Warm-mix asphalt: The wave of the future
Warm-mix asphalt is the generic term for a variety of technologies that allow the producers of hot-mix asphalt pavement material to lower the temperatures at which the material is mixed and placed on the road. Reductions of 50 to 100 degrees Fahrenheit have been documented. Such drastic reductions have the obvious benefits of cutting fuel consumption and decreasing the production of greenhouse gases. In addition, potential engineering benefits include better compaction on the road, the ability to haul paving mix for longer distances, and the ability to pave at lower temperatures.
Read more about the benefits of Warm Mix Asphalt 
Upcoming Events
- July 16-18 - 2008 Pavement Performance Prediction Symposium, Laramie, WY
The symposium, presented by Western Research Institute in cooperation with the Federal Highway Administration, is dedicated to the topic of recycled and warm mix asphalt pavements. For more information, contact Steve Salmans at WRI, or call 307-721-2306. Visit website.
- July 27-30 - NAPA's Midyear Meeting
The inaugural meeting of NAPA's Warm-Mix Asphalt Task Force will take place at NAPA's Midyear Meeting in Colorado Springs, Colorado. Learn more.
- November 11-13 - International Conference on WMA
The International Conference on Warm Mix Asphalt will be held in Nashville, Tennessee. View the flyer.
Past Events
- May 7, 2008 - Caltrans District 5 Warm-Mix Asphalt Innovation Project Open House and WMA Workshop
This event was held at Morro Bay Community Center Auditorium in Morro Bay, CA. It included classroom sessions and a site visit. You may view the presentations here.
- May 6, 2008 - Warm-Mix Asphalt Technical Working Group Meeting
The FHWA/NAPA Warm-Mix Asphalt Technical Working Group met at The Cliffs Resort, Pismo Beach, CA, to develop a draft WMA specification with respect to materials, performance, and construction.
- January 28-29, 2008 - NAPA's Annual Meeting
Workshop sessions on warm mix focused on the state of the practice. Presentations are now available here.
- December 12-13, 2007 - WMA Technical Working Group Meeting
Many informative sessions were held on warm-mix asphalt.
View the presentations from this meeting here.
