【摘要】 膨胀土是一种典型的区域性特殊土,因具有显著的吸水膨胀软化和失水收缩开裂等变形特性,而对渠道、路基和挡墙等工程具有严重的破坏性。目前已知治理膨胀土的方法中,固化剂改良法因具有良好的改性效果和高性价比而在工程界得到广泛应用。分析了固化剂改良膨胀土的作用机理,并据此对膨胀土固化剂的类型进行了划分。在此基础上,对比分析了各类膨胀土固化剂的改良效果,进而探讨了膨胀土改性研究的基本思路与方法。更多还原

【Abstract】 Expansive soil is a typically regional special soil with remarkable deformation characteristics variated with the change of moisture content. It has a serious destruction on the engineering practices,such as channels,roadbeds and retaining walls. Curing agent is now used widely because of its good modified effect and high cost performance in the field of improving the expansive soil. In the present study,the mechanism of curing agent is analyzed,and the category of curing agent is also classified. On that basis,the comparison of modified effect for the different curing agents is studied,and then the basic analysis thought and method on improving the expansive soil is discussed.更多还原