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    Volume 42, Issue 4 (July 2019)

    The Development of a Micromechanical Apparatus Applying Combined Normal–Shear–Bending Forces to Natural Sand Grains with Artificial Bonds

    (Received 12 December 2017; accepted 11 May 2018)

    Published Online: 20 September 2018

    CODEN: GTJODJ

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    Abstract

    Natural soils are often cemented, and there has been a need to better understand and properly model their behavior for the safe design and assessment of critical infrastructure. This necessitates the study of cemented soils at the scale of the grain. In this study, a new-generation apparatus is presented that is capable of conducting complex load path tests on two natural sand grains cemented with an artificial bonding component. Thus, the apparatus gives the opportunity to obtain insights into the micromechanics of cemented soils/weak rocks and contribute to the development of more accurate models to be utilized in the discrete element analysis of geomaterials. Apart from the presentation of the major technical features of the new apparatus, a description of the methods which were used for specimen preparation and mounting, as well as a preliminary set of experiments, are presented and discussed in this note.

    Author Information:

    Wang, Wanying
    Civil Engineering, Guangdong University of Technology, Guangzhou Universityformerly City University of Hong Kong, Guangzhou, PanyuKowloon Tong, Kowloon, Hong Kong SAR

    Coop, Matthew R.
    Department of Civil, Environmental and Geomatic Engineering, University College London, London,

    Senetakis, Kostas
    Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR,


    Stock #: GTJ20170453

    ISSN:0149-6115

    DOI: 10.1520/GTJ20170453

    Author
    Title The Development of a Micromechanical Apparatus Applying Combined Normal–Shear–Bending Forces to Natural Sand Grains with Artificial Bonds
    Symposium ,
    Committee D18