A Sample of International Production FRP Reinforcement for Concrete Structures
نویسنده
چکیده
fi ber reinforced plastic (FRP) re. nforcement is one of the most promising new developments for concrete structures. FRP reinforcing elements provide lighter, easier to assemble, and more durable structures that are free of the deterioration caused by corrosion of steel. FRPs consist of synthetic or organic highstrength fibers, most of which are impregnated with a resin matrix. They are available in the form of grids, rods, and ropes for reinforcing and prestressing concrete members. For lightly loaded structural elements such as reinforced concrete cladding panels, the corrosion resistance of FRP may allow concrete cover requirements to be reduced, thereby saving materials and producing lighter structures. However, in other applications, to avoid concrete splitting failures rising from the load transfer between FRP reinforcement and concrete, the minimum cover requirement for FRP systems will usually be larger than for steel. Commercially available FRP reinforcement is currently made of carbon, aramid, or glass fibers, impregnated with a resin. Some aramid fiber reinforcement consists of aramid filaments without a resin matrix. The general advantages of FRP reinforcement compared to steel are:
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