Asphalt Rubber Technology Information Center
Laboratory Behavior, Performance Prediction, and Cost-Effectiveness of Asphalt-Rubber Concrete in
Airport Pavements
Hoyt, Denise M. and Lytton, Robert L.
August, 1989
Cost, Performance
Key Words:

A research project was performed which indicated that ground tire rubber added to asphalt concrete significantly
improves the material parameters which are generally used to evaluate an asphalt concrete mix for use in pavement.  
The study also indicated that the life of a pavement built with asphalt-rubber concrete and experiencing high or low
temperature conditions might be greatly increased over that of an asphalt concrete pavement under the same conditions.
In this study, a “good” asphalt-rubber concrete mix and a “good” asphalt concrete mix were designed and tested in the
laboratory and the material properties were compared.  The testing program included Marshall stability, density and air
voids content, resilient modulus, bean fatigue testing, overlay testing for fracture behavior, creep testing for
temperature susceptibility characteristics, and repeated load testing for permanent deformation properties.  In general,
the test results showed that the asphalt-rubber concrete is less temperature susceptible that the asphalt concrete.  Also,
at a low temperature, the rubber appears to make the asphalt concrete more resistant to cracking.
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