SOME RECENT FINDING IN FLEXIBLE PAVEMENT RESEARCH

THE AVERAGE LEVEL OF PAVEMENT PERFORMANCE DETERMINED FROM A TWO-YEAR CONTROLLED TRAFFIC TEST /AASHO ROAD TEST/ WAS CORRELATED WITH PERFORMANCE OF TEXAS PAVEMENTS UNDER NORMAL MIXED TRAFFIC, AND THE EFFECT OF WEATHER AND THE REGIONAL EFFECT THROUGHOUT THE STATE. APPROXIMATE VALUES WERE OBTAINED OF COEFFICIENTS OF TEXAS MATERIALS FOR FLEXIBLE PAVEMENTS FOR COMPARISONS WITH AASHO ROAD TEST LAYER COEFFICIENTS. THE ASSUMPTION WAS MADE THAT LOAD-INDUCED DEFLECTIONS OF PAVEMENTS SURFACE ARE AN INDEX TO THE POTENTIAL RATE OF PAVEMENT DETERIORATION. THE RESULTS REPORTED INCLUDED' /1/ DEVELOPMENT OF AN EMPIRICAL EQUATION FOR ESTIMATING DEFLECTIONS FROM THICKNESS AND LABORATORY-DETERMINED STRENGTH OF THE PAVEMENT STRUCTURE MATERIALS, AND /2/ USE OF THE EQUATION TOGETHER WITH DEFLECTIONS OBSERVED ON 323 TEST SECTIONS, TO EVALUATE THE REGIONAL EFFECT. WITH THE SIGNIFICANT REGIONAL EFFECT EVALUATED, THE NET RESULT IS AN EQUATION FOR DEFLECTIONS THAT CONTAINS' /1/ A FIELD COMPRESSION COEFFICIENT FOR EACH LAYER, DEPENDENT ON LABORATORY STRENGTH AND REGIONAL EFFECT, AND /2/ A DEPTH COEFFICIENT FOR EACH LAYER /INCLUDING THE FOUNDATION LAYER/ DEPENDENT UPON THE THICKNESS OF THE LAYER AND ITS POSITION IN THE STRUCTURE.

  • Supplemental Notes:
    • Hpr-1/6/, BPR-14, STATE-2-8-62-32
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  United States  76011
  • Authors:
    • Scrivner, F H
    • Moore, W M
  • Publication Date: 1967-2

Subject/Index Terms

Filing Info

  • Accession Number: 00206298
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Jul 5 1994 12:00AM