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WESTERN REGIONAL
SUPERPAVE CENTER
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A Laboratory Evaluation on the
use of Recycled Asphalt Pavements in HMA Mictures The laboratory experiment documented in this report was conducted to answer the following questions: Moisture sensitivity, Resistance to rutting, Resistance to fatigue cracking and Resistance to thermal cracking Available Information: Report: -A Laboratory Evaluation on
the use of Recycled Asphalt Pavements in HMA Mixtures -Laboratory Evaluation on the Use of RAP in HMA Mixes (Presentation)
Asphalt Research Consortium, Work element E2b: Design System for HMA Containing a High Percentage of RAP Material o Hypothesis: The use of RAP materials in HMA can be highly beneficial from both the economical and long-term performance aspects if the appropriate testing and analysis procedures are used to design the final mixtures. o Objectives: The overall objective of this research effort is to develop testing and analysis procedures that can be effectively used to evaluate RAP materials and optimize the performance of HMA mixtures containing RAP materials. The research effort will cover the various aspects of the design process starting with the evaluation of the RAP materials (binders and mixtures) through the mix design process and the performance evaluation of the final HMA mixture containing RAP materials. o Experimental Design: The following subtasks will be completed in order to achieve the objectives of this research effort: § Subtask E2b-1: Develop a System to Evaluate the Properties of RAP Materials · E2b-1.a: Develop a System to Evaluate the Properties of RAP Aggregates · E2b-1.b: Develop a System to Evaluate the Properties of the RAP Binder: § Subtask E2b-2: Compatibility of RAP and Virgin Binders § Subtask E2b-3: Develop a Mix Design Procedure § Subtask E2b-4: Impact of RAP Materials on Performance of Mixtures § Subtask E2b-5: Field Trials Available Information: Quarterly Progress Reports
- AAPTP Project 05-06: Use of Reclaimed Asphalt Pavements (RAP) in Airfields HMA Pavements o 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. Available Information: Final Report
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