真空预压法处理高液限黏土适用性模型试验研究

Model experimental study on applicability of vacuum preloading to treat high liquid limit clay

设计真空预压法处理高、低液限黏土的室内模型对比试验,研究真空预压法对某工程高液限黏土的适用性及其对高、低液限黏土两种土样的处理效果。结果表明:试验后各土样的含水率、孔隙比明显减小:密实性、强度明显提高;高液限土样的体积压缩率为47.4%,低液限土样的体积压缩率为22.9%。真空预压法适用处理本工程高液限黏土,处理效果明显。

Designing the comparative model experiment, we study the treatment effect of high and low liquid limit clay with vacuum preloading method, esp. the applicability of vacuum preloading method to treat high liquid limit clay in a project and the treatment effect for the two kinds of clay （ high and low liquid limit） samples with this method. The result indicates that the moisture content and void ratio of clay samples decreased obviously; The density and strength of them also improved obviously; The volume compression ratio of high liquid limit clay is 47.4%, and the volume compression ratio of low liquid limit clay is 22. 9%. It is applicative to treat high liquid limit clay with vacuum preloading method in this project, and the treatment effect is obviously.