American Society of Civil Engineers


Study on the Strength Mechanism of Coarse-Grained Soil Influenced by Clay Content Based on Laboratory Test


by Hong-gui Wang, (School of Civil Engineering & Architecture, Central South University, Changsha, Hunan 410075, China E-mail: guihonglong@163.com), Lin-rong Xu, (School of Civil Engineering & Architecture, Central South University, Changsha, Hunan 410075, China), Jie-jin Chen, (School of Civil Engineering & Architecture, Central South University, Changsha, Hunan 410075, China), and Da-wei Lv, (School of Civil Engineering & Architecture, Central South University, Changsha, Hunan 410075, China)
Section: Soil Behavior and Laboratory Testing, pp. 14-19, (doi:  http://dx.doi.org/10.1061/41044(351)3)

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Document type: Conference Proceeding Paper
Part of: Recent Advancement in Soil Behavior, in Situ Test Methods, Pile Foundations, and Tunneling: Selected Papers from the 2009 GeoHunan International Conference
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.


ASCE Subject Headings:
Coarse-grained soils
Clays
Laboratory tests