Bond Geometry and Shear Strength of Steel Plates Bonded to Concrete on Heating

Abstract

As concrete deteriorates, rehabilitation work on construction elements is often needed. One of several techniques that restores, or even increases, the initial resistance of the element, is the bonding of steel plates to the original concrete element. In general, the new element behaves well under normal load conditions. However, the bonding agent may deteriorate when subjected to temperature increase, and failure may ensue. The present work reports laboratory tests that aim to analyze the influence of the geometry of the bonding on the shear resistance of the connection. The results are presented for different temperatures, two types of concrete and several bonding geometries.