Abstract
Featured by its high strength and good water stability, coarse-grained soil can be mixed with clay and used as fine-property filler in embankment construction. However, the mixing ratio is usually difficult to determine. If the coarse-grained soil content is excessively high, the embankment is prone to crack or damage because of cohesion deficiency. On the contrary, if the coarse-grained soil content is too low, its high strength can not be utilized effectively, which may result in strength deficiency and excessive settlement. Based on field survey and laboratory test results, this paper has made deep analysis on the strength mechanism of glacial sediment coarse-grained soil, and the reasonable mixing ratio of coarse-grained soil and clay soil has been discussed.
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