Application of Sand Filling Method in Highway Subgrade Compactness Test
In this paper,the highway in a certain area is taken as an example,and sand filling method is selected for test.After analyzing the overall structure of the sand filling method,a sand filling cylinder with a diameter of 20 cm and a sand volume with a particle size of 0.3～0.6 mm are selected,the wet density and dry density of the test pit mixture are calculated according to the test process,and the subgrade compactness is calculated to complete the test.The test results show that the method can calculate the wet density and dry density of the subgrade soil,and the compactness of the subgrade soil can be obtained according to the results,and the results are both above 93.3%,which has the ability to test the subgrade compactness.
highway subgradecompactness testsand filling methodwet densitydry density
NETL
NSTL
万方数据
