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Article | REF: C302 V1

Mechanical behavior of unsaturated soils

Authors: Pierre DELAGE, Yu‐Jun CUI

Publication date: May 10, 2001, Review date: July 20, 2020

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2. Mechanical behavior

2.1 General

The first authors to deal with unsaturated soil mechanics tried to adapt the concept of effective stress to unsaturated soils. This was the subject of intense discussion in the 1960s, when an approach based on the use of two independent stress variables was also developed.

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2.2 Effective constraints or independent variables

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