Applicability of Asphalt Concrete Overlays on Continuously Reinforced Concrete Pavements

This report presents the research and recommendations on the use of asphalt concrete (AC) overlays to rehabilitate continuously reinforced concrete pavements (CRCPs). A thin bonded AC overlay may be an economical means to restore the riding quality of a CRCP. One of the main benefits of such an overlay is the reduction of dynamic impact loading, which in turn, increases the service life of the pavement structure by delaying its rate of deterioration. To make this possible, the rehabilitation must occur in a timely manner. Additional benefits of this rehabilitation strategy are a reduction in noise levels generated at the interface between vehicle tires and pavement, and a reduction in moisture infiltration into the substrata. A thin AC overlay on CRCP, however, is incapable of providing any structural load-carrying enhancement to the pavement in question. Therefore, its applicability is limited to those pavements that are structurally sound. Any major distresses in the existing pavement should be repaired, as any unrepaired failures may reflect through the AC overlay. The most common problems occurring with this type of rehabilitation are debonding of the overlay, reflection of distresses through the overlay and stripping of the asphalt. A decision tree to be used at the project selection stage is provided as a tool to facilitate the decision of whether to utilize this type of rehabilitation.

• Record URL:
  • https://library.ctr.utexas.edu/ctr-publications/0-4398-1.pdf
• 
• Supplemental Notes:
  • Report Date: March 2003; Revised: March 2004.
• Corporate Authors:

  University of Texas, Austin

  Center for Transportation Research, 3208 Red River Street
  Austin, TX  United States  78705

  Texas Department of Transportation

  Research and Technology Implementation Office, P.O. Box 5080
  Austin, TX  United States  78763-5080

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Trevino, Manuel
  • Dossey, Terry
  • McCullough, B Frank
  • Yildirim, Yetkin
• Publication Date: 2004-3

Language

• English

Media Info

• Media Type: Web
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 98p

Subject/Index Terms

• TRT Terms: Benefits; Bituminous overlays; Continuously reinforced concrete pavements; Debonding; Decision trees; Dynamic loads; Moisture barriers; Pavement stripping; Reflection cracking; Rehabilitation; Ride quality; Service life
• Uncontrolled Terms: Noise reduction; Thin bonded overlays
• Subject Areas: Design; Highways; Maintenance and Preservation; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01003482
• Record Type: Publication
• Report/Paper Numbers: FHWA/TX-05/0-4398-1, Research Report 0-4398-1
• Contract Numbers: 0-4398
• Files: TRIS, USDOT, STATEDOT
• Created Date: Aug 31 2005 4:02PM