Effective Stress Principle in Saturated Clay

by H. E. Evans, Lect., Civ. Engrg.; School of Engrg., University College, Swansea, Great Britain,
R. W. Lewis, Lect., Civ. Engrg.; School of Engrg., University College, Swansea, Great Britain,


Serial Information: Journal of the Soil Mechanics and Foundations Division, 1970, Vol. 96, Issue 2, Pg. 671-683


Document Type: Journal Paper

Abstract: A series of experiments was made on a silty clay using two test types. These were the conventional normally consolidated undrained test, and a test devised to artificially induce a large negative pore-water pressure in the clay. A comparison is made between the results. From this a deviation is observed if the usual form of the effective stress equation is used. A new form of this equation is proposed. It incorporates a parameter λ, accounting for the state of stress of the pore fluid.

Subject Headings: Clays | Effective stress | Soil tests | Consolidated soils | Soil pressure | Saturated soils | Silt | Pore water

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