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CONSTRUCTION & DEMOLITION: Paving Asphalt's Way for Roof-to-Road

Published Saturday, April 01, 2000

Recent technological advances have been made in recycling asphalt roofing waste, or shingles, into highway and road pavement. These include the improved ability to separate and grind shingles into paving feedstock, and the development of appropriate mix designs. In the past, problems with asphalt roofing waste reuse have included equipment design, processing inefficiencies and a lack of feedstock continuity. In the '80s, researchers tried to burn the roofing waste to recover the energy as steam. However, equipment design and production efficiencies posed significant hurdles. Also, recycling factory roofing scraps into new shingles proved problematic when manufacturers searched for ...

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