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Communication Dans Un Congrès Année : 2023

Numerical Modelling of the Swelling of Clayey Geomaterials by a Multiscale Approach

Résumé

The swelling of clay materials finds its origin at the different scales and is governed by two phenomena: crystalline and osmotic swelling. In this work, we propose a multi-scale numerical model that considers both swelling regimes. The model in its first version is based on a phenomenological approach to formulate the different interactions that occur in the interlayer space with respect to the disjoining pressure and the interparticular pores considering capillarity effects. The model is newly implemented in Code_Aster Finite Element software for hydro-mechanical coupling. The aim of this paper is to enhance the first model at its first implementation by adding: interparticular osmotic swelling along with the first existing aspect namely the capillarity effects at the interparticular pores scale. The validation of the updated model focuses on the swelling mechanism existing in constant-volume conditions in terms of swelling pressure. The model showed good accuracy compared to experimental results.
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Dates et versions

hal-04487249 , version 1 (03-03-2024)

Identifiants

  • HAL Id : hal-04487249 , version 1

Citer

Hamza Mhamdi Alaoui, Richard Giot, Dimitri Prêt, Philippe Cosenza, Stephen Hedan. Numerical Modelling of the Swelling of Clayey Geomaterials by a Multiscale Approach. 15th ISRM Congress, Oct 2023, Salzburg (AUT), Austria. ⟨hal-04487249⟩
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