FATIGUE AND DEFLECTION OF ASPHALTIC CONCRETE PAVEMENT

THE STUDY DESCRIBED CONSISTED OF THREE PHASES HAVING RESPECTIVELY, THE FOLLOWING OBJECTIVES' 1/ TO CORRELATE THE MAGNITUDE AND NUMBER OF REPETITIONS OF DEFLECTION WITH PAVEMENT PERFORMANCE SO THAT A PERMISSIBLE DEFLECTION VALUE COULD BE ESTABLISHED, 2/ TO DETERMINE THE NUMBER OF REPETITIONS OF A GIVEN LOAD TO CAUSE FAILURE FROM TESTS ON BEAM SPECIMENS REMOVED FROM THE PAVEMENTS TESTED IN PHASE 1, AND 3/ TO ESTABLISH THE ASPHALT CONCRETE MIX DESIGN THAT WILL BEST WITHSTAND REPEATED DEFLECTIONS OF THE MAGNITUDE FOUND IN PHASE 1. THE GENERAL CONCLUSIONS OF THE STUDY ARE' 1/ THE BENKELMAN BEAM EFFECTIVELY EVALUATES THE SERVICEABILITY OF ASPHALTIC CONCRETE PAVEMENTS, 2/ THE DEFLECTION OF PAVEMENTS INCREASES WITH INCREASE IN TRAFFIC UNTIL FAILURE OCCURS, 3/ PAVEMENT DEFLECTIONS OF 0.020 INCH OR LESS UNDER MAXIMUM WHEEL LOAD /9 KIP/ INDICATE A SATISFACTORY CONDITION, 4/ DEFLECTIONS OF MORE THAN 0.020 INCH UNDER MAXIMUM LOAD MAY BE DECREASED TO A SAFE AMOUNT BY OVERLAYING WITH ASPHALT CONCRETE. THE CONCLUSIONS OF THE RESEARCH ARE BEING UTILIZED IN CURRENT PROCEDURES FOR DESIGNING BOTH NEW PAVEMENT AND OVERLAYS FOR FLEXIBLE PAVEMENT.

  • Supplemental Notes:
    • Hps-1/24, STATE NO. 21-01, JUL64
  • Corporate Authors:

    Oregon State Highway Commission

    ,    
  • Authors:
    • White, O A
  • Publication Date: 1964-7

Subject/Index Terms

Filing Info

  • Accession Number: 00206250
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Sep 1 1994 12:00AM