Stress-Path Dependent Deformation Moduli of Clay

by Yudhbir, Asst. Prof.; Dept. of Civ. Engrg., Indian Institute of Technology, Kanpur, India,
A. Varadarajan, Sr. Research Asst.; Dept. of Civ. Engrg., Indian Institute of Technology, Kanpur, India,


Serial Information: Journal of the Geotechnical Engineering Division, 1975, Vol. 101, Issue 3, Pg. 315-327


Document Type: Journal Paper

Errata: (See full record)

Abstract: In case of normally consolidated saturated clays the stress- strain behavior during drained shear is shown to depend considerably on stress-path. The effect of stress-path on variation of initial tangent modulus with preshear consolidation pressure is brought out. Relationships between modulus number, k, exponent, n, failure ratio and stress-path have been shown to be bilinear with the change in slope being at a common and unique stress-path for a given clay. The stress-path stress level dependent k, n, and Rf values obtained from experimental investigation have been incorporated in the finite element of the earth pressure problem. The results of the active earth pressure problem using constant k, n, and Rf values obtained from conventional triaxial tests are shown to be at marked variance with those obtained by using stress-path dependent modulus values.

Subject Headings: Clays | Soil stress | Soil modulus | Consolidated soils | Saturated soils | Stress strain relations | Soil pressure | Triaxial tests

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