Asphalt Mixture Performance-Related Specifications and Performance-Engineered Mix Design
Dr. Y. Richard Kim
North Carolina State University
Friday, December, 14th
2:00 pm
Room 2.3 (Viale Risorgimento 2, Bologna)
Abstract: Transportation Research Circular E-C137 defines performance-related specifications (PRS) as “quality assurance (QA) specifications that describe the desired levels of key materials and construction quality characteristics that have been found to correlate with fundamental engineering properties that predict performance.” Furthermore, it states, “True PRS … employ the quantified relationships containing the characteristics to predict as-constructed pavement performance. They thus provide the basis for rational acceptance/pay adjustment decisions.” This keynote presentation summarizes the test methods, models, and framework of such PRS that are being developed under the sponsorship of the United States Federal Highway Administration (FHWA). In addition, the framework of the performance-engineered mix design (PEMD) method, which serves an essential component of the PRS, will be presented. This keynote presentation concludes by proposing the PRS and PEMD together as a foundation to integrate asphalt mixture design and construction QA specifications.