Principle of strengthening reinforced concrete structures using FRP composite material

FRP material is a type of composite material that is increasingly used in the construction industry in recent years. Due to their light weight, high tensile strength, corrosion resistance and easy to implementation makes these material preferred solution for strengthening method of reinforced concrete structural elements.In this study, literature?s experimental results are compared with American Concrete Institute (ACI440) and Turkish Seismic Design Code 2007 (TDY2007) in addition to mechanical properties of FRP material. The results of regulations have been evaluated and compared with experimental results. On the other hand a simple structure which is not suitable for current standards or regulations, low axial load carrying capacity, low strength and intended uses changed of structure?s vertical structural elements wrapped with FRP materials for strengthening. The structure?s material section properties taken experimental results of the literature have been strengthened theoretically to satisfy safe cross-section with FRP materials. Consequently it has been noted that the FRP materials enhance both strengthening and ductility of column sections.Key Words: Composite Material, FRP, Reinforced Concrete, Strengthening