Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

'Green' asphalt promises to cut exhaust pollution


ROADSIDE AIR pollution will be dramatically reduced by a new asphalt to be trialled in Trondheim, Norway, it was claimed this week.

A 300m stretch of highway is to be laid in August with Active Asphalt, developed by surfacing supplier Shell and Norwegian firm Applied Plasma Physics. According to Shell, particulate matter in the air including rubber dust and soot in vehicle exhaust will be cut by up to 10%.

Active Asphalt works by allowing suspended particulate matter to settle on the road surface.

It is described by Shell as a 'conductive' wearing course and works by preventing the build up of static charges in the road surface. Friction between rubber tyres and asphalt typically produces a positive electrostatic charge. Particles also carry a positive charge and, as a result, are repelled, remaining suspended in the air.

Dust is removed from the Active Asphalt surface by rain or mechanical road cleaning.

The trial will be monitored for at least a year by Trondheim University and the Norwegian Road Authority before commercial production begins.

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.