USE OF CONCRETE WEARING SURFACES ON BRIDGE STRUCTURES

THREE TYPES OF BRIDGE PAVEMENTS ARE USED IN NEW YORK STATE: THE WEARING SURFACE CONSTRUCTED INTEGRALLY WITH THE CARRYING SLAB, THE CONCRETE PAVEMENT PLACED SEPARATELY FROM THE CARRYING SLAB, AND THE ASPHALTIC CONCRETE WEARING SURFACE. ASPHALTIC CONCRETE IS EASILY PLACED, BUT IS SOMETIMES SLIPPERY IN COLD WEATHER AND IS PERMEABLE TO WATER. THE INTEGRAL WEARING SURFACE, WHICH IS SIMPLE TO CONSTRUCT BUT REQUIRES CONSIDERABLE CARE BY THE CONTRACTOR AND ENGINEER TO SECURE A SMOOTH RIDING SURFACE, IS USUALLY SATISFACTORY ON MAJOR STRUCTURES, BUT MANY TIMES IS UNSATIFACTORY ON SHORT SPAN STRUCTURES. DUE TO THE FACT THAT THE RIDING SURFACE MUST BE FINISHED WHEN THE SLAB IS PLACED, AND ALSO DUE TO THE FACT THAT THE CAMBER DOES NOT ALWAYS COME OUT OF THE STEEL AS DESIGNED, THE FINISHED GRADE OF THE STRUCTURE DOES NOT ALWAYS CONFORM TO THE PLANNED GRADE. MANY NEW YORK STATE BRIDGES ARE BUILT WITH A SEPARATE CONCRETE WEARING SURFACE. BY PLACING THE PAVEMENT AS A LAST OPERATION, A GREATER PROPORTION OF THE CONCRETE DEAD LOAD CAN BE APPLIED TO THE SUPERSTRUCTURE STEEL BEFORE THE PAVEMENT IS CONSTRUCTED TO TH PLANNED GRADE. /AUTHOR/

  • Supplemental Notes:
    • Vol 36, pp 129-131
  • Authors:
    • Blanchard, C F
  • Publication Date: 1957

Media Info

  • Monograph Title: Proceedings of the Thirty-Sixth Annual Meeting of the Highway Research Board, Washington, D.C., January 7-11, 1957
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00213974
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: May 22 1972 12:00AM