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Use of Scrap Rubber in Asphalt Pavement Surfaces
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
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Scrap tire rubber was mixed into an asphalt concrete wearing course to study the effect of ice disbonding from the pavement surface under traffic. Rubber contents of 0, 3, 6, and 12 by weight were studied. Initial laboratory ice disbonding test results led to the development of a new paving material, Chunk Rubber Asphalt Concrete CRAC, that uses larger pieces of rubber in a much denser asphalt concrete mix. Strength values doubled and ice disbonding performance was enhanced.
APPROVED FOR PUBLIC RELEASE