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" Every year about 45 million tons of old asphalt get torn up and pulverized in the U.S. Most of it winds up in landfills. Meanwhile, 81 million tons of fly ash and slag are produced as coal is burned in power plants. Quikrete has started putting that waste to work in DIY construction supplies. By using recycled roadway material in its Asphalt Cold Patch and coal-burning byproducts in its Green Concrete Mix, the company increases efficiency while helping to clean up other people&amp;#039;s messes. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/home/outdoor-projects/how-to/a4519/4332409/>