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Erschienen in:
2018 | OriginalPaper | Buchkapitel
Effects of Pore-Water Chemistry on the Behaviour of Unsatuarted Clays
verfasst von : X. Lei, H. Wong, A. Fabbri, A. Limam, Y. M. Cheng
Erschienen in: Proceedings of the 4th Congrès International de Géotechnique - Ouvrages -Structures
Verlag: Springer Singapore
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Abstract
Due to their various applications in geo-environmental engineering, such as in landfill and nuclear waste disposals, the coupled chemo-hydro-mechanical analysis of expansive soils has gained more and more attention recently. These expansive soils are usually unsaturated under field conditions; therefore the capillary effects need to be taken into account appropriately. For this purpose, based on a rigorous thermodynamic framework [2], the authors have extended the chemo-mechanical model of Loret el al. [5] for saturated homoionic expansive soils to the unsaturated case [3]. This chemo-mechanical unsaturated model is subsequently applied to simulate the behaviour of triaxial samples subject to combined chemo-mechanical loadings under laboratory conditions to investigate its precision and pertinence in view of future refinements.