Strength of Soils in Terms of Effective Stress

by Bobby O. Hardin, Univ of Kentucky, Lexington, KY, USA,

Document Type: Proceeding Paper

Part of: Richart Commemorative Lectures


The factors that determine soil strength, such as amount of confinement, density, particle size distribution, mineral friction, aging, particle crushing, and others, produce their effects through their influence on two fundamental mechanisms of resistance to deformation in particulate materials. These two fundamental mechanisms are: bonding at particle contacts, and the kinematics of particle movement within an element of deforming soil. The first of these mechanisms is physico-chemical in nature and the second is geometric. The objective of this paper is to model the strength of soils by considering these two basic mechanisms.

Subject Headings: Soil strength | Effective stress | Soil deformation | Soil stress | Soil analysis | Strength of materials | Triaxial tests | Density (material)

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