论文部分内容阅读
为了探索不同黏土矿物成分对黏土一维压缩特性的影响,采用高岭土、伊利土、蒙脱石及绿泥石,按不同质量比例混合来制备重塑土样,进行室内标准一维压缩试验。大量试验结果对比表明:①高岭土与伊利土混合土样的压缩指数(Cc)和回弹指数(Cs)都随伊利土含量的增加而增加;②高岭土、伊利土与蒙脱石混合土样的Cc和Cs随蒙脱石含量的增加而增大,且蒙脱石的作用占主导地位;③高岭土、伊利土、蒙脱石及绿泥石混合土样的Cc和Cs随蒙脱石与绿泥石二者含量之和的增加而增大,且蒙脱石的作用占主导地位。基于试验结果,总结出各黏土矿物成分影响的压缩指数与回弹指数的非线性表达式。此外,试验表明所有混合土样的压缩指数与回弹指数的比值(Cc/Cs)介于6.1和9.1之间变化。
In order to explore the effect of different clay minerals on the one-dimensional compression characteristics of clay, kaolinite, Erie, montmorillonite and chlorite were mixed in different mass proportions to prepare remodeled soil samples for indoor standard one-dimensional compression tests. Comparisons of a large number of test results show that: (1) Both the compressive index (Cc) and the rebound index (Cs) of kaolinite and illite mixed soil samples increase with the increase of Erlitite content. (2) Cc and Cs increase with the increase of montmorillonite content, and the role of montmorillonite dominates; ③ Cc and Cs of kaolin, erlotite, montmorillonite and chlorite mixed soil samples vary with montmorillonite and green As the sum of the contents of mud and mud increases, the role of montmorillonite dominates. Based on the experimental results, the nonlinear expressions of compressibility index and springback index of clay minerals are summarized. In addition, tests have shown that the ratio of compressibility index to rebound index (Cc / Cs) for all mixed samples varies between 6.1 and 9.1.