What is Warm Mix Asphalt?

Warm Mix Asphalt (WMA) is a term being used to describe several different technologies that are being used to produce hot-mix asphalt (HMA) paving mixtures at significantly lower mixture and placement temperatures. Potential advantages of these technologies include: lower energy consumption; lower fumes, odors and emissions; easier placement and less aging of the binder from exposure to heat. For a complete description of this developing technology visit www.warmmixasphalt.org or the FHWA site http://www.fhwa.dot.gov/pavement/asphalt/wma.cfm

You will also be interested in the discussions of Warm Mix Asphalt in the Spring, 2006 issue of Ohio Asphalt magazine and you will want to view the presentations presented at the Ohio "Warm Mix Asphalt Technologies Field Trial/Open House, September 12, 2006.