Rebar is a common reinforcement material,often used in bridge engineering and marine engineering, but overproduction of steel materials can lead to significant pollution and energy consumption.
So finding alternative materials for steel is a very meaningful thing. At present, carbon fiber is the most suitable alternative material because of its high strength,stable performan,celight mass and corrosion resistance. It can not only reduce the self-weight of the structure, but also enhance the concrete structure and ocean corrosion. In addition, it can improve the durability of buildings, reduce maintenance costs.
But there are many difficulties that we need to solve such as structural design, manufacturing costs, etc. According to the study, carbon fiber is about 4 times as strong as steel and a third as heavy. But the price is much expensive than steel.