人民长江Issue(19)：55-59,5.
浸水条件下石灰改良膨胀土力学性质试验研究
Experimental study on mechanical properties of lime improved expansive soil after immersion
刘泽俊 1郭亚 2蒋洋 3刘宇翼 4耿海峰2
作者信息
- 1. 淮阴工学院 土木工程实验室，江苏 淮安223001
- 2. 徐州市水利工程建设监理中心，江苏 徐州221000
- 3. 长安大学，陕西 西安710064
- 4. 中国矿业大学，江苏 徐州221116
- 折叠
摘要
Abstract
According to special embankment condition, direct shear tests, consolidation tests and CBR tests on lime improved expansive soil after different immersion time were carried out to reveal the changing law of its mechanical property based on indoor expansive soil improvement tests and compaction tests, so as to provide calculation parameters for embankment deformation and stability analysis. The test results indicated that different degree of loose phenomena appeared on the specimen surface after im-mersion, leading to fast falling of mechanical indices;but the indices tended to be stable after a period of immersion time. Com-pared with the samples before immersion, shear strength is about 70%, the compression modulus is about 30%, and the CBR is about 80%. The changing laws of mechanical indices with immersion time are put forward based on analysis of test results, shear strength and CBR reduce with the growth of the immersion time in a logarithmic way while the compression coefficient increases with the growth of the immersion time in a power way. These models can be used to quickly predict the indices of lime improved expansive soil after immersion.关键词
石灰改良膨胀土/浸水/抗剪强度/压缩系数/CBRKey words
lime improved expansive soil/immersion/shear strength/compression coefficient/CBR分类
天文与地球科学引用本文复制引用
刘泽俊,郭亚,蒋洋,刘宇翼,耿海峰..浸水条件下石灰改良膨胀土力学性质试验研究[J].人民长江,2014,(19):55-59,5.
