Influence of effective stress on swelling pressure of expansive soils

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 stres...

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Bibliographic Details
Main Authors: Baille, Wiebke, Lang, Linzhi, Tripathy, Snehasis, Schanz, Tom
Format: Conference Proceeding
Language:English
Subjects:
Bentonite
Expansive soils
Moisture content
Pressure
Shear strength
Soil compaction
Soil mechanics
Soil strength
Soil suction
Soil water
Stress
Stresses
Swelling pressure
Unsaturated soils
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Summary: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.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/20160914016