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    Volume 40, Issue 6 (November 2017)

    Manufacture of Bonded Granular Soil Using X-Ray CT Scanning and 3D Printing

    (Received 31 October 2016; accepted 30 March 2017)

    Published Online: 2017

    CODEN: GTJODJ

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    Abstract

    This paper describes the use of X-ray tomography imaging of natural gravel specimens to create repeatable assemblages of bonded gravel-size resin specimens using a 3D printer. The paper describes how the resulting resin-based surrogate specimens have particle geometry and interparticle bonds that are a function of the original scanning image resolution and 3D printer resolution. Results of conventional triaxial compression testing of original source gravel specimens and constructed bonded specimens are compared. While there are quantitative differences in behavior between unbonded source and bonded duplicate specimens, the surrogate specimens are shown to have macroscale mechanical behavior that may be considered typical of some granular soils. The ability to generate identical surrogate bonded granular specimens with the same particle arrangement holds promise to remove the influence on geotechnical laboratory testing outcomes due to the unavoidable structural variation in specimens of natural granular assemblages.

    Author Information:

    Matsumura, Satoshi
    Port and Airport Research Institute (PARI), Yokosuka,

    Kobayashi, Takaaki
    Port and Airport Research Institute (PARI), Yokosuka,

    Mizutani, Takaaki
    Port and Airport Research Institute (PARI), Yokosuka,

    Bathurst, Richard J.
    Port and Airport Research Institute (PARI), Yokosuka,


    Stock #: GTJ20160273

    ISSN:0149-6115

    DOI: 10.1520/GTJ20160273

    Author
    Title Manufacture of Bonded Granular Soil Using X-Ray CT Scanning and 3D Printing
    Symposium ,
    Committee D18