INVESTIGATING AND UPGRADING ANCHORAGE PERFORMANCES OF FRP GRIDS BONDED INTERNALLY IN CONCRETE WITH UNDERWATER EPOXY PUTTY

Abstract

The purpose of this study is to investigate and evaluate the anchorage performance of FRP grids bonded internally in concrete with underwater epoxy resin and to develop a upgrading method of anchorage by using FRP grids within the anchorage range. A pull-out test is used to examine the bonding and anchorage performances. It is found that the anchorage performances can be improved by using the additional FRP grids and will be affected by both factors of the stiffness and bonding area of bonded FRP grids. Finally, some evaluating equations are proposed in this paper.