INNOVATIVE USE OF SHAPE MEMORY ALLOYS AS REINFORCEMENTS FOR CONCRETE BEAM-COLUMN JOINTS: AN OVERVIEW

Abstract

Shape memory alloys have two unique properties of shape memory effect (SME) and superelasticity (SE) that are the ability for large inelastic deformations recovery after heating (SME) and stress removal (SE). In recent years, structural engineers used these materials in the field of civil engineering’s, such as the applications of SMAs in the repair, retrofitting, and rehabilitation of concrete structures, dampers, vibration isolation systems, vibration control, and prestressing members, etc. To overcome and reduce the potential seismic risk of structures, understanding the characteristics of SMAs materials under different loading conditions is one of the critical steps. Despite the various types of researches carried out on the SMAs' structural applications, there was a need for a review of the progress of the current method in structures. To address it, a brief review of the applications of SMAs in Reinforced Concrete (RC) beam-column joints was conducted.