DEVELOPMENT OF PERFORMANCE EQUATIONS AND SURVIVIOR CURVES FOR FLEXIBLE PAVEMENTS

This report summarizes the fundamental aspects in the development and application of a methodology for predicticting pavement performance in terms of three indices: (1) present serviceability index, (b) distress area index, and (c) distress severity index. A statistical procedure used for estimating the parameters of the performance relationships guaranteed that the goodness of fit between predicted and observed data is maximized. The most salient feature of the proposed methodology is the use of an S-shaped curve that recognizes a change in the rate of deterioration of a pavement as the traffic level accumulates until rehabilitation is needed. Serviceability ratings, based on data obtained from 164 pavement test sections, are used to predict the performance of black base, hot mix and overlay pavements. Pavement performance can also be ascertained in terms of area and severity distress ratings for the following types of pavement distress: rutting, alligator cracking, longitudinal cracking, and transverse cracking. In addition to the development of pavement performance relationships, a methodology is provided to generate survivor curves for different critical performance levels. (Author)

  • Supplemental Notes:
    • Research performed in cooperation with The Federal Highway Administration, Research Study Title: Flexible Pavement Data Base and Design.
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  United States  76011

    Texas State Department of Highways & Public Transportation

    Transportation Planning Division, P.O. Box 5051
    Austin, TX  United States  78763

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Garcia-Diaz, A
    • Riggins, M
    • Liu, S J
  • Publication Date: 1984-3

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 174ps

Subject/Index Terms

Filing Info

  • Accession Number: 00395907
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-TX-85-10+284-5 Imtrm Rpt
  • Contract Numbers: Study 2-8-80-284
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Oct 31 1985 12:00AM