A Study On Properties Of Non-metallic Fiber Reinforced Plastic Concrete

As a modern engineering material quickly developed in the latter half of the 20th century, non-metallic Fiber Reinforced Plastic Concrete is renowned for its wide applications. It is a kind of complex material, in which the non-metallic fiber, such as fiber glass, aramid fiber and carbon fiber is reinforcement while resin, such as epoxy resin, unsaturated polyester resin and vinyl resin, matrix. Fortifying fiber is the major component against stress whereas resin glues the fiber into an organic whole, which not only enables the fiber to sustain pressure together but also prevents the fiber from mechanic breakage or chemical corrosion. Researchers abroad have already achieved quite a lot in their research into this material as a substitute for reinforcing steel bar as well as its applications in the prestressed concrete structure, which started nearly 50 years ago. In China, some researchers have also made some explorations into these issues. This study, with the fiberglass reinforced plastic produced by Ha' erbin GRP Institute being used to replace reinforcing steel bar, focuses on the prestressed fiberglass reinforced plastic concrete beam series of experiments are first carried out to test the material behavior of GRP, including its mechanical and physical properties, and corrosion resistance. Then, based on the results, prestressed concrete beam is trial produced as a substitute for reinforcing steel bar. Finally experimental investigations and theoretical analyses are made to check the strained condition of this beam . The study is expected to be useful and helpful in such aspects as the use of test beam in real projects and the applications of new materials.