THICK-LIFT FLEXIBLE PAVING

PAVING ASPHALT IN A LIFT THICKER THAN CURRENT SPECIFICATIONS ALLOW WAS INVESTIGATED ON A CONTRACT WHERE A BASE-COURSE LAYER 6-IN. THICK WHEN COMPACTED WAS PUT DOWN IN ONE LIFT. A 400-FT. CONTROL SECTION WHERE THE MATERIAL WAS PLACED IN TWO 3-IN. LIFTS WAS INCLUDED FOR CONTROL PURPOSES. THE RESULTS SHOWED THAT BOTH TEMPERATURE PATTERNS AND IN-PLACE DENSITIES DOWN THROUGH THE MATERIAL WERE SIMILAR FOR BOTH PROCEDURES. IT IS THEREFORE RECOMMENDED THAT THIS METHOD BE ALLOWED ON FUTURE PAVING CONTRACTS IN NEW YORK WITH THE FOLLOWING PROVISIONS: 1) A FASTER FEED-BELT SPEED IS NEEDED IN THE PAVER, 2) LARGE, "AIR-ON-THE-RUN" PNEUMATIC ROLLERS SHOULD BE USED FOR BREAKDOWN 3) PROPER SCREED EXTENSIONS ARE REQUIRED TO CONTROL SPREADING, AND 4) AN EFFICIENT MATERIALS-HAULING SCHEDULE MUST BE ESTABLISHED BEFORE PAVING BEGINS. /FHWA/

Media Info

  • Pagination: 22 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00214532
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: RR 9
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Apr 30 2003 12:00AM