Effective Stress Evaluation for Unsaturated Soils

by G. E. Blight,

Serial Information: Journal of the Soil Mechanics and Foundations Division, 1967, Vol. 93, Issue 2, Pg. 125-148

Document Type: Journal Paper


Methods are developed for evaluating effective stresses and shear strength parameters from laboratory shear, volume change and swelling pressure tests on unsaturated soil. The effective stress principle is shown to relate changes in shear strength and surface elevation of natural profiles of unsaturated clay. These developments have important applications to the design of earth embankments and shallow foundations on expansive clay.

Subject Headings: Shear strength | Soil strength | Effective stress | Shear stress | Soil stress | Expansive soils | Soil pressure | Unsaturated soils

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