Study of shear dilatancy behaviors of coarse-grained soil in large-scale triaxial tests under K0-consolidation condition

Fu Yong Chu, Jun Gao Zhu, Jianhua Yin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


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.
Original languageChinese (Simplified)
Pages (from-to)3431-3436
Number of pages6
JournalYantu Lixue/Rock and Soil Mechanics
Issue number12
Publication statusPublished - 1 Dec 2013


  • Coarse grained soil
  • Dilatancy
  • K -consolidation condition 0
  • Large-scale triaxial test

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Soil Science

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