Measurement of Uniformity and Anisotropy in Granular Materials

    Volume 23, Issue 4 (December 2000)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Page Count: 9


    Muhunthan, B
    Associate professor, Washington State University, Pullman, WA

    Masad, E
    Assistant professor, Washington State University, Pullman, WA

    Assaad, A
    Associate professor, University of Jordan, Amman,

    (Received 1 March 1999; accepted 5 June 2000)

    Abstract

    A new apparatus to conduct impregnation of granular materials has been developed to facilitate specimen preparation for microstructure observations. New experimental and analytical procedures have been presented to quantify the nonuniformity and anisotropy of granular materials. The nonuniformity of porosity distribution within a specimen was evaluated using imaging techniques. The anisotropy analysis consisted of the directional distribution of local porosity and orientation of solids and voids.

    The procedures have been used to study the fabric of granular specimens prepared from Ottawa sand, silica sand, and spherical glass beads. The relation between directional porosity and the preferred orientation of granular particles and voids was found to be highly dependent on their angularity and elongation.


    Paper ID: GTJ11063J

    DOI: 10.1520/GTJ11063J

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    Author
    Title Measurement of Uniformity and Anisotropy in Granular Materials
    Symposium , 0000-00-00
    Committee D18