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Research Reports

Evaluation of Concrete Overlays for Bridge Applications

Description:

This report documents performance of 12 concrete bridge decks that were rehabilitated and/or protected with latex-modified concrete and low-slump dense concrete overlays in order to prevent future de-icing salt penetration and reinforcing steel corrosion.

Regardless of concrete deterioration caused by rebar corrosion, the overlaid bridge decks will require maintenance in the form of resurfacing in the future. This maintenance may be due to traffic action and a severe environment causing surface distress such as scaling, rutting, and a lack of skid resistance, or stripping of the overlays from the decks.

There are indications that the continued corrosion of reinforcing steel in the salt contaminated underlying decks is less extensive in the absence of overlay surface cracking.

 

  • Date Published: October, 1987
  • Publication Number: WA-RD 137.1
  • Last Modified: August 31, 2007
  • Author: Khossrow Babaei.
  • Originator: Washington State Transportation Center (TRAC)
  • # of Pages: 96 p., 1,751 KB (PDF)
  • Subject: Bridge decks, Concrete, Corrosion protection, Defects, Deicing chemicals, Density, Deterioration, Environment, Evaluation, Latex modified concrete, Maintenance, Overlays (Pavements), Pavement distress, Pavements, Performance, Reinforcing steel, Resurfacing, Slump test, Traffic.
  • Keywords: Bridge decks, reinforcing steel, corrosion, salt, deterioration, latex-modified concrete, low-slump dense concrete.
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This abstract was last modified April 29, 2008