Asphalt Pavement Alliance announces 2015 Perpetual Pavement award winners

Eight states honored for long-lasting roadsPPA_2015_winners

The Asphalt Pavement Alliance (APA) has recognized eight state departments of transportation with a 2015 Perpetual Pavement Award for high quality, long-life asphalt pavements.

The award is presented to state transportation departments and local agency road owners for well-performing asphalt pavements that are at least 35 years old with proven high-quality structural design.

To earn the award, the pavement must have not suffered a structural failure, and it should have an average interval between resurfacing of no less than 13 years. The road must demonstrate the characteristics expected from a long-life, perpetual pavement design: excellence in design, quality in construction and value to taxpayers. (more…)

Asphalt’s place in the growing green roof market

greenroof_Portland_webBy James Careless

Once upon a time, plants growing on a roof were seen as a sign of decay. But today, vegetation living on top of buildings is a sign of the ongoing “green roof revolution.”

In this scenario, rooftops are being covered with waterproof membranes and reinforced to support the soil and drainage necessary to raise plants on an ongoing basis. The choice of vegetation can be as simple as prairie grass or as complex as a mix of flowers, grasses and even small lightweight shrubs.