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    Volume 23, Issue 3 (September 2000)

    Dynamic Properties of Granulated Rubber/Sand Mixtures

    (Received 30 June 1998; accepted 12 January 2000)

    Published Online: 01 September 2000


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    Processed waste tires mixed with soils are applicable in lightweight fills for slopes, retaining walls, and embankments that may be subjected to seismic loads. Rubber's high damping capacity permits consideration of granulated rubber/soil mixtures as part of a damping system to reduce vibration. The dynamic properties of granulated rubber/soil mixtures are essential for the design of such systems. This research investigates the shear modulus and damping ratio of granulated rubber/sand mixtures using a torsional resonant column. Specimens were constructed using different percentages of granulated tire rubber and Ottawa sand at several different percentages. The maximum shear modulus and minimum damping ratio are presented with the percentage of granulated rubber. It is shown that reference strain can be used to normalize the shear modulus into a less scattered band for granulated rubber/sand mixtures. The normalized shear modulus reduction for 50% granulated rubber (by volumme) is close to a typical saturated cohesive soil. Empirical estimation of maximum shear modulus of soil/rubber mixtures can be achieved by treating the volume of rubber as voids.

    Author Information:

    Feng, Z-Y
    Geotechnical engineer, Moh and Associates, Inc., Taipei Hsien, Taiwan

    Sutter, KG
    Associate professor, Rose-Hulman Institute of Technology, Terre Haute, IN

    Stock #: GTJ11055J


    DOI: 10.1520/GTJ11055J

    Title Dynamic Properties of Granulated Rubber/Sand Mixtures
    Symposium ,
    Committee D18