Retrofitting Techniques: A Comprehensive Review

The need of improving the structural performance of old constructed structures has grown significantly as a result to increasing concerns over deteriorating infrastructure, changing building codes and natural calamities. Retrofitting is one of the best processes to make an existing building safe against future coming earthquakes or other environmental forces. Retrofitting is the process of adding new features to older buildings, bridges and many other structures. It aims to strengthen the structure, to satisfy the load carrying capacity of structure and seismic design. This paper includes study of research papers published in past years related to various methods of retrofitting such as seismic retrofitting, retrofitting by glass fibers, retrofitting by chemicals such as epoxy resin and many other methods. Structures lose their strength in some years, some structures are important in view of public, social or any historical. Retrofitting helps to increase the strength, resistivity and lifespan of structure.