A diagnostic study of four, in-service, continuously reinforced concrete pavements in Texas was prepared by using computerized performance models in the rigid-pavement design system. The performance models were developed by the American Association of State Highway Officials, and the rigid-pavement design system was developed by the Center for Highways Research of the University of Texas at Austin, the Texas Transportation Institute at Texas A&M University, and the Texas State Department of Highways and Public Transportation. The study shows that use of performance models in the rigid-pavement design system reliably predicts the change in serviceability for continuously reinforced concrete pavements. Data gathered and used for the diagnostic study show that the number of 8165-kg (18-kip) equivalent axle loads had a great influence on the condition of the pavements and the predictions made by the design program. The results indicate that not only does the design program reliably predict service life, but that the designs produced by the program, in light of the performance of the four pavement sections, are reasonable for these in-service sections. Information is also presented that begins to establish the correct level of confidence that should be used in the design of Interstate-type continuously reinforced concrete pavements. The conclusions include the belief that the capabilities of the program as a design further studied so that the ultimate goal of program implementation can be achieved. Future modification of the system should include a simplification of program input by deleting those variables that are insensitive to the design. Thus, the program can be used as a design tool because of its economic capability that allows for ranking various designs based on the costs of construction, traffic delay, maintenance, and overlay strategies. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 1-6
  • Monograph Title: Design and performance of pavement overlays
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00173939
  • Record Type: Publication
  • ISBN: 030902658X
  • Files: TRIS, TRB
  • Created Date: May 18 1978 12:00AM