EVALUATION OF METHODS TO CONTROL DEBONDING. FINAL REPORT

The purpose of the research was to evaluate various test methods for obtaining a measure of resistance to debonding of asphaltic concrete. The work was done in two phases. Phase 1 was involved principally with laboratory prepared specimens and Phase 2 with the changes in susceptibility to debonding of pavement cores as the pavement increased in service time. In Phase 1, the test methods were the immersion-compression, the University's double-punch, and a modified Lottman split-cylinder. The treatment included portland cement, lime, silane, BA-2000, and increasing the sand equivalent value. The results indicated that overall the portland cement treatment generally increased the "wet" strength and the "retained" strength and so was rated as the best. The double-punch procedure always yielded the highest wet and retained strength and also had the lowest standard deviation values; and it was rated as the best of the three test methods. In Phase 2, the plant mixtures and cores from surfaces containing no treatment, BA-2000, and portland cement were evaluated with the immersion-compression test, the double-punch method, and the Tunnicliff split-cyclinder procedure. The double-punch method rated the untreated plant mixture as being acceptable, but the split-cylinder procedure rated it as not acceptable. Tests of cores by the immersion-compression test and double-punch method indicated good resistance to debonding; the split-cylinder procedure did not up to the first year. The pavement sections have shown no failures after 19.8 months of service.

• Corporate Authors:

  University of Arizona, Tucson

  Transportation and Traffic Institute
  Tucson, AZ  United States  85721

  Arizona Department of Transportation

  206 South 17th Avenue
  Phoenix, AZ  United States  85007

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Jimenez, R A
• Publication Date: 1988-12

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 68 p.

Subject/Index Terms

• TRT Terms: Asphalt concrete; Compression tests; Cracking; Debonding; Durability; Evaluation; Stripping (Pavements); Test procedures
• Uncontrolled Terms: Treatment
• Old TRIS Terms: Double punch tests; Immersion compression test; Split cylinder tests
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00497355
• Record Type: Publication
• Report/Paper Numbers: FHWA-AZ-88-188, ATTI 88-3
• Contract Numbers: PL-1(31) Item 188
• Files: TRIS, USDOT, STATEDOT
• Created Date: Sep 30 1990 12:00AM