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According to National Asphalt pavement association, when recycled asphalt pavement and shingles are reprocessed into new pavement mixtures, the liquid asphalt binder in the recycled material is reactivated, reducing the need for virgin asphalt binder. Using reclaimed materials also reduces demands on aggregate resources. Warm-mix asphalt technologies allow asphalt pavements to be produced at lower temperatures, which means reduced energy demands, as well as lower emissions during production and paving.
Asphalt pavement is 100% recyclable and can be made to perform better the second or even third time around. Asphalt roads are removed, recrushed, mixed with additional aggregate and fresh asphalt cement, remixed and placed back on the road. The hot mix asphalt industry also uses the following recycled materials: slag from the steel-making process, roofing shingles, sand from metal-casting foundries, and rubber from old tires.
