DEVELOPMENT OF A LONG-TERM MONITORING SYSTEM FOR TEXAS CRC PAVEMENT NETWORK UTILIZING EXPERIMENTAL DESIGN. PROCEEDINGS, 4TH INTERNATIONAL CONFERENCE ON CONCRETE PAVEMENT DESIGN AND REHABILITATION, PURDUE UNIVERSITY, APRIL 18-20, 1989

The primary objective of this research was to develop an experimental design for the network level condition survey in order to develop a long-term monitoring system for Texas continuously reinforced concrete (CRC) pavement. This paper provides an example for developing the experimental design and an analysis methodology, and for presenting the results of a preliminary analysis. In addition to the experimental design, other major contributions include developing the distess index and decision criteria index for determining the current pavement distress condition and the time when a pavement has reached its terminal condition. The distress index was developed using discriminant analysis of the condition survey data for 1974 to 1984. It is a weighted combination of several major distress manifestations occurring in a pavement section. For major rehabilitation, a pavement is classified as a candidate for overlay if its distress index is smaller than zero. Once the current pavement distress condition can be expressed as a single number, i.e., as a Zeta score, its future condition can be predicted from the relationship between the Zeta score and some independent variables considered to have an influence on pavement deterioration. However, this relationship cannot be obtained unless sufficient distress information is available from a well-planned condition survey conducted periodically for years. The approach adopted in this study for determining the relationship was to monitor existing in-service roads. A factorial experiment permitting maximum use of data collected on a limited number of study test sections was designed. Several independent variables were selected as the experimental factors, based on the study of the AASHTO equations, field data analysis, and mechanistic models. The experimental factors possess control levels which cover a wide range of conditions existing in Texas. The distress condition for each of 425 test sections was calculated using the distress index equation. It was found that most design experimental factors or their interactions have significant influence on the Zeta score and pavement mean crack spacing.

• Corporate Authors:

  Purdue University

  School of Civil Engineering, 550 Stadium Mall Drive
  West Lafeyette, IN  United States  47907

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Chou, C J
  • McCullough, B F
• Publication Date: 1989-4

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 531-545
• Serial:
  • Publication of: Purdue University
  • Publisher: Purdue University

Subject/Index Terms

• TRT Terms: Condition surveys; Continuously reinforced concrete pavements; Data collection; Defects; Discriminant analysis; Monitoring; Pavement distress; Pavements; Test sections; Time duration
• Uncontrolled Terms: Experimental design; Long term
• Geographic Terms: Texas
• Old TRIS Terms: Discriminate analysis; Distress index; Zeta score
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00486363
• Record Type: Publication
• Report/Paper Numbers: FHWA-RD-89-208, 3C1B1144
• Contract Numbers: DTFH61-87-C-00140
• Files: TRIS, USDOT
• Created Date: Aug 31 1989 12:00AM