HVS Evaluation Of Thin Asphalt Overlays On Composite Pavements

The primary goal of the proposed project is to identify and predict the expected life of thin asphalt overlay treatments used for rehabilitating and preserving portland cement concrete (PCC) pavements. The specific objectives to fulfill the primary goal are as follows: (1) Conduct a comprehensive literature review to identify potential distresses in thin overlays, successes and challenges of different types of thin overlay treatments and performance prediction models. (2) Evaluate the current conditions of PCC pavement sections in the state of New Jersey (NJ) using field distress surveys or data obtained from New Jersey Pavement Management System (NJPMS) to identify the spectrum of conditions on which thin asphalt overlays might be applied. (3) Identify the most common thin asphalt overlay mixes used for rehabilitating/preserving PCC pavement in NJ and the major factors that influence performance of these mixes. (4) Conduct laboratory mix design and laboratory performance evaluation of up to four asphalt overlay mixes commonly used in NJ. (5) Construct six full scale PCC pavement sections with up to four thin asphalt overlay treatments in the Rowan University Accelerated Pavement Testing Facility (RU-APTF). (6) Conduct full scale accelerated pavement loading using the Rowan University Heavy Vehicle Simulator (RU-HVS). (7) Monitor pavement performance (reflective cracking, rutting, International Roughness Index (IRI), and modulus values using Heavy Weight Deflectometer (HWD) of the thin asphalt overlays). (8) Analyze results and recommend life expectancy for each of the thin asphalt overlay treatments evaluated.