Volume 17, Issue 4 (December 1994)

    Development of a Transparent Material to Model the Geotechnical Properties of Soils

    CODEN: GTJOAD

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    Abstract

    Measurement of three-dimensional deformation patterns and flow characteristics within a soil continuum are usually limited by the fact that soil sensors do not provide a continuous image of the measured continuum. Additionally, soil sensors exhibit static and dynamic characteristics that are different from those of the surrounding soils and therefore can change the response of the measured continuum. Tests conducted with a transparent material which has properties that closely model the geotechnical properties of natural soils can potentially circumvent these experimental problems if the response of a model transparent continuum can be measured using nonintrusive optical visualization techniques.

    This paper demonstrates the feasibility of producing transparent materials which exhibit macroscopic properties representative of the geotechnical properties of natural soils. The transparent “soils” discussed in this paper were made by consolidating suspensions of amorphous silica in liquids with matching optical refractive indices. The measured shear strengths and permeabilities of the transparent soils are characteristic of natural clays and silts. The stress-strain response of transparent soils is characterized by large strains during consolidation and shear.


    Author Information:

    Iskander, MG
    Graduate research assistant, The University of Texas at Austin, Austin, TX

    Lai, J
    Graduate research assistant, The University of Texas at Austin, Austin, TX

    Oswald, CJ
    Senior research engineer, Engineering and Materials Sciences Division, Southwest Research Institute, San Antonio, TX

    Mannheimer, RJ
    institute scientist, Fuels and Lubricants Research Division, Southwest Research Institute, San Antonio, TX


    Stock #: GTJ10303J

    ISSN: 0149-6115

    DOI: 10.1520/GTJ10303J

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    Author
    Title Development of a Transparent Material to Model the Geotechnical Properties of Soils
    Symposium , 0000-00-00
    Committee D18