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    Analysis of a Vane Test Based on Effective Stress

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    A laboratory investigation has been made into rate effect on undrained strengths of a reconstituted clay. A “cylinder shear” apparatus has been developed recently to examine shear characteristics of the vane test in a simplified manner. A suite of laboratory tests has been carried out with this apparatus that included pore-pressure measurements on the shear surface. A series of laboratory vane tests has also been performed to be compared with those results. These test results allowed an interpretation to be made of the vane test rate effect in terms of effective stress and within the framework of the original Cam clay model. The undrained strength anisotropy of the clay was also examined in tests in which specimens from the same block sample, but cut out with different angles relative to the plane of sedimentation, were sheared in a direct shear device.


    laboratory vane shear tests, direct shear tests, effective stress, constitutive, equation

    Author Information:

    Karube, D
    Associate professor, Kobe University, Kobe,

    Shibuya, S
    Research assistant, Institute of Industrial Science, University of Tokyo, London,

    Baba, T
    Engineer, Shimizu Construction Company, Ltd., Tokyo,

    Kotera, Y
    Government officer, Osaku Local Government, Osaka,

    Committee/Subcommittee: D18.02

    DOI: 10.1520/STP10326S