THE FEASIBILITY OF RECYCLING THIN SURFACING SYSTEMS

There is currently great enthusiasm for recycling asphalt, particularly the high polished stone value aggregate in surface course materials when those surfacings are no longer serviceable. The need for recycling is exacerbated by hot-mix thin surfacing systems because they have a relative high proportion of such aggregate compared to some other surfacing options. An initial literature search, not reported here, was undertaken to identify what was already known prior to laboratory trials being undertaken to identify the changes in the properties and composition of the component materials, aggregate and binder. A pilot-scale trial was undertaken at a quarry entrance followed by two road trials on the A1(M) at Hatfield and the A405 near Watford. These trials demonstrate that recycling can be successfully carried out at proportions of at least up to 30%, although care is needed to ensure that the composition routinely meets that specified for the proprietary product. (A)

• Corporate Authors:

  TRL

  Crowthorne House, Nine Mile Ride
  Wokingham, Berkshire  United Kingdom  RG40 3GA
• Authors:
  • Nicholls, J C
• Publication Date: 2005

Language

• English

Media Info

• Features: References;
• Pagination: 9 p.

Subject/Index Terms

• TRT Terms: Aggregates; Binders; Bituminous mixtures; Recycling; Surfacing; Sustainable development; Thickness
• ITRD Terms: 4577: Aggregate; 4948: Binder; 4967: Bituminous mixture; 4573: Recycling (mater); 2972: Surfacing; 2427: Sustainability; 5933: Thickness
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 00988590
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Apr 4 2005 12:00AM