Technical Report Documentation Page 1. Report No. FHWA/TX-05/0-4398-1 2. Government Accession No. 3. Recipient’s Catalog No. 5. Report Date March 2003, Revised March 2004 4. Title and Subtitle APPLICABILITY OF ASPHALT CONCRETE OVERLAYS ON CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS 6. Performing Organization Code 7. Author(s) Manuel Trevino, Terry Dossey, B. Frank McCullough, Yetkin Yildirim 8. Performing Organization Report No. 0-4398-1 10. Work Unit No. (TRAIS) 9. Performing Organization Name and Address Center for Transportation Research The University of Texas at Austin 3208 Red River, Suite 200 Austin, TX 78705-2650 11. Contract or Grant No. 0-4398 13. Type of Report and Period Covered Research Report 9/1/2002-3/30/2004 12. Sponsoring Agency Name and Address Texas Department of Transportation Research and Technology Implementation Office P.O. Box 5080 Austin, TX 78763-5080; www.ntis.gov 14. Sponsoring Agency Code 15. Supplementary Notes Project conducted in cooperation with the U.S. Department of Transportation, the Federal Highway Administration, and the Texas Department of Transportation. 16. Abstract This report presents the research and recommendations on the use of asphalt concrete (AC) overlays to rehabilitate continuously reinforced concrete pavements (CRCP). 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. 17. Key Words rehabilitation, asphalt concrete (AC), portland cement concrete pavement (PCCP), bonded concrete overlay (BCO), continuously reinforced concrete pavement (CRCP) 18. Distribution Statement No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161. 19. Security Classif. (of report) Unclassified 20. Security Classif. (of this page) Unclassified 21. No. of pages 86 22. Price Form DOT F 1700.7 (8-72) Reproduction of completed page authorized
APPLICABILITY OF ASPHALT CONCRETE OVERLAYS ON CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS
Apr 22, 2023
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