A STUDY OF CONSTRUCTION EQUIPMENT AND INITIAL PAVEMENT ROUGHNESS AS MEASURED WITH A PROFILOGRAPH

THE DEVELOPMENT OF A PROFILOGRAPH FOR MEASURING CONSTRUCTION ROUGHNESS IS DESCRIBED. PARTICULAR ATTENTION WAS GIVEN TO THE COST, RUGGEDNESS, SIMPLICITY OF OPERATION AND MAINTENANCE DURING ITS DESIGN IN ORDER THAT SIMILAR INSTRUMENTS COULD BE MADE AVAILABLE FOR USE BY THE VARIOUS DISTRICTS OF TEXAS. THE REASONS FOR ROUGHNESS IN ASPHALTIC CONCRETE PAVING ARE DISCUSSED. THE PRIMARY TEST SITE HAD THE ADVANTAGES OF THE FOLLOWING FEATURES: (1) THE SURFACE OF THE FLEXIBLE BASE HAD BEEN PLANNED WITH AN CMI AUTOGRADE USING ELECTRONICALLY CONTROLLED GRADE APPARATUS AND WAS VERY SMOOTH AND TRUE TO CROSS-SECTION, (2) TWO ASPHALTIC CONCRETE MATS WERE PLACED USING BITUMINOUS PAVERS WITH ELECTRONICALLY CONTROLLED SCREEDS. THE ROUGHNESS WAS DETERMINED WITH THE RAINHART PROFILOGRAPH AND CONSISTED OF OBTAINING A PROFILE OVER THE AREAS IN WHICH THE ROLLERS PARKED, THE PAVER PAUSED, AND VARIOUS PAVER SPEEDS WERE USED. THIS STUDY COULD FIND NO SIGNIFICANT ROUGHNESS IN THE AREA WHERE ROLLERS PAUSED. HOWEVER, SURFACE VARIATION WAS PRESENT NEAR THE AREA IN WHICH THE PAVER PAUSED FOR A CHANGE OF TRUCKS. INCREASED ROUGHNESS WAS EXPERIENCED AS THE PAVER SPEED INCREASED. /BPR/

  • Supplemental Notes:
    • Hpr, State STUDY NO 49
  • Corporate Authors:

    Texas State Department of Highways & Public Transp

    11th and Brazos Streets
    Austin, TX  United States  78701

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Lewis, R L
  • Publication Date: 1967-8

Subject/Index Terms

Filing Info

  • Accession Number: 00206323
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Mar 22 1994 12:00AM