Abstract
Epoxy resin filler is usually applied to ensure the slip resistance and to protect further corrosion on the friction surfaces when corroded steel members were strengthened by additional plates with high strength bolts. In order to clarify the influence of epoxy resin filler on the strengthening, tensile tests of bolted connections with various thickness of resin layers were conducted. It was found that slip resistances of the bolted connections were somewhat higher than those of the connections without resin, even though thicker resin layer definitely caused reduction of bolt tension.
