REFLECTION CRACKING OF BITUMINOUS OVERLAYS ON RIGID PAVEMENTS

OVERLAYING CONCRETE PAVEMENTS PROLONGS THEIR SERVICE LIFE, BUT THE REFLECTION CRACKING THAT ENSUES CREATES A NEW MAINTENANCE PROBLEM. NEW YORK STATE HAS TRIED SEVERAL METHODS OF RETARDING THIS CRACKING, WITH THE FOLLOWING RESULTS: 1) BREAKING THE CONCRETE PAVEMENT INTO SMALL PIECES HAS PREVENTED REFLECTION CRACKING BUT THE OVERLAY TESTED WAS FAR THICKER THAN THE NORMAL SECTION, AND 2) STONE-DUST BOND-BREAKERS DID NOT RETARD REFLECTION CRACKING. IN ADDITION, THE EXTENT OF THE STATEWIDE PROBLEM WAS SURVEYED, AND THREE OVERLAYS NEAR ALBANY ARE BEING OBSERVED CLOSELY FROM CONSTRUCTION THROUGH SUBSEQUENT SERVICE. FROM THIS WORK, IT APPEARS THAT THE MAJOR CAUSE OF REFLECTION CRACKING IN THIS STATE IS THE EXPANSION AND CONTRACTION OF THE UNDERLYING CONCRETE SLABS, AND ANY SUCCESSFUL OVERLAY SYSTEM MUST TAKE THIS INTO ACCOUNT. /FHWA/

Media Info

  • Pagination: 62 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00206501
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: SR 16,, Special Report
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Oct 24 2003 12:00AM