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BONDING AND ANCHORING CHARACTERIZATION BETWEEN FRP SHEETS, CONCRETE, AND VISCOELASTIC LAYERS UNDER STATIC AND DYNAMIC LOADING

An innovative concept for normalizing the multiple seismic performance objectives of retrofitted structures was recently introduced by the authors. Referred to as a damping-enhanced strengthening, this integrated damping and strengthening strategy included the bonding component between FRP sheets and viscoelastic layers as well as the anchoring component of FRP sheets into concrete. Although anchorage of FRP sheets into concrete with FRP rods was successful in some applications, their joint behaviour under static and dynamic loading needs to be evaluated systematically. This paper presents an experimental research program on the bonding and anchoring characterization among FRP sheets, concrete surface, and viscoelastic layers. The effects of temperature and load rate on the joint properties are investigated. A simple analytical model is proposed based on the ACI design equation.