Best Practices for RAP Use Based on Field Performance

Status:  Complete
Report Date:  04/20/2009

Summary:

Researchers examined whether asphalt pavements containing recycled asphalt pavement in the wear course are prone to early failures. They conducted a survey of county engineers and tested samples from selected projects for dynamic modulus and other properties. Results showed that field performance of pavements depended more on the low-temperature performance grade of binders and the stiffness of underlying layers than on the percentage of RAP in the wear course mixture.

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