Expansive Soil Of High-type Roadbed Classification And Experimental Study On Modifying Expansive Soil

Based on the fuzzy mathematical method, the paper establishes mathematical model of many indexes and writes the computer programmed. Many beating experiments of different quantity of added lime and CBR experiments of differ periods have been made. According to the dates of beating experiment, the paper analyses the relationship between on optimal water content, the maximal dry density and the quantity of added lime. The paper also discusses the reason why the lime can dispel the expansive and shrink quality of expansive soil. By building bank slope model and making use of finite element analysis program to calculate the examples, this paper simulates the six kinds of conditions in order to check out the effect of lime improvement. It is feasible to added lime of expansive soil by using finite element analysis. Finally some important conclusions have been summarized and some actable suggestions have been given.