Study on Compaction and Permeability Characteristics of Gravel Soil Subgrade Filler
In order to optimize the design of gravel soil,the dry density,permeability coefficient and crushing rate of gravel soil were tested un-der different conditions(water content and stone content),and the compaction and permeability characteristics of gravel soil were analyzed.The results show that the compaction dry density of gravel soil increases first and then decreases with the increase of water content.With the in-crease of stone content,the maximum compaction dry density of gravel soil increases first and then decreases,the permeability coefficient of gravel soil increases continuously,and the crushing rate of gravel soil increases.When the water content is 5%and the stone content is 60%,the broken rate of gravel soil is 22.5%and 39.3%higher than that of gravel soil with 40%and 50%stone content,respectively.The fine particles with a particle size less than 0.15mm were lost significantly after compaction.
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