A 10-YEAR REPORT ON PERFORMANCE OF BONDED CONCRETE RESURFACINGS

THE PERFORMANCE OF SEVERAL BONDED CONCRETE OVERLAY PROJECTS WAS SURVEYED AND REPORTED. RESULTS ARE TABULATED OF TESTS OF CORE SAMPLES AND BOND INTERFACE. SOME AREAS OF DISTRESS AND OF BOND LOSS ARE PICTURED. CAUSES OF BOND LOSS AND ITS EFFECT ON THE PERFORMANCE OF THE OVERLAY ARE DISCUSSED. GOOD BOND MUST BE THE PRIMARY GOAL, BUT A LOSS OF BOND DOES NOT APPEAR TO IMPEDE THE PERFORMANCE OF A BONDED CONCRETE OVERLAY IN LONG-TERM CONTINUOUS USE. SOME OF THE FINDINGS FOLLOW' /1/ IT IS ESSENTIAL TO FOLLOW THE RECOMMENDED TECHNIQUES AND CONSTRUCTION SEQUENCE TO ASSURE A SUCCESSFUL PROJECT, /2/ THIN WATERY GROUT OR FREE WATER LEFT STANDING ON THE SURFACE OF THE BASE PAVEMENT TENDS TO WEAKEN THE BOND, /3/ AN ADEQUATE BOND STRENGTH CAN BE OBTAINED, USING THE TECHNIQUES OUTLINED BY WESTALL /SEE REFERENCES BELOW/. WHEN SUCH BOND IS OBTAINED, SHEAR TESTS CAUSE A BREAK IN THE BASE PAVEMENT IN PRACTICALLY EVERY CORE TESTED, /4/ SOME LOSS OF BOND WAS FOUND ON PRACTICALLY EVERY PROJECT WITH MOST AREAS BEING SMALL IN SIZE ALONG LONGITUDINAL CONSTRUCTION JOINTS, /5/ LOSS OF BOND AREAS CAN ONLY BE FOUND BY SOUNDING THE PAVEMENT AND SHOW LITTLE OR NO DETERIORATION, /6/ NO DISTRESS WAS OBSERVED ALONG LONGITUDINAL CONSTRUCTION JOINTS WHICH COULD BE ATTRIBUTED TO LACK OF LOAD TRANSFER, /7/ JOINTS IN THE BASE PAVEMENT WILL REFLECT THROUGH THE RESURFACING AND SHOULD BE MATCHED WHENEVER POSSIBLE, AND /8/ CRACKS IN THE BASE PAVEMENT WILL ALSO REFLECT THROUGH THE RESURFACING IN MOST CASES. THE EVIDENCE GATHERED SHOWS THAT ADEQUATE PERFORMANCE CAN BE EXPECTED REGARDLESS OF THE THICKNESS OF THE RESURFACING AND THE TYPE AND FREQUENCY OF TRAFFIC. REFERENCES' BONDING THIN CONCRETE TO OLD, W. G. WESTALL, CIVIL ENG., VOL. 28, NO. 6, PP. 406-409, JUNE 1958. BONDED RESURFACING AND REPAIRS OF CONCRETE PAVEMENT, W. G. WESTALL, HIGHWAY RESEARCH BOARD BULL. 260, PP. 14-24, 1960.

Media Info

  • Media Type: Print
  • Features: Appendices; Figures; References; Tables;
  • Pagination: pp 61-76
  • Monograph Title: Maintenance practices
  • Serial:

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Filing Info

  • Accession Number: 00211956
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Apr 1 1994 12:00AM