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Use Of Reclaimed Asphalt Pavements (RAP) In Airfields HMA Pavements
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This report documents the results and findings of the AAPTP Project No. 05-06: Use of Reclaimed Asphalt Pavements (RAP) in Airfields HMA Pavements. The report includes a review of current technology in RAP pavements and its application in highway and airfield pavements. Additionally, the report includes the current highway specifications on the use of RAP and a mechanistically based method to transfer the RAP technology that has been successfully used on highway pavements into the design and specification systems for RAP on airport pavements. Review of in-service airfield pavements was conducted as part of this study. Furthermore, the report includes an evaluation of the impact of RAP on the performance life of HMA airfield pavements under three actual airport traffic mixes of a large hub, small hub, and general aviation. The Life cycle cost analysis used the characteristics and mechanical properties of HMA mixtures in the LEDFAA1.3 airfield pavement design software to compare the estimated performance life of HMA pavements with and without RAP materials. Finally, sections 401-3.3 and 403-3.3 of FAA’s P-401 and P-403 specifications, respectively, on RAP were reviewed and recommendations were made based on the findings of the research effort conducted in this project.