Strength Variation Along Failure Surfaces in Clay

by J. M. Duncan,
H. Bolton Seed,

Serial Information: Journal of the Soil Mechanics and Foundations Division, 1966, Vol. 92, Issue 6, Pg. 81-104

Document Type: Journal Paper

Abstract: Experimental studies have shown that the undrained strength of one-dimensionally consolidated clay may vary with orientation of the failure plane. Three of the types of variation found by trimming unconsolidated-undrained compression test specimens in different directions are shown in Fig. 1. Variations of undrained strength such as those shown in Fig. 1 may result from anisotropy with respect to the values of the effective stress strength parameters, or anisotropy with respect to development of changes in pore-water pressures, or both; they may also result from reorientation of the principal stress directions during sampling and testing.

Subject Headings: Soil strength | Consolidated soils | Clays | Failure analysis | Compression tests | Anisotropy | Effective stress | Soil analysis

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