Evotherm Warm Mix

Benefits

• Evotherm requires no equipment changes at the plant or job site.  To reduce mix temperatures, simply meter the water-based Evotherm materials into your plant.
• 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 your 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, including: 

• Nearly 50 percent decrease in carbon dioxide greenhouse gasses
• 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

• Aurora Trial (.pdf)
• Calgary Trial (.pdf)
• Ramara Trial (.pdf)

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 the performance of Evotherm visit the NCAT Pavement Test Track website and follow the link to rutting. 

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.