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The thermal conductivity of clays is the fundamental parameter which governs the thermal diffusion and the pore pressure of the rock mass under thermal loading. Experiments have been undertaken in a reduced model, respecting representative boundary conditions. They show that the thermal conductivity depends on temperature in an unfavourable sense to the decrease of heat. On the other hand, the outflow of pore water, from the source to the exterior, has a low amplitude. A simple model of a porous medium allows the observations and illustrates the effects of the variation of conductivity on the behaviour of the rock mass. Finally, using the numerical formulations specially developed, the effect of the characteristics of proposed models on the predictions of thermohydromechanical behaviour of geometrically simple structures subjected to a given thermal loading are examined.

Additional information

Authors: DJERAN I, Ecole Polytechnique, Laboratoire de Mécanique des Solides, Palaiseau (FR)
Bibliographic Reference: EUR 14373 FR (1993) 332 pp., FS, ECU 39
Availability: (2)
ISBN: ISBN 92-826-5324-2
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