TAR CONCRETE PAVEMENT CONSTRUCTION AND PERFORMANCE

THE REPORT ENCLOSED FINALIZES THE HISTORY OF AN EXPERIMENTAL, TAR CONCRETE PAVEMENT. THE PAVEMENT CARRIED VERY HEAVY TRUCK LOADS; SEVERE WHEEL-TRACK RUTTING DEVELOPED; AND THE ENTIRE SELECTION WAS OVERLAID WITH ASPHALTIC CONCRETE. THE TAR CONCRETE WAS LAID IN LATE 1969; THE OVERLAY WAS PLACED IN EARLY 1972. THE ITEMS OF SPECIAL INTEREST IN THIS REPORT ARE THE COMPARATIVE RUT-DEPTH MEASUREMENTS. THE ASPHALTIC CONCRETE SECTIONS HAVE ALSO RUTTED SIGNIFICANTLY. RUTTING IS BEING OBSERVED ON THE HIGHEST-TYPE FLEXIBLE PAVEMENTS; SIGNIFICANT WEAR HAS BEEN OBSERVED ON PCC PAVEMENTS (I 75 IN THE COVINGTON AREA AND I 64 IN THE LOUISVILLE AREA). RUTTING EFFECTS STEERING CONTROL AND CAUSES HYDROPLANING. A NEW STUDY (KYHPR-72-72) OF THE RUTTING PHENOMENON IN FLEXIBLE PAVEMENTS HAS BEEN UNDERTAKEN; IN RECENT STUDIES ON FLEXIBLE PAVEMENT DESIGN CRITERIA, RUTTING WAS NOT FOUND TO BE "PREVENTABLE"-- BUT WAS PROPORTIONALIZED SO THAT IT WOULD DIMINISH WITH INCREASING DESIGN TRAFFIC.

Media Info

  • Features: Figures; Tables;
  • Pagination: 7 p.
  • Serial:
    • Issue Number: 346

Subject/Index Terms

Filing Info

  • Accession Number: 00207527
  • Record Type: Publication
  • Report/Paper Numbers: Res Rept
  • Files: TRIS, STATEDOT
  • Created Date: Sep 17 1973 12:00AM