A New Laser Sensor Volume Measurement System for the Triaxial Testing of Unsaturated Soils

    Volume 35, Issue 5 (September 2012)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Published Online: 1 August 2012

    Page Count: 5


    Zhang, X.
    Faculty of Engineering, Science and the Built Environment, London South Bank Univ., SE1 0AA,

    Mavroulidou, M.
    Faculty of Engineering, Science and the Built Environment, London South Bank Univ., SE1 0AA,

    Sutton, J.
    Global Digital Systems Ltd, Hook, Hampshire,

    Cabarkapa, Z.
    Geotechnical Consulting Group, London,

    Gunn, M. J.
    Faculty of Engineering, Science and the Built Environment, London South Bank Univ., SE1 0AA,

    (Received 12 December 2011; accepted 14 May 2012)

    Abstract

    The paper demonstrates a novel non-contacting volume change measurement system for triaxial soil testing. The system uses an ultra high accuracy laser displacement sensor that measures water volume changes resulting from the volume change of the specimen during testing. The paper presents the design, working principles, system calibrations, and the validation of the system through comparative measurements of volume changes of soil specimens during triaxial shearing, against results of conventional volume measurement techniques.


    Paper ID: GTJ104613

    DOI: 10.1520/GTJ104613

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    Author
    Title A New Laser Sensor Volume Measurement System for the Triaxial Testing of Unsaturated Soils
    Symposium , 0000-00-00
    Committee D18