FACTORS INFLUENCING FLEXIBLE PAVEMENT PERFORMANCE

FLEXIBLE PAVEMENT PERFORMANCE, AS EXPRESSED BY THE PRESENT SERVICEABILITY INDEX /PSI/ IS RELATED TO LOCAL FACTORS, SUCH AS SURFACE COURSE THICKNESS, BASE COURSE THICKNESS, SUBBASE COURSE THICKNESS, AXLE LOAD AND NUMBER OF LOAD APPLICATIONS. ON THE PREMISE THAT FUNCTIONAL PAVEMENT DESIGN SHOULD RECOGNIZE THE RELATIONSHIP BETWEEN THESE FACTORS AND PERFORMANCE, DATA FROM 134 AASHO ROAD TEST FLEXIBLE PAVEMENT SECTIONS WERE EXAMINED FOR BEHAVIORAL TRENDS. THIS RESULTED IN A MATHEMATICAL EXPRESSION ON WHICH IT IS THEORIZED THAT PERFORMANCE, EXPRESSED IN TERMS OF PSI, CAN BE INCORPORATED INTO DESIGN PROCEDURES. THIS EXPRESSION RECOGNIZES THE FACTORS OF LONG-TERM AND CYCLIC DETERIORATION RATES, AND CORRELATES WERE MADE BETWEEN PSI AND SUCH AASHO ROAD TEST DATA AS SLOPE VARIANCE, RUT DEPTH, AND ROUGHNESS, AND BETWEEN THE FACTORS OF INTEREST AND BENKELMAN BEAM DEFLECTION. THE STUDY INCLUDES THE USE OF NONDIMENSIONAL TECHNIQUES IN CORRELATING THE FACTORS OF INTEREST WITH LOAD-DEFLECTION BEHAVIOR OF FLEXIBLE PAVEMENTS DURING PLATE- BEARING TESTS.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/nchrp/nchrp_rpt_22.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00775614
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved. No. 22, 69 PP.
• Authors:
  • Kondner, R L
  • Krizek, R J
• Publication Date: 1966

Media Info

• Media Type: Digital/other
• Serial:
  • NCHRP Report
  • Issue Number: 22
  • Publisher: Transportation Research Board
  • ISSN: 0077-5614

Subject/Index Terms

• TRT Terms: Axle load force; Base course (Pavements); Benkelman beam; Deflection; Flexible pavements; Mathematical analysis; Performance; Plate bearing test; Roughness; Ruts (Pavements); Slopes; Subbase (Pavements); Surface course (Pavements); Thickness
• Non-Preferred Terms: Serviceability
• Identifier Terms: AASHO Road Test
• Uncontrolled Terms: Rut; Serviceability Index; Subbase
• Subject Areas: Design; Highways; Pavements;

Filing Info

• Accession Number: 00205332
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Dec 12 1994 12:00AM