Fiber reinforced composites have the following characteristics :(1) higher specific strength and modulus; (2) designability of material properties :(3) good corrosion resistance and durability; (4) The coefficient of thermal expansion is similar to that of concrete. These characteristics make FRP materials can meet the modern to the large-span structure, towering, overloading, light weight, high strength, and the needs of the development of work in harsh conditions, at the same time also can meet the requirements of modern construction industrialization, therefore is more and more widely used in all kinds of civil buildings, Bridges, roads, in the field of ocean, hydraulic structures and underground structure.
