An Oedometer for Studying Combined Effects of Temperature and Suction on Soils

    Volume 33, Issue 2 (March 2010)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Published Online: 21 January 2010

    Page Count: 11


    François, Bertrand
    Laboratory of Soil Mechanics (LMS), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne,

    Laloui, Lyesse
    Laboratory of Soil Mechanics (LMS), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne,

    (Received 29 January 2009; accepted 14 December 2009)

    Abstract

    This paper reports the development of an advanced thermo-hydro-mechanical (THM) oedometer in order to characterize the behavior of soils under combined non-isothermal and unsaturated conditions. The simultaneous control of temperature, suction, and stress states within the sample required rigorous calibration. This THM oedometer accommodates samples 80 mm in diameter and 23 mm in height. The applied vertical stresses can reach values of up to 1 MPa, the controlled temperature ranges from 20 to 80°C, and the applied suction is up to 500 kPa. The paper thoroughly discusses the calibration of the device and presents some results of tests performed on sandy silt.


    Paper ID: GTJ102348

    DOI: 10.1520/GTJ102348

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    Author
    Title An Oedometer for Studying Combined Effects of Temperature and Suction on Soils
    Symposium , 0000-00-00
    Committee D18