HOT-IN-PLACE RECYCLING STATE-OF-THE-PRACTICE

Since the last symposium on recycling in 1979, many changes have occurred that have improved the overall concept of recycling asphalt pavements. Not only has recycling become widely accepted and practiced, the technology, equipment and procedures have advanced as well. The use of hot central plant recycling has improved our understanding of mixtures and associated equipment so that adding 10-30% recycled asphalt pavement is now normal practice. Cold in-place recycling has advanced in both mixture and equipment design so that over-the-road reconstruction is now a routine method in many areas. But the prospect of true hot in-place recycling (HIR) offers an opportunity that not only provides a high quality new surface, but disruption to the public can be minimized. Over the past twenty years or so, several approaches to HIR have been attempted with varying degrees of success. These have ranged from simple direct-flame heating, heater-scarifying, combined cold milling/hot mixing, and more recently both infrared heating and infrared heating combined with hot air. Key goals in improving this technology have included recycling to greater depths, ability to add new materials, reducing damage to the existing pavement, and reducing air pollution to acceptable levels. This paper discusses these elements and the progress being made in the overall technology.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02702932
• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Terrel, R L
  • Epps, J A
  • SORENSON, J B
• Conference:
  • Asphalt Paving Technology 1997
  • Location: Salt Lake City, Utah
  • Date: 1997-3-17 to 1997-3-19
• Publication Date: 1997

Language

• English

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 723-745
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 66
  • Publisher: Association of Asphalt Paving Technologists (AAPT)
  • ISSN: 0270-2932
  • Serial URL: https://www.asphalttechnology.org/site_page.cfm?pk_association_webpage_menu=9169&pk_association_webpage=19109

Subject/Index Terms

• TRT Terms: Air quality management; Asphalt pavements; Cold in-place recycling; Cold weather; Hot in-place recycling; In-place recycling; Infrared heating; Pavements; Recycling; State of the art studies
• Old TRIS Terms: Air pollution abatement; Recycled pavements
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements; I31: Bituminous Binders and Materials; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00752135
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Aug 10 1998 12:00AM