Climate change challenge

WRAP (Waste and Resources Action Programme) is working to create sustainable markets for recycled resources and improve waste minimisation and recycling rates in the UK. In the aggregates sector, WRAP commissioned research by TRL, Taylor Woodrow Technology and Costain to identify a modelling tool that could be used to identify the carbon dioxide emissions generated by typical road construction scenarios. The tool covers four applications: unbound, hydraulically bound mixtures, concrete and bituminous bound. Four tools were identified as potentially suitable: ESRSA Tool from WRAP, the Environmental Wizard tool for cold recycling bitumen-bound material from Roadstone Recycling Ltd, the Life Cycle Inventory Model for Asphalt Pavements from the European Asphalt Pavement Association and EuroBitume, and Corporate Stepwise from Best Foot Forward. In trials using a typical road-building scenario, none of the tools was able to deliver the data required. WRAP decided to develop its own bespoke tool design. The characteristics of the tool are listed and tests of the tool by the Quarry Products Association are outlined. The user guide to the tool is discussed. The tool confirmed that the use of recycled and secondary aggregates could reduce carbon dioxide emissions compared with primary aggregates. Case studies are presented for ex situ recycling of the A38 in Devon and the A2/A282 Dartford Improvement. (A)


  • English

Media Info

  • Pagination: 15-17
  • Serial:
    • Volume: 233
    • Issue Number: 7
    • Publisher: QMJ PUBLISHING LTD
    • ISSN: 0305-9421

Subject/Index Terms

Filing Info

  • Accession Number: 01043731
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Mar 9 2007 8:13AM