| Issue |
E3S Web of Conf.
Volume 382, 2023
8th International Conference on Unsaturated Soils (UNSAT 2023)
|
|
|---|---|---|
| Article Number | 11001 | |
| Number of page(s) | 7 | |
| Section | Effects of Microstructure | |
| DOI | https://doi.org/10.1051/e3sconf/202338211001 | |
| Published online | 24 April 2023 | |
Effects of microstructure on THM behaviour of geomaterials
Navier, Ecole des Ponts, Univ Gustave Eiffel, CNRS, Marne-la-Vallée, France
* Corresponding author: jean-michel.pereira@enpc.fr
In this paper, we discuss the thermo-hydro-mechanical behaviour of geomaterials at the light of their microstructure and its changes induced by multiphysics loading. After recalling the strong links between the microstructure and the water retention properties of unsaturated soils, the relation between themicrostructure and the physical properties ruling heat and mass transfers are discussed. The mechanical behaviour of unsaturated soils is then discussed focussing on the definition of an effective stress based on a microstructure description. The experimental determination of this microstructurally-based effective stressis presented, including recent advances to identify the stress coefficient from Mercury Intrusion Porosimetry data. Opening remarks towards macroscopic modelling of unsaturated geomaterials accounting for their microstructure and its changes is finally discussed.
© The Authors, published by EDP Sciences, 2023
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