Modelling the effects of pore-water chemistry on the behaviour of unsaturated clays

Xiaoqin Lei, Henry Wong, Antonin Fabbri, Ali Limam, Yung Ming Cheng

Research output: Journal article publicationConference articleAcademic researchpeer-review


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 (Lei et al., 2014), the authors have extended the chemo-mechanical model of Loret el al. (2002) for saturated homoionic expansive soils to the unsaturated case (Lei, 2015). In this paper, this chemo-mechanical unsaturated model is adopted to simulate the chemo-elastic-plastic consolidation process of an unsaturated expansive soil layer. Logical tendencies of changes in the chemical, mechanical and hydraulic field quantities are obtained.
Original languageEnglish
Article number07006
JournalE3S Web of Conferences
Publication statusPublished - 12 Sep 2016
Event3rd European Conference on Unsaturated Soils, E-UNSAT 2016 - Ecole des Ponts, Marne la Vallee, Paris, France
Duration: 12 Sep 201614 Sep 2016

ASJC Scopus subject areas

  • Environmental Science(all)
  • Energy(all)
  • Earth and Planetary Sciences(all)


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