Improving the conditions of existing bridges often requires the addition of new portions to the in-place structures. This may be done by drilling and grouting reinforcing bars to join the new portion to the existing structure. Recently, fast-curing resins have been developed that expedite the grouting of reinforcing bars. On the other hand, epoxy-coated bars are specified in certain bridge components to prevent bars' corrosion. Resin grouting of epoxy-coated bars has cast doubt on the bond of the resin grout to the epoxy coating. This report is a brief summary of volume one of Bending/Straightening and Grouting Concrete Reinforcing Steel: Review of WSDOT's Specifications and Proposed Modifications.
June 13, 2007
Khossrow Babaei, Neil M. Hawkins.
Washington State Transportation Center (TRAC)
- # of Pages: 1 p., 73 KB (PDF)
- Subject: Bonding and joining, Bridges, Corrosion protection, Epoxy resins, Grouting, Laboratory tests, Metal working, Reinforcing bars, Recommendations, Reinforced concrete, Reinforcement (Engineering), Reinforced steel, Specifications, Structural connection.
- Keywords: Bonding, bridges, corrosion, concrete, embedment, embrittlement, epoxy-coated bars, grouting, joining, length, rebar, reinforcing steel, resins.
- Related Publications: Bending/Straightening and Grouting Concrete Reinforcing Steel: Review of Washington Department of Transportation's Specifications and Proposed Modifications, (WA-RD 168.1).
Bending/Straightening and Grouting Concrete Reinforcing Steel: Review of WSDOT's Specifications and Proposed Modifications, (WA-RD 168.2).
This abstract was last modified April 29, 2008