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.
Washington State Transportation Center (TRAC)
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.