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Volume 37 Issue 8
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Abstract
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LI Wu-gang, YANG Qing, LIU Wen-hua, YANG Gang. Constitutive model for unsaturated expansive clays based on SFG model[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(8): 1449-1453. DOI: 10.11779/CJGE201508013
Citation: LI Wu-gang, YANG Qing, LIU Wen-hua, YANG Gang. Constitutive model for unsaturated expansive clays based on SFG model[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(8): 1449-1453. DOI: 10.11779/CJGE201508013
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Constitutive model for unsaturated expansive clays based on SFG model

  • Institute of Geotechnical Engineering, School of Civil Engineering, Dalian University of Technology, Dalian 116024, China

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  • Received Date: October 21, 2014
  • Published Date: August 24, 2015
    Graphical Abstract
    • Abstract
  • The framework for the behaviour of unsaturated expansive clays (G-A model) proposed by Gens and Alsono can explain the mechanical behaviour of expansive clays, in which the fundamental characteristic is the explicit consideration of microstructural and macrostructural deformations. The constitutive models based on the framework of G-A model have a lot of parameters which are hard to be determined. The constitutive model in this work deduces the neutral loading lines in the framework of SFG model. The total deformations reflect micro-level deformation, therefore it is not necessary to distinguish between micro-level and macro-level structural deformations. It allows the constitutive model for unsaturated expansive clays to reduce parameters. A mathematical formulation of the model is assessed by comparison with the experimental data available in literatures. The model predictions agree with the experimental results.
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    • References (18)
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