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Influence of Hydromechanical Couplings on the Resaturation of Engineered Barriers

Published online by Cambridge University Press:  10 February 2011

T. Lassabatere
T. Lassabatere*
Affiliation:
Commissariat è l'Energie Atomique, DCC/DESD/SESD, CEN Saclay, 91191 Gif /Yvette, France
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Abstract

This paper presents a fully coupled model for unsaturated deformable materials like swelling clays of engineered barriers. A thermodynamic framework is adopted which allows to take into account the influence of the mechanical variables (stress and strain tensors) upon the hydraulic part of the state equations (suction - water content relation). So, a fully coupled behaviour formulation is stated which, when combined with « classical » phenomenological relations, makes it possible to study the influence of the mechanical state of the barrier on the kinetics of its resaturation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 375
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

1 Bear, J. & Bachmat, Y., Introduction to Modeling of Transport Phenomena in Porous Media, Kluwer Academic Publishers, Dordrecht/Boston/London, 1990.Google Scholar
2 Bishop, A.W., « The principle of effective stress », Tecknisk Ukeflad, n°39, 859–863 (1959).Google Scholar
3 Coussy, O., Mechanics of Porous Continua, John Wiley and Sons, Chichester, 1995.Google Scholar
4 Dangla, P. & Coussy, O., « Drainage and Drying of Porous Materials »,, in IUTAM, Proc. Symp. on Mech. of Granular and Porous Materials, Cambridge, 1996.Google Scholar
5 Imbert, C., Etude de l'hydratation uniaxiale d'échantillons d'argile compact6e par la méthode gammadensimétrique double source, Technical note CEA SCS/93.45 (1993).Google Scholar
6 Lajudie, A., Raynal, J., Petit, J.C., Toulhoat, P., « Clay-Based Materials for Engineered Barriers: a Review », Mat. Res. Society Proc. Vol 353, Material Research Society, 1995.Google Scholar
7 Lassabatere, T., Couplages hydro-mécaniques en milieu poreux non saturé avec changement de phase. Application au retrait de dessiccation, Thèse de I'ENPC, Paris, 1994.Google Scholar
8 Shrefler, B.A., Simoni, L., Xikui, Li, Zienkewicz, O.C., « Mechanics of Partially Saturated Media », Numerical methods and constitutive modelling in geomechanics, Springer-Verlag, 1990.Google Scholar
9 Volckaer, G. et al. , Thermal-hydraulic-mechanical and geochemical behaviour of the clay barrier in radioactive waste repositories, Final Report, EUR 16744 EN, 1996.Google Scholar