On the basis of simulating the seasonal climate which alternates between dryness and wetness in some places,making use of the new hit canister to produce the samples,group of tests were performed to study the influence of drying-wetting cycles on bearing capacity of improved soil by CMSC soil stabilized agent.

In order to establish the transforming relation between modified proctor compaction method(MPCM) and vibrating compaction method(VCM),three types of graded crushed aggregate performance were compared between the VCM and MPCM.

On the basis, through the test by the large-scale compaction instrument, this paper studies densification characteristic of the soil rock mixture and analyses the impact on the maximum grain , the grading analysis ,compaction work, the method of compaction and equivalent treatment of the maximum dry density and the optimum moisture .