Experimental Study on Dynamic Properties of Improved Expansive Soil

This paper introduces conventional test and dynamic properties test of improved expansive soil.The modifier used in the test is lime and it is easy to get at local,and different amount of lime are used in this improved test.By changing the proportion between lime and expansive soil,the conventional test, strength test,expansive test and dynamic triaxial test are made respectively.The test results indicate that the engineering properties and strength parameters of the improved expansive soil are significantly improved and better than original expansive soil.Based on the conditions of construction,it is suggested that the proportion of lime is 6 to 7 percent,the optimal water content is 15 to 18 percent,the maximum dry density is about 18.2kN/m~3 and the compaction degree should be greater than 95 percent.Thus,it can meet the demand of project quality.