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

  • Securing safer transportation infrastructure through non-destructive technology
    June 16, 2014
    Kevin Vine reports on the use of non-destructive testing for structural analysis of bridges Seven years ago, the overpass collapse in Laval, Québec that led to the death of five people brought to light severe issues with the state of the country’s bridges and transportation infrastructure. More recently, a crack in the Champlain Bridge to Montreal that forced over 160,000 commuters to find alternate routes to work reaffirmed a need for greater emphasis on early detection before a crisis occurs.
    Read More
  • Asphalt compaction answer
    February 8, 2012
    A new generation of asphalt compaction technology is coming to market, reports Mike Woof. The market for rubber tyred compactors has grown in recent years, prompting manufacturers to develop a new generation of machines.
    Read More
  • The Danish Road Directorate is testing climate-friendly asphalt
    June 4, 2018
    Over the next few weeks, Denmark is hosting a world-premiere in the field of green infrastructure. A busy section of the motorway exiting the greater area of Copenhagen northbound towards Elsinore has been chosen is being used for the trials. This is the first of several roads on the Danish state road network to receive a special climate-friendly asphalt, as part of the development of pavements that reduce emissions from road traffic. This type of asphalt has been developed over the last decade and is the
    Read More
  • Mega city transport in Mexico
    June 13, 2012
    Rapid urban growth is resulting in massive mega cities with major transport needs and Mexico City is one of the world’s largest – Mike Woof reports Mexico City is a vast, sprawling metropolis and one of the world’s largest cities, resulting in huge problems for its inhabitants, particularly with regard to infrastructure. Measuring population size is an inexact science for large cities as suburban areas can add to the figures considerably, especially in developing nations where unplanned expansion is as comm
    Read More

Highlighted Content