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Research Reports

Bending/Straightening and Grouting Concrete Reinforcing Steel: Review of WSDOT's Specifications and Proposed Modifications

Description: The report consists of two volumes. The first volume reviews the WSDOT's specification guidelines for field bending/straightening concrete reinforcing bars, and proposes modifications to those guidelines based on current knowledge. The second volume reviews the WSDOT's specification guidelines for resin grouting epoxy-coated concrete reinforcing bars, and suggests modifications to the guidelines for grouting based on the available information.

The recommendations for bending/straightening reinforcing bars involves bar diameter, bend diameter, heating temperature (hot-bending), and use of non-strain aging steel. The recommendations for resin grouting reinforcing bars involves embedment length hole diameter, and type of resin.

  • Date Published: December, 1988
  • Publication Number: WA-RD 168.1
  • Last Modified: June 12, 2007
  • Authors: Khossrow Babaei, Neil M. Hawkins.
  • Originator: Washington State Transportation Center (TRAC)
  • # of Pages: 74 p., 2,307 KB (PDF)
  • Subject: Bending, Cracking, Embedment (Building), Epoxy resins, Diameter, Grouting, Guidelines, Laboratory tests, Metal working, Recommendations, Reinforced concrete, Reinforcement (Engineering), Reinforced steel, Reinforcing bars, Specifications, Straightening.
  • Keywords: Concrete, rebar, reinforcing bar, bending, embrittlement, cracking, grouting, embedment length.
  • Related Publications: Bending/Straightening Concrete Reinforcing steel: Review of WSDOT's Specifications and Proposed Modifications, (WA-RD 168.2).
    Grouting Concrete Reinforcing Steel: Review of WSDOT's Specifications and Proposed Modifications, (WA-RD 168.3).


This abstract was last modified April 29, 2008