Research Progress and Applications of Fe-Mn-Si-Based Shape Memory Alloys on Reinforcing Steel and Concrete Bridges

In civil engineering, beam structures such as bridges require reinforcement to increase load-bearing capacity and extend service life due damage, aging, degradation under long-time services disasters. The utilization of Fe-based shape memory alloys (Fe-SMA) reinforce has been proven efficient reliable, the recovery stress activated Fe-SMA can satisfy requirements. This article overviews material characteristics mechanical properties Fe-SMA. Furthermore, principle thermal activation for reinforcing beams using is described. On this basis, joining methods between members reinforced components are reviewed, existing research applications analyzed steel concrete beams. Finally, given current shortcomings, paper puts forward perspectives that need be studied promote Fe-SMA’s application in engineering.