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    Volume 38, Issue 2 (March 2015)

    Unsaturated Permeability and Retention Curve Determination From In-Flight Weight Measurements in a Bench-Scale Centrifuge

    (Received 11 June 2014; accepted 30 December 2014)

    Published Online: 2015

    CODEN: GTJODJ

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    Abstract

    Centrifuges have been used in many ways to determine permeabilities, as they can significantly shorten testing times in low-permeable soils. Typically equilibrium profiles, inflow–outflow measurements, or direct measurements from inside the sample—like from tensiometers or radioactive decay—are used. Recently, weight measurements of the sample outside the centrifuge were used effectively in an adapted setup. We present the results of the possibilities offered by doing transient weight measurements of a soil-sample during rotation in the centrifuge. We present the setup of such an experiment and how the unsaturated permeability and water retention curve can be recovered from it. This eliminates the overhead of doing measurements inside the sample.


    Author Information:

    Malengier, Benny
    Department of Textile, Ghent Univ., Ghent,

    Di Emidio, Gemmina
    Laboratory of Geotechnics, Ghent Univ., Ghent,

    Peiffer, Herman
    Laboratory of Geotechnics, Ghent Univ., Ghent,

    Ciocci, Maria-Cristina
    Department of Industrial System and Product Design, Ghent Univ., Kortrijk,

    Kišon, Pavol
    Faculty of Mathematics, Physics and Informatics, Comenius Univ. Bratislava, Mlynská dolina, Bratislava,


    Stock #: GTJ20140121

    ISSN:0149-6115

    DOI: 10.1520/GTJ20140121

    Author
    Title Unsaturated Permeability and Retention Curve Determination From In-Flight Weight Measurements in a Bench-Scale Centrifuge
    Symposium ,
    Committee D18