DEVELOPMENT OF PERFORMANCE EQUATIONS AND SURVIVOR CURVES FOR FLEXIBLE PAVEMENTS

This report summarizes the fundamental aspects in the development and application of a methodology for predicting pavement performance in terms of three indices: (a) present serviceability index, (b) distress area index, and (c) distress severity index. A statistical procedure used for estimating the parameters of the performance relationships guarantees that the goodness of fit between predicted and observed data maximized. The most salient feature of the proposed methodology is the use off an S-shaped curve thaa recognizes a change in the rate of deterioration of a pavement as the traffic level accumulates until rehabilitation is needed. Seviceability 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, logitudinal 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: 174 p.

Subject/Index Terms

• TRT Terms: Alligator cracking; Defects; Equations; Flexible pavements; Forecasting; Longitudinal cracking; Pavement distress; Pavement performance; Pavements; Ruts (Pavements); Transverse cracking
• Uncontrolled Terms: Rut
• Old TRIS Terms: Alligatoring; Pavement serviceability ratings
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00451686
• Record Type: Publication
• Report/Paper Numbers: FHWA-TX-85-10+284-5
• Contract Numbers: Study 2-8-80-284
• Files: TRIS, USDOT, STATEDOT
• Created Date: Aug 27 2004 9:12PM