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Title: Study of shear dilatancy behaviors of coarse-grained soil in large-scale triaxial tests under K0-consolidation condition
Authors: Chu, FY
Zhu, JG
Yin, JH 
Keywords: Coarse grained soil
K0-consolidation condition
Large-scale triaxial test
Issue Date: 2013
Publisher: 岩土力學編輯部
Source: 岩土力學 (Rock and soil mechanics), 2013, v. 34, no. 12, p. 3431-3436 How to cite?
Journal: 岩土力學 (Rock and soil mechanics) 
Abstract: Using large-scale shearing device, K0 consolidation-drained triaxial test and isotropic consolidation-drained triaxial test under different confining pressures are performed for three relative densities (0.9, 0.8, 0.7) overburden material of ShuangJiangKou earth dam. The difference between dilatancy behaviours of coarse-grained soil under K0-consolidation and isotropic consolidation is investigated. Meanwhile, applicability of the modified Rowe dilatancy equation for coarse-grained soils under K0-consolidation is tested. The test results show that the dilatancy under K0-consolidation is more remarkable than that under isotropic consolidation; and this difference is more obvious for coarse-grained soils with lower density. By means of the nonlinear fitting of the results of triaxial tests, a relationship formula for coarse-grained soils under K0-consolidation and isotropic consolidation among dilatancy factor and relative density and confining pressure is obtained, according to which, the dilatancy' strength of coarse-grained soil under different consolidations can be judged. For the coarse-grained materials under K0-consolidation, of which dilatancy characteristics can be reflected well by the modified Rowe dilatancy equation.
ISSN: 1000-7598
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