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TRIS Online Accession Number:00765881
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Edition:Final Report
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Abstract:The purpose of this project was to pave a test section using hot mix asphalt with roofing shingle pieces in the wearing and binder courses and to evaluate the constructability, mix properties, and performance of the pavement. The five year evaluation of the test project near Allentown plus two other test projects in 1998 provide evidence of very good pavement performance. The bituminous concrete mix was modified with shredded shingles with a maximum size of 1/2 inch (1.27 cm) which added 1% of the asphalt content. The pavement sections with asphalt shingles exhibited minimal transverse cracking and centerline joint cracking similar to the control section. The Pennsylvania Department of Transportation issued a statewide Provisional Specification titled "Reclaimed Manufacturer Asphalt Roofing Shingles in Plant-Mixed Bituminous Concrete Courses" on March 15, 1999. New manufacturer asphalt roofing shingle scrap including tab punchouts can be successfully incorporated in bituminous concrete pavements if the shingles are shredded to 100% passing the 3/4 inch (1.91 cm) sieve. To fully take advantage of the potential to replace a portion of the asphalt and therefore, reduce mix costs, shingles should be shredded to 100% passing minus 1/2 inch (1.27 cm) sieve.
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