Chinese Science Bulletin

, Volume 58, Issue 27, pp 3422–3429 | Cite as

The input work expression and the thermodynamics-based modelling framework for unsaturated expansive soils with double porosity

  • Jian Li
  • ChengGang Zhao
  • GuoQing Cai
  • Saman Asreazad
  • Xi Frank Xu
  • QiDi Huang
Open Access
Article Civil & Architectural Engineering

Abstract

In this paper, based on the porous media theory, the specific expressions of the total stress and the input work of unsaturated expansive soils with double porosity are proposed, and then the energy-conjugate variables are further derived. We make distinctions between the effects of capillary water and adsorbed water on the soil behaviour, as well as between the deformations of micro- and macrostructure. According to the derived input work expression and the work-energy-dissipation relations for an open multiphase thermodynamic system, we establish a thermodynamics-based modelling framework for unsaturated expansive soils with double porosity.

Keywords

double porosity unsaturated expansive soils input work energy-conjugate variables constitutive model 

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Copyright information

© The Author(s) 2013

Authors and Affiliations

  • Jian Li
    • 1
  • ChengGang Zhao
    • 1
  • GuoQing Cai
    • 1
    • 2
  • Saman Asreazad
    • 1
  • Xi Frank Xu
    • 1
  • QiDi Huang
    • 1
  1. 1.School of Civil EngineeringBeijing Jiaotong UniversityBeijingChina
  2. 2.ARC Centre of Encellence for Geotechnical Science and EngineeringThe University of NewcastleNSWAustralia

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