Warm mix/cold climates

MeadWestvaco (MWV) says that its Evotherm warm mix asphalt technology is now approved by the Colorado Department of Transportation (Colorado DOT) for use in statewide paving projects. The warm mix asphalt system can be used in any traditional hot-mix asphalt application, but with significantly lower temperatures required for paving application. This feature is particularly useful in Colorado's high altitude paving projects and has been tested extensively.
February 28, 2012 Read time: 2 mins
3325 MeadWestvaco (MWV) says that its Evotherm warm mix asphalt technology is now approved by the Colorado Department of Transportation (1490 Colorado DOT) for use in statewide paving projects. The warm mix asphalt system can be used in any traditional hot-mix asphalt application, but with significantly lower temperatures required for paving application. This feature is particularly useful in Colorado's high altitude paving projects and has been tested extensively.

In August 2007, CDOT and MWV began paving a portion of I-70 as an Evotherm test section near the Eisenhower and Johnson Tunnels. This paving project incurred some of the harshest environments to date where Evotherm had been applied - including 89mm of precipitation annually, much of which is frozen and equating to 508mm of snowfall. With 150-200 freeze thaw cycles annually, challenges from annual daily traffic equalling 30,000 vehicles/year on average and 10% truck traffic, this test area provided significant challenges.

CDOT said that the trial with MWV allowed it to answer lingering concerns regarding moisture susceptibility for warm mix asphalt. Even at an altitude of nearly 3,350m, the roadway paved with Evotherm is performing well. The CDOT and the National Center for Asphalt Testing (NCAT) recently published a three year project report, and Evotherm is said to have matched the performance of traditional hot mix asphalt.
Asphalt milling, paving & compaction

For more information on companies in this article

Related Content

  • Safety upgrade for Canadian highway
    February 20, 2012
    New machines from Dynapac have played an important role in tackling a stretch of Canadian highway with safety issues. The machines have been used to meet experimental compaction standards specified by highway engineers, so as to withstand Canada's harsh winter conditions. Canadian contractors InterCite Construction and Pavex of St Felicien have used the new Dynapac machines for work on upgrading Route 175, one of Canada's most dangerous highways, located in the Province of Quebec. Route 175 is a 174km long
    Read More
  • Seal of approval
    August 2, 2012
    Timely maintenance using proven cost-effective methods can extend the life of a highway by many years as Patrick smith reports Highways are expensive assets to construct, and the wear and tear of modern traffic means that regular maintenance will delay costly repairs or in extreme cases reconstruction. There are a number of methods of carrying out such maintenance, and these include the use of slurry seals and micro-surfacing, which are cold mixed asphalt which is a mixture of graded aggregate, asphalt emul
    Read More
  • Qatar’s new highway requires huge logistics operation
    October 26, 2016
    In the Middle East nation Qatar, a large-scale highway project is underway that will make significant improvements for vehicle capacity and cut journey times for drivers. The new route will also improve transport connections between Qatar’s ports and neighbouring Saudi Arabia. At the same time, the new highway will carry much of the heavy vehicle traffic travelling between the two countries.
    Read More
  • Pavers providing smooth runway for Saudi Arabia
    October 2, 2014
    Jeddah’s international airport in Saudi Arabia is benefiting from a major revamp to help boost capacity. The King Abdulaziz International Airport (KAIA) near Jeddah has seen a massive increase in passenger numbers in the last 20 years Demand has continued to grow due to both business travel and religious tourism and the KAIA authorities opted to expand the facilities in 2006, in line with anticipated needs. That first phase of the planned expansion is being completed during this year, making KAIA the la
    Read More

Highlighted Content