Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8047343 | Applied Clay Science | 2013 | 13 Pages |
Abstract
As in Biot's theory, Biot's tensor in the proposed stress state equation of Callovo-Oxfordian argillite weighs in a hydro-mechanical coupling term the pressure variation in the interparticle pores. Because of the particular microstructure of Callovo-Oxfordian argillite, Biot's tensor cannot be determined by a classic triaxial “change in pore” pressure poromechanical test. An original methodology is proposed to determine this tensor, which uses the monitoring of the length variation of a sample during a free-drying. Biot's tensor is found to be almost isotropic, with a Biot's coefficient equal to 0.84.
Keywords
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Authors
S. Cariou, L. Dormieux, F. Skoczylas,