Benefits

• Evotherm requires no equipment changes at the plant or job site.  To reduce mix temperatures, the water-based Evotherm is metered into existing materials.
• Evotherm mixes have the same aggregates, volumetrics and binder content as traditional hot mixes.
• Temperature and energy requirements are lower with Evotherm. 
• Evotherm drops into existing HMA job mix formula.
• Workability and compaction at reduced temperatures are easier than HMA, especially for coarse mixes and polymer modified asphalts.
• Traffic is returned immediately after compaction

Environmental Advantages

Evotherm has consistently demonstrated major reductions in emissions compared to hot-mix asphalt: 

• A nearly 50 percent decrease in carbon dioxide greenhouse gasses
• A nearly 60 percent reduction in nitrogen oxides that lead to photochemical smog
• More than 80 percent drop in acid rain-causing sulfur dioxide

Energy Conservation and Savings

There are many variables associated with energy usage, but Evotherm projects have had documented energy savings up to 55 percent.  Warm-mix paving projects have an initial three to seven percent difference in total job costs, however, these costs are off-set by fuel cost reductions, proportionately longer pavement lifecycle, and decreased maintenance requirements.

Engineering Reports

The following trials were conducted in Canada and led by McAsphalt Industries. The outcome of the trials are detailed in the reports below and include specific information on Evotherm's sound performance and ease of use. 

• Aurora Ontario Trial (.pdf)
• City of Calgary Trial (.pdf)
• Ramara Township, Ontario Trial (.pdf)

To learn more, download a technical brochure on how Evotherm works.

Evotherm on the Test Track

The National Center for Asphalt Technology's Pavement Test Track, based at Auburn University, is broken into 200 foot test sections designed to test performance of certain asphalt mixes.  Evotherm is being test on the track in sections E9 and E10.  To view Evotherm performance on the test track, click here. 

Additional information on Evotherm can be found at the National Asphalt Paving Association and Federal Highway Administration. 

Photos

Pictured above is an Evotherm paving job site in France.