FLEXIBLE PAVEMENT EVALUATIONS IN OKLAHOMA

THE OKLAHOMA FLEXIBLE PAVING RESEARCH PROJECT WAS CONDUCTED TO EVALUATE PAVEMENT PERFORMANCE AND TO ASCERTAIN DESIGN CRITERIA FOR PAVEMENTS. A METHOD FOR VISUALLY RATING THE PRESENT CONDITION OF FLEXIBLE PAVEMENTS WAS ESTABLISHED IN 1955 AND IS STILL USED. THE FACTORS CONSIDERED ARE RIDING QUALITY, CRACKING, RAVELLING, DISTORTION, FAILED AREAS, AND THE MAINTENANCE PERFORMED. THE FINAL RATING IS A NUMERICAL RATING AND A DESCRIPTIVE RATING OF FAILURE, POOR, AVERAGE, GOOD, SUPERIOR OR EXCELLENT. IN ADDITION TO THE CONDITION AND MAINTENANCE CONSIDERATIONS, THE STUDY OF BENKELMAN BEAM DEFLECTION LEVELS AS RELATED TO THE PERFORMANCE CURVE INDICATED THAT A GIVEN LEVEL OF DEFLECTION FOR A SECTION OF PAVEMENT IS USUALLY RATHER CONSTANT UNTIL OVERSTRESSING OR FAILURE OF THE PAVEMENT OCCURS. THIS PAVEMENT PERFORMANCE EVALUATIONS SYSTEM HAS ALSO ALLOWED ESTABLISHMENT OF DESIGN CRITERIA, NOT ONLY FOR OVERLAYS OF EXISTING PAVEMENTS, BUT FOR STRUCTURAL DESIGN OF NEW PAVEMENT.

• Supplemental Notes:
  • Vol 38, pp 344-352, 2 REF
• Authors:
  • Hartronft, B C
• Conference:
  • Association of Asphalt Paving Technologists Proc
• Publication Date: 1969-2

Subject/Index Terms

• TRT Terms: Benkelman beam; Deflection tests; Design; Evaluation; Flexible pavements; Pavement design; Pavement performance; Pavements; Ratings; Riding qualities
• Uncontrolled Terms: Design criteria
• Subject Areas: Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00207102
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 27 1970 12:00AM