Reclaimed Manufacturer Asphalt Roofing Shingles in Asphalt Mixtures

摘要

The purpose of this project was a pave a test section using hot mix asphalt with211u001eroofing shingle peices in the wearing and binder courses and to evaluate of the 211u001etest project near Allentown plus two other test projects in 1998 provide evidence 211u001eof very good pavement performance. The bituminous concrete mix was modified with 211u001eshredded shingles with a maximum size of 1/2 inch which added 1% of the asphalt 211u001econtent. The Department issued a statewide Provisional Specification titled 211u001e'Reclaimed Manufacturer Asphalt Roofing Shingles in Plant-Mixed Bituminous 211u001eConcrete Courses' on March 15, 1999. New manufacturer asphalt roofing shingle 211u001escrap including tab punch-outs can be successfully incorporated in bituminous 211u001econcrete pavements if the shingles are shredded to 100% passing the 3/4 inch 211u001esieve. To fully take advantage of the potential to replace a portion of the 211u001easphalt and therefore, reduce mix costs, shingles should be shredded to 100% 211u001epassing minus 1/2 inch sieve.