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.
| Original language | Chinese (Simplified) |
|---|---|
| Pages (from-to) | 3431-3436 |
| Number of pages | 6 |
| Journal | Yantu Lixue/Rock and Soil Mechanics |
| Volume | 34 |
| Issue number | 12 |
| Publication status | Published - 1 Dec 2013 |
Keywords
- 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