MONITORING OF COLD ROAD RECYCLING PROCESS. A DEMONSTRATION WITH KENT COUNTY COUNCIL

This report evaluates a new process which was used to repair Lunedale Road, a lightly trafficked residential road in Dartford, Kent. The reconstruction technique consists of cold road recycling with a foamed bitumen bound roadbase. The foamed bitumen process costs 20-25% less and the repair contract was completed 30% more quickly than would have been the case using conventional materials and techniques. Specialist road test confirmed that the general quality of the road structure and surface compared satisfactorily with that of the control sections reconstructed in conventional bituminous materials. Tests also showed that the reconstructed road should not require structural maintenance within the next 20 years. The recycling process eliminates the need to quarry new stone, dry and coat it with bitumen at 170(sup o)C to produce asphalt and transport material to and from site. However transport costs are very dependent on the distances involved and so the expression of the Energy Cost Savings = Pound 2.06/tonne + Pound 0.007/tonne.km. For a typical project involving 100 km return journeys this gives cost savings of Pound 3.46/tonne, which, for Lunedale Road, corresponds to Pound 1.31 /m (sup 2).

• Supplemental Notes:
  • U.S. Sales Only.
• Corporate Authors:

  Department of the Environment, England

  2 Marsham Street
  London SW1P 3EB,   England 
• Publication Date: 1989-7

Media Info

• Pagination: 43 p.

Subject/Index Terms

• TRT Terms: Alternatives analysis; Bitumen; Bituminous binders; Bituminous materials; Bituminous mixtures; Cost effectiveness; Costs; Energy consumption; Foamed asphalt; Materials tests; Pavements; Quarrying; Reconstruction; Recycled materials; Recycling; Residential streets; Road tests; Surface course (Pavements)
• Old TRIS Terms: Bitumen tests; Recycled pavements; Residential roads; Structure maintenance
• Subject Areas: Energy; Finance; Highways; Materials; Pavements; Vehicles and Equipment; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00615866
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: ED-230/343, GB-297
• Files: TRIS
• Created Date: Sep 30 1991 12:00AM