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Product (P1) from project 0-6738 : performance studies and future directions for mixes containing RAP and RAS.
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  • Abstract:
    In recent years both reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) have been widely used in asphalt mixes by the asphalt paving industry in Texas. The use of RAP and RAS can save tax payers’ money, and it is also good for the environment. Several factors including RAP/RAS processing, mix design, plant production, and field construction are critical to have a durable RAP/RAS mix with good field performance. The researchers at the Texas A&M Transportation Institute (TTI), collaborating with the Texas Department of Transportation (TxDOT), the Texas Asphalt Pavement Association (TxAPA), and contractors, developed best practices for best use of RAP/RAS in asphalt mixes in terms of:

    • RAP/RAS handling (processing and stockpile management).

    • RAP/RAS mix design.

    • RAP/RAS production.

    • RAP/RAS construction.

    Additionally, the researchers, collaborating with TxDOT and TxAPA organized a RAP/RAS best practice workshop held at the TxAPA headquarter in Buda, Texas, on Jan. 8, 2013. More information about the workshop will be presented in a later part of the product.

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