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    The Use of Ground Vulcanized Rubber in Asphalt

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    In the early 1960's a concept was developed in Arizona primarily to overcome the problem of the early reflection of fatigue cracking in asphalt pavements. The concept was based on a composite material of asphalt cement and a high percentage of ground vulcanized rubber from recycled tires. The resulting asphalt rubber was used initially or special pavement surface treatments, but usage has expanded to interlayers for overlays, for crack and joint sealing, membraning for the control of expansive clays, and very recently as a binder for asphalt concrete mixtures for thin interlayers and overlays. Laboratory research and field experimentation continue to be directed toward achieving a better understanding of the chemical and physical properties of this asphalt rubber material and their relationship to field performance.


    asphalt cements, rubbers, rubberized asphalt, pavements, reflection cracking, membranes, expansive clays, tests

    Author Information:

    Huffman, JE
    Director-Technical Services, Sahuaro Petroleum and Asphalt Co., Phoenix, Ariz.

    Committee/Subcommittee: D04.40

    DOI: 10.1520/STP38361S