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    A Unique Critical State for Sand?

    Source: Journal of Geotechnical and Geoenvironmental Engineering:;1998:;Volume ( 124 ):;issue: 011
    Author:
    Michael A. Mooney
    ,
    Richard J. Finno
    ,
    M. Gioacchino Viggiani
    DOI: 10.1061/(ASCE)1090-0241(1998)124:11(1100)
    Publisher: American Society of Civil Engineers
    Abstract: The development of localized strains (shear banding) in soils near peak stress levels and the subsequent continued deformation within shear bands during observed softening render important issues such as critical state difficult to investigate. The determination and overall validity of critical state behavior in sand is of considerable importance, as it provides the basis both for failure criteria/postfailure behavior of many constitutive models and for stability analysis. A series of drained plane-strain experiments on sand specimens with detailed local analysis was carried out to investigate the evolution of stress state and void ratio, as well as the uniqueness of critical state. Persistent shear bands form at the peak effective stress ratio; subsequent strain softening behavior occurs in concert with localized deformation with the shear band. A unique critical stress state was found to exist for a given confining stress; however, the test results indicate that there is no unique relationship between void ratio and confining stress at the critical state.
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      A Unique Critical State for Sand?

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/72032
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    • Journal of Geotechnical and Geoenvironmental Engineering

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    contributor authorMichael A. Mooney
    contributor authorRichard J. Finno
    contributor authorM. Gioacchino Viggiani
    date accessioned2017-05-08T22:08:06Z
    date available2017-05-08T22:08:06Z
    date copyrightNovember 1998
    date issued1998
    identifier other31524668.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/72032
    description abstractThe development of localized strains (shear banding) in soils near peak stress levels and the subsequent continued deformation within shear bands during observed softening render important issues such as critical state difficult to investigate. The determination and overall validity of critical state behavior in sand is of considerable importance, as it provides the basis both for failure criteria/postfailure behavior of many constitutive models and for stability analysis. A series of drained plane-strain experiments on sand specimens with detailed local analysis was carried out to investigate the evolution of stress state and void ratio, as well as the uniqueness of critical state. Persistent shear bands form at the peak effective stress ratio; subsequent strain softening behavior occurs in concert with localized deformation with the shear band. A unique critical stress state was found to exist for a given confining stress; however, the test results indicate that there is no unique relationship between void ratio and confining stress at the critical state.
    publisherAmerican Society of Civil Engineers
    titleA Unique Critical State for Sand?
    typeJournal Paper
    journal volume124
    journal issue11
    journal titleJournal of Geotechnical and Geoenvironmental Engineering
    identifier doi10.1061/(ASCE)1090-0241(1998)124:11(1100)
    treeJournal of Geotechnical and Geoenvironmental Engineering:;1998:;Volume ( 124 ):;issue: 011
    contenttypeFulltext
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