Cooler Asphalts Can Consume Less Energy

Although most of the asphalt currently used in Western Europe is traditional hot mix, alternatives that consume less energy are being developed. This article describes some of these half-warm asphalts. Half-warm asphalts have the same practical benefits as hot mix, but at temperatures 30 to 40 deg C lower. This lower temperature makes a significant difference: carbon dioxide emissions are reduced and fumes emitted from bitumen are halved for every 10 deg C reduction in temperature. One process for achieving half-warm asphalt is to add special waxes to the mix that lower the viscosity of the bitumen. Another half-warm asphalt is based on foamed bitumen technology. Trials are currently being conducted on an asphalt mix that does not require a temperature above 100 deg C.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/25073860
• Publication Date: 2005-7

Language

• English

Media Info

• Media Type: Print
• Features: Photos;
• Pagination: pp 29-30
• Serial:
  • World Highways/Routes du Monde
  • Volume: 14
  • Issue Number: 6
  • Publisher: Route One Publishing Limited
  • ISSN: 0964-4598
  • Serial URL: http://www.worldhighways.com

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Energy consumption; Foamed asphalt; Product development; Temperature; Waxes
• Uncontrolled Terms: Half-warm asphalts
• Geographic Terms: Western Europe
• Subject Areas: Energy; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01006697
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 3 2005 8:09AM