ARIZONA STUDY SHOWS MOST EFFECTIVE ASPHALT PAVEMENT REHAB METHODS

Five-year follow-up tests were performed by the Arizona Transportation Research Center (ATRC) to evaluate various rehabilitation strategies for asphalt concrete pavements. A Specific Pavement Study (SPS-5), Rehabilitation of Asphalt Concrete Pavements--part of the Strategic Highway Research Program--was designed to determine the additional pavement life that could be expected from a variety of asphalt concrete pavement rehabilitation methods. This article describes the 11 experimental and control pavement sections, the rehabilitation strategies applied, and the results of the evaluations. The test sections will be monitored in the future by the ATRC, including profilometer testing, deflection testing, and distress surveys.