Asphalt Rubber Technology Information Center
Mixture Design and Performance Prediction of Crumb Rubber Modified Asphalt Concrete
Lee, Suckhong
November, 1994
Key Words:

The primary objective of this study is to evaluate the feasibility of asphalt-rubber concrete in road construction with
particular emphasis on characterization of performance-related properties of asphalt-rubber concrete and development
of pertinent guidelines for design purpose.  Specially, the objectives are to:
•  Evaluate the extent and rate of swelling of rubber tire due to chemical reaction between asphalt cement and rubber.
•  Characterize rheological properties of asphalt-rubber including viscosity, low temperature creep stiffness, and aging.
•  Evaluate and establish optimum mixture design for asphalt-rubber concrete, including both wet and dry process.
•  Characterize pertinent time-dependent mechanical properties of potential mixes of asphalt-rubber concrete, including
resilient modulus, fatigue, creep and permanent deformation.
•  Predict the performance of the selected asphalt-rubber concrete pavement under various traffic and weather
conditions using computer program KENLAYER.
•  Perform cost-effectiveness comparisons between asphalt-rubber concrete and conventional hot mix asphalt concrete
to determine if these materials should considered as economic alternative in future applications.
•  Develop mixture design procedures and design guidelines for the use of these materials in the field.
•  Develop field performance evaluation plan for future study.
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