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    Modelling of change in permeability induced by dilatancy for brittle geomaterials

    New search for: Rahal, S.
    New search for: Sellier, A.
    New search for: Verdier, J.

    HighlightsThe computed permeability increases in function of plastic dilatancy.The induced anisotropic permeability tensor is computed according to the directions of non-isotropic expansions.The crack spacing in geomaterials decreases when the size of “inclusions” decreases.

    AbstractThe safety and durability of concrete structures are significantly affected by cracking. This structural disorder provides a preferential path for the penetration of fluids and may accelerate the material deterioration. This study investigates the mechanical damage and permeability interactions in geomaterials subjected to compressive stress inducing cracking. The development reported here is implemented within an elasto-plastic damage model able to compute plastic dilatancy. The model assumes an initial isotropic permeability tensor which becomes anisotropic with non-isotropic expansion. The model capabilities are highlighted by simulating uniaxial and triaxial compression tests. The simulation results are compared with experimental data.

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    Modelling of change in permeability induced by dilatancy for brittle geomaterials

    New search for: Rahal, S.
    New search for: Sellier, A.
    New search for: Verdier, J.

    HighlightsThe computed permeability increases in function of plastic dilatancy.The induced anisotropic permeability tensor is computed according to the directions of non-isotropic expansions.The crack spacing in geomaterials decreases when the size of “inclusions” decreases.

    AbstractThe safety and durability of concrete structures are significantly affected by cracking. This structural disorder provides a preferential path for the penetration of fluids and may accelerate the material deterioration. This study investigates the mechanical damage and permeability interactions in geomaterials subjected to compressive stress inducing cracking. The development reported here is implemented within an elasto-plastic damage model able to compute plastic dilatancy. The model assumes an initial isotropic permeability tensor which becomes anisotropic with non-isotropic expansion. The model capabilities are highlighted by simulating uniaxial and triaxial compression tests. The simulation results are compared with experimental data.

    Access

    Check access
    Check availability in my library
    Order at Subito €

    Modelling of change in permeability induced by dilatancy for brittle geomaterials

    New search for: Rahal, S.
    New search for: Sellier, A.
    New search for: Verdier, J.

    HighlightsThe computed permeability increases in function of plastic dilatancy.The induced anisotropic permeability tensor is computed according to the directions of non-isotropic expansions.The crack spacing in geomaterials decreases when the size of “inclusions” decreases.

    AbstractThe safety and durability of concrete structures are significantly affected by cracking. This structural disorder provides a preferential path for the penetration of fluids and may accelerate the material deterioration. This study investigates the mechanical damage and permeability interactions in geomaterials subjected to compressive stress inducing cracking. The development reported here is implemented within an elasto-plastic damage model able to compute plastic dilatancy. The model assumes an initial isotropic permeability tensor which becomes anisotropic with non-isotropic expansion. The model capabilities are highlighted by simulating uniaxial and triaxial compression tests. The simulation results are compared with experimental data.

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    Title:

    Modelling of change in permeability induced by dilatancy for brittle geomaterials

    Contributors:

    Rahal, S. (author) / Sellier, A. (author) / Verdier, J. (author)

    Published in:

    Construction and Building Materials ; 125 ; 613-624

    Publication date:

    2016-08-01

    Size:

    12 pages

    ISSN:

    0950-0618

    DOI:

    https://doi.org/10.1016/j.conbuildmat.2016.08.002

    Type of media:

    Article (Journal)

    Type of material:

    Electronic Resource

    Language:

    English

    Keywords:

    Permeability , Cracking , Dilatancy , Anisotropy , FEM

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