Dynamic Behavior of Sand/Rubber Mixtures. Part I: Effect of Rubber Content and Duration of Confinement on Small-Strain Shear Modulus and Damping Ratio

    Volume 9, Issue 2 (February 2012)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 25 October 2011

    Page Count: 19


    Anastasiadis, Anastasios
    Aristotle Univ.,

    Senetakis, Kostas
    Aristotle University of Thessaloniki,

    Pitilakis, Kyriazis
    Aristotle Univ.,

    Gargala, Chrysanthi
    Aristotle Univ.,

    Karakasi, Iphigeneia
    Aristotle Univ.,

    (Received 7 December 2010; accepted 27 September 2011)

    Abstract

    The paper examines the small-strain dynamic properties of mixtures composed of sandy soils with recycled tire rubber. For this purpose, the experimental results stemming from a torsional resonant column testing program on twenty four [24] saturated and dry specimens are analyzed. The percentages of rubber used range between 0 and 35 % by mixture weight. GO values increase whereas DTO values decrease systematically as the content of rubber decreases and the mean confining pressure increases. Based on the experimental results we propose an analytical relationship for the estimation of GO, which is expressed in terms of an equivalent void ratio that considers the volume of rubber solids as part of the total volume of voids, along with an analytical relationship for the estimation of DTO. Finally, the effect of the specimen’s size and the duration of confinement on the initial shear modulus and damping ratio of the mixtures are also discussed.


    Paper ID: JAI103680

    DOI: 10.1520/JAI103680

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    Title Dynamic Behavior of Sand/Rubber Mixtures. Part I: Effect of Rubber Content and Duration of Confinement on Small-Strain Shear Modulus and Damping Ratio
    Symposium , 0000-00-00
    Committee D18