岩土工程学报2009，Vol.31Issue(11)：1768-1772,5.
冻融作用对黏土力学性能影响的试验研究
Experimental study on effects of freezing and thawing on mechanical properties of clay
摘要
Abstract
In order to study the influence of freezing and thawing on mechanical properties of clay, 1-D compression tests and consolidation-drained shear tests are carried out on intact soil and the corresponding thawed soft under different freezing and thawing conditions. The experiments show that after freezing and thawing, the coefficient of compressibility is larger than that of the intact soil. The lower the temperature at the freezing end and the larger the water content are, the larger the changes of the compressibility are. There is no effect of the melting temperature on the compressibility of the thawed soil. The freezing and thawing has different influences on the remoulded soil with different original densities, and it will make the compressibility of softs with smaller original densities decrease, while that of the softs with larger original densities increases. After freezing and thawing, the cohesion decreases, and the internal friction angle increases. For the closed freezing and thawing, the lower temperature of the freezing end leads to larger changes in the internal friction angle. The melting temperature has little effect on the strength of the thawed soil.关键词
原状土/重塑土/融土/影响因素/力学性能Key words
intact soil/ remoulded soil/ thawed soil/ influencing factor/ mechanical property分类
建筑与水利引用本文复制引用
王效宾,杨平,王海波,戴海明..冻融作用对黏土力学性能影响的试验研究[J].岩土工程学报,2009,31(11):1768-1772,5.基金项目
江苏省"六大人才高峰"培养计划项目(2004) （2004）
苏州市科技局苏州轨道交通专项课题(Zxj0802) （Zxj0802）
