Influence of effective stress on swelling pressure of expansive soils
1 Ruhr-Universität Bochum, Chair of Foundation Engineering, Soil and Rock Mechanics, 44780 Bochum, Germany
2 Geoenvironmental Research Centre, School of Engineering, Cardiff University, Newport Road, Cardiff, CF24 3AA, Wales, UK
a Corresponding author: firstname.lastname@example.org
The volume change and shear strength behaviour of soils are controlled by the effective stress. Recent advances in unsaturated soil mechanics have shown that the effective stress as applicable to unsaturated soils is equal to the difference between the externally applied stress and the suction stress. The latter can be established based on the soil-water characteristic curve (SWCC) of the soil. In the present study, the evolution of swelling pressure in compacted bentonite-sand mixtures was investigated. Comparisons were made between magnitudes of applied suction, suction stress, and swelling pressure.
© The Authors, published by EDP Sciences, 2016
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