A Sample Preparation Method Enhancing Shear Strength for Remolded Unsaturated Soil
Remolded soil is usually substituted for undisturbed soil in shear tests to measure the strength of natural soil. However, the traditional remolding process of unsaturated soil may lead to a wide difference on the strength of soil and therefore fail to represent the strength properties of natural soil. Based on the traditional remolding methods, this paper introduces an experimental method which could enhance the shear strength of remolded soil significantly by readjusting the water distribution and restoring the matric suction between soil layers. Compared to the traditional compacted method, the improved method could effectively raise the cohesion of unsaturated soil, which enables the remolded soil fully to retain its strength and hence to be applied accurately to predict the strength of natural soil.
KeywordsShear strength Unsaturated soil Remolded soil Matric suction Cohesion
- 2.Sun, D., Gao, Y.: Water retention behavior of soils with different preparations. Chin. J. Geotech. Eng. 37, 91–97 (2015)Google Scholar
- 3.Lin, H., Li, G., Yu, Y.: Influence of matric suction on shear strength behavior of unsaturated soils. Rock Soil Mech. 28, 1931–1936 (2007)Google Scholar
- 5.GBT 50123-1999: The Standard for Soil Test Method. MOC (Ministry of Construction) (1999)Google Scholar
- 6.Delage, P., Yu, J.C.: Elasto-plastic behavior of a compacted silt. Int. J. Rock Mech. Mining Sci. Geomech. Abs. 32, 317–324 (1995)Google Scholar