The hot mix asphalt industry is a national leader in recycling its product – and others.
Twice as much asphalt pavement is recycled as paper, glass, plastic and aluminum combined.

Other recycled products can also be used in making asphalt pavement.

Asphalt rubber uses 15-20% rubber from ground-up tires to make an asphalt binder.
Slag aggregate from steel production is required or allowed in states including Illinois, Indiana and Michigan for use in high-volume pavements. The slag helps improve skid resistance and is used in well-known race tracks and other high-friction applications.
Factory-reject asphalt roofing shingles are used in North Carolina and Minnesota state projects. (Used shingles from roofs are not widely recycled for this purpose.)
Foundry sand from the metals casting industry in Pennsylvania cuts the cost of sand used in making Hot Mix Asphalt by about 40 percent.