BITUMINOUS PAVEMENT CONSTRUCTION

THIS REPORT SUMMARIZES THE FINDINGS FROM FIELD RESEARCH STUDIES ON 11 BITUMINOUS PAVEMENT CONSTRUCTION PROJECTS. THESE STUDIES WERE CONCERNED WITH DETERMINING THE EFFECT OF CONSTRUCTION METHODS AND EQUIPMENT OPERATION ON PAVEMENT AND LONGITUDINAL JOINT QUALITY. SEMIHOT AND COLD JOINT DENSITIES WERE FOUND TO BE SLIGHTLY LOWER AND AIR FLOWS HIGHER THAN IN THE ABUTTING LANES. INFRARED HEATING OF THE JOINT APPEARED TO BE THE BETTER OF SEVERAL METHODS TESTED FOR IMPROVING SEMIHOT AND COLD JOINT QUALITY. HOT JOINTS, CONSTRUCTED BY PAVING IN ECHELON, HAD THE HIGHEST QUALITY OF ALL JOINT TYPES STUDIED. PAVER SPEED WAS NOT FOUND TO BE A SIGNIFICANT FACTOR IN FINAL LANE DENSITY. THE PRIMARY ADVANTAGE OF PNEUMATIC-TIRED ROLLERS, BOTH AT THE BREAKDOWN AND INTERMEDIATE STAGE, WAS FOUND TO LIE IN THE ABILITY OF PNEUMATIC TIRES TO SEAL THE PAVEMENT SURFACE AND THUS REDUCE THE AIR FLOW. WITH RESPECT TO DENSITY, NO PARTICULAR ADVANTAGE COULD BE FOUND IN PERFORMING BREAKDOWN ROLLING WITH PNEUMATIC ROLLERS AS COMPARED TO A STEEL THREE-WHEEL OR TANDEM ROLLER. THE VALUE OF HIGH ROLLING TEMPERATURES WAS VERIFIED. THE HIGHEST DENSITIES WERE OBTAINED WHEN BREAKDOWN ROLLING WAS ACCOMPLISHED AT TEMPERATURES ABOVE 200 DEGREE F. WHEN ROLLER OPERATORS WERE ALLOWED TO FOLLOW THEIR NORMAL ROLLING PROCEDURES, IT WAS FOUND THAT THE COMPACTIVE EFFORT AT THE CENTER OF THE LANE WAS FROM THREE TO SIX TIMES GREATER THAN AT THE LANE EDGES. TWO NEWLY-DEVELOPED NONDESTRUCTIVE TEST METHODS - NUCLEAR DENSITY AND AIR FLOW - WERE USED IN ADDITION TO CONVENTIONAL TEST METHODS TO MEASURE PAVEMENT AND JOINT QUALITY. IT WAS FOUND THAT THE ACCURACY OF THESE NONDESTRUCTIVE TESTS WAS AFFECTED TO A SIGNIFICANT DEGREE BY SURFACE TEXTURE OF THE PAVEMENT. IT IS RECOMMENDED THAT THESE TWO TESTS BE USED TO MEASURE COMPACTION ON A RELATIVE, RATHER THAN ABSOLUTE BASIS. /AUTHOR/

  • Corporate Authors:

    Bureau of Public Roads /US

    Structures and Applied Mechanics Division
    ,   United States 
  • Authors:
    • Kilpatrick, M J
    • Mcquate, R G
  • Publication Date: 1967-4

Subject/Index Terms

Filing Info

  • Accession Number: 00214451
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Report/Paper Numbers: Hpr-pr-adm
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM