The U.S. Federal Highway Administration has released a report on an international scan that examined various technologies for reducing the temperatures at which hot-mix asphalt is mixed and compacted in Norway, Germany, Belgium, and France. The May 2007 scan explored how and why agencies were implementing warm-mix asphalt technologies, how conventional hot-mix asphalt practice differs between the United States and various European countries, and how these differences might affect potential implementation of warm-mix asphalt in the United States.

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