Grain-Size Analysis by Buoyancy Method

    Volume 20, Issue 4 (December 1997)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Page Count: 5


    Bardet, J-P
    Professor and research assistant, University of Southern California, Los Angeles, CA

    Young, J
    Professor and research assistant, University of Southern California, Los Angeles, CA

    Abstract

    A new routine experiment referred to as buoyancy analysis is proposed to determine the grain-size distribution of fine-grained soils. The buoyancy analysis is based on the sedimentation principles of the hydrometer and pipette analyses. It determines the percent by weight finer than a given grain size by measuring the buoyant weight of a 2.5-cm-diameter sphere immersed in the soil suspension. The buoyancy analysis is slightly more accurate than the hydrometer analysis, has a shorter duration, and its readings can be fed directly into a computer. It yields results identical to those of the hydrometer analysis when the sphere is immersed within the depth range of the hydrometer bulb.


    Paper ID: GTJ10414J

    DOI: 10.1520/GTJ10414J

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    Author
    Title Grain-Size Analysis by Buoyancy Method
    Symposium , 0000-00-00
    Committee D18