摘要
根据试验结果，讨论了冻融循环对石灰粉土剪切强度特性的影响。试验发现，反复冻结和融化强烈影响着石灰土的强度特性。一次冻融循环后，对未加石灰的粉土来说，其剪切强度变化不大，但是对石灰粉土来说，其剪切强度明显低于未冻融的，而且随冻融循环次数的增加，石灰粉土的剪切强度逐渐衰减，经历１０次冻融循环的饱水石灰粉土强度最低。
Results obtained from laboratory tests of lime silt under frost and thaw cycles show that the shear strengths of lime silt and silt do not change with confining pressure. For saturated and unsaturated lime silt, their strength values are all higher than that of silt and the greater the dry unit weight is, the higher the shear strength is. The shear strength of unsaturated lime silt is greater than that of the saturated lime silt. After 1 frost and thaw cycle, the shear strength of silt has a little change, but the shear strength of lime silt is obviously lower than that of lime silt before frost and thaw cycle. After many cycles of frost and thaw, the shear strength of lime silt gradually decreases with increasing cycles of frost and thaw, and after 10 cycles, it reaches to a minimum value.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
1999年第2期158-160,共3页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金
关键词
冻融循环
石灰粉土
剪切强度
frost and thaw cycles, lime silt, shear strength
