非饱和重塑混合土进行固结自由三轴剪切试验。试验数据表明，对于不同类型的土样，粘粒含量少、石英含量高的土样内摩擦角相对较大，亲水矿物含量高的土样具有较大的粘聚力。同时，对于不含或不含亲水性矿物的样品，粘结力主要受含水率的影响，而对于亲水性矿物含量较大的样品，含水率和干密度共同影响粘结力。对于某一样品，含水率和干密度的变化对内摩擦角的影响较小，而对粘聚力的影响较大。此外，基质吸力的变化对内摩擦角的影响较小，内聚力随基质吸力的增大而增大。
By controlling moisture content to control matrix suction indirectly, three typical unsaturated remolded mixed-soil from west Sichuan are studied by the consolidated untrained triaxial shear test .The test data show that for different kinds of soil samples, the sample with less amount of clay and high content of quartz has bigger internal friction angle relatively, and the sample with hydrophilic mineral and high content of clay has bigger cohesive force. Meanwhile, for the sample without or less hydrophilic mineral, cohesive force is affected mainly by water content, and for the sample with large content of hydrophilic mineral, water content and dry density affect cohesive force together. For a certain sample, the variation of moisture content and dry density affects internal friction angle less, while affects cohesive force more. In addition, the change of internal friction angle resulting from the variation of matrix suction is less, and cohesive force increases as matrix suction increases.