Crumb rubber modified asphalt with improved settling properties
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United States of America Patent
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Dec 22, 1998
Issued Date -
N/A
app pub date -
Sep 3, 1997
filing date -
Jun 10, 1996
priority date (Note) -
Expired
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Abstract
An improved asphalt having enhanced settling properties. The asphalt includes crumb rubber particles which have been treated to produce a greater number of carboxylic sites on the surface of the crumb rubber. These carboxylic sites interact with the functional groups in the asphalt, resulting in a homogeneous mixture having improved separation characteristics as well as the improved rheological properties due to the inclusion of the crumb rubber particles.
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Cited Art Landscape
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