Improved Mix Design, Evaluation, and Materials Management Practices for Hot Mix Asphalt with High Reclaimed Asphalt Pavement Content (2013) / Chapter Skim
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1 Improved Mix Design, Evaluation, and Materials Management Practices for Hot Mix Asphalt with High Reclaimed Asphalt Pavement Content Recycling of asphalt pavements is one of the great success stories of the highway building industry. Although the use of recycled asphalt in new pavements dates back almost 100 years, it did not become a common practice until the late 1970s when asphalt binder prices skyrocketed as a result of the Arab oil embargo.
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2performance-related tests to further evaluate the mix designs for their susceptibility to common forms of distress. Appendix D presents several important findings and recommendations.
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3 whether or not the lower temperature might affect the activation of the RAP binder. The results showed that the WMA additive and lower temperatures had a negligible effect on the mix's volumetric properties and tensile strength ratio (TSR)
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4had higher stiffness and lower m-values, which theoretically should result in more cracking. However, analysis of the critical cracking temperatures for the climates where the materials were obtained indicated that the high RAP content mixes would perform similarly to the corresponding virgin mixes with regard to thermal cracking.
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