Properties of Asphalt Mixtures Containing RAP

This project will evaluate the effect of including RAP on the overall properties of the asphalt concrete mixture. The project will look at how properties change as different percentages of RAP are added and the variation in these properties if different sources (types) of RAP and virgin materials are used. Rheological properties such as dynamic modulus, phase angle, and creep compliance will be evaluated as a function of testing time or frequency and temperature to develop master curves. These rheological properties are needed as input parameters for the AASHTO 2002 Design Guide. Additionally, the properties required for the Simple Performance Test will be measured to predict the field performance of the mixtures. Destructive testing will be performed to evaluate the strength and fatigue resistance of the various mixtures.