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A greener alternative to hot-mix asphalt

Green technologies help protect the environment, but are they a boon to business? In the past, many companies and organizations balked at the cost. But not all planet-friendly practices dent the bottom line; indeed, some can save costs and yield added revenue. An example, says UMD civil and environmental engineering professor Qingbin Cui, is the use of recycled highway materials to build or replace pavement.