Table of Contents
Buildings, Volume 9, Issue 6 (June 2019)
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Cover Story (view full-size image) The effectiveness of slightly reinforced thin U-shaped cementitious mortar jacketing for the repair [...] Read more. The effectiveness of slightly reinforced thin U-shaped cementitious mortar jacketing for the repair of damaged shear-critical RC beams is experimentally investigated. Five beams over-reinforced against flexure and under-reinforced against shear with different ratio of stirrups were initially subjected to monotonic loading until failure. Beams have been designed to fail in shear after wide diagonal cracking under various strength capacities and different damage levels. The heavily damaged beams were jacketed with mild steel small diameter U-shaped stirrups and rebars, and retested. Retrofitted beams exhibited increased shear strength, reduced brittleness and higher deflections with respect to the initial ones. The level of the initial damage influences the efficiency of the jacketing. Jackets can alter the failure mode from brittle shear to ductile flexural under certain circumstances. View this paper.