FHWA reports on international scan focused on warm-mix asphalt.
According to the report, Warm-Mix Asphalt: European Practice (FHWA-PL-08-007), the benefits of WMA technologies include reduced fuel usage and emissions by the machines used to lay the asphalt when compared to hot-mix asphalt (HMA); improved field compaction, which can facilitate longer haul distances for the WMA and cool weather paving; and better working conditions compared to HMA due to the lower mix temperatures required by WMA that provide a more comfortable working environment.
Although adopting WMA for use in the United States will require modifications to existing materials and production practices, the scan team reported no long-term barriers to using the technology in this country. With additional research and trials, the team expects that State DOTs will adopt WMA, as an alternative to HMA.
To view the report, visit http://international.fhwa.dot.gov/pubs/pl08007/pl08007.pdf.
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|Title Annotation:||Technical News|
|Article Type:||Brief article|
|Date:||Sep 1, 2008|
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