Fly ash, a byproduct of coal-burning electric power plants, could save billions of dollars if used in the repairing of U.S. bridges and roads, researchers say.

Using fly ash to coat the concrete used to rebuild America’s infrastructure could extend the life of those roads and bridges by decades, saving billions of dollars of taxpayer money, scientists told a meeting of the American Chemical Society in Anaheim, Calif., Tuesday.

(READ more from United Press International)

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