STUDY ON THE EFFECT OF TEMPERATURE VARIATIONS ON THE BONDING OF CONCRETE OVERLAYS

Preventive strengthening of existing concrete pavements with bonded concrete overlays leads to economy. With the background observations of areas of loss of bond on some projects, this study was undertaken to assess the adverse effects of large temperature variations that occur when overlaying is done in intemperate weather. An insulation covering was used to try to counteract these weather effects. Panels were also overlaid in temperature environs with shear pegs and epoxy bonding for comparison. Temperature and bond strength data developed in interior, edge, and corner portions of panels in different cases are given. It is shown that areas of inadequate bond result along panel peripheries when concreting is done under large temperature variations. This can be effectively counteracted with the insulation covering.

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Filing Info

  • Accession Number: 00388868
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Nov 30 1984 12:00AM