Propriétés des argiles marines de grande profondeur
Identifieur interne : 000437 ( PascalFrancis/Curation ); précédent : 000436; suivant : 000438Propriétés des argiles marines de grande profondeur
Auteurs : J.-L. Favre [France] ; M. Hattab [France]Source :
- Revue française de géotechnique [ 0181-0529 ] ; 2006.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
A 14 meter long deepwater marine clay coree, from the Gulf of Guinea, is analysed with a 16.7 cm step and its behaviour compared on one hand, with the reference behaviour of the remoulded normally consolidated mineral clays established by Biarez et Favre (1975, 1977), and on the other hand with intrinsic compression (ICL) line proposed by Burland (1990). The index parameters wL, wP, MBV, wnat and the mechanical parameters cu, Cc, Cs, σc, OCR are highlighted in this experimental study. The thinness of the step, the agreement of the profiles, reveals a complex genesis as well as the specificities of this natural marine smectite such as: the void ratio of sedimentation, sensitivity, and a apparent « overconsolidation » which translates a physico-chemical cohesion type.
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<front><div type="abstract" xml:lang="en">A 14 meter long deepwater marine clay coree, from the Gulf of Guinea, is analysed with a 16.7 cm step and its behaviour compared on one hand, with the reference behaviour of the remoulded normally consolidated mineral clays established by Biarez et Favre (1975, 1977), and on the other hand with intrinsic compression (ICL) line proposed by Burland (1990). The index parameters w<sub>L</sub>
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, w<sub>P</sub>
, MBV, w<sub>nat</sub>
and the mechanical parameters c<sub>u</sub>
, C<sub>c</sub>
, C<sub>s</sub>
, σ<sub>c</sub>
, OCR are highlighted in this experimental study. The thinness of the step, the agreement of the profiles, reveals a complex genesis as well as the specificities of this natural marine smectite such as: the void ratio of sedimentation, sensitivity, and a apparent « overconsolidation » which translates a physico-chemical cohesion type.</s0>
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