الفهرس 
BEHAVIOUR OF CONCRETE ELEMENTS REINFORCED WITH FIBER-REINFORCED POLYMER (FRP) BARSOnly 14 pages are availabe for public view
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Abstract
One of the primary factors affecting the service life of reinforced concrete structures is the corrosion of steel reinforcement, especially in structures subjected to aggressive environments as dams, tanks, and bridges. To avoid corrosion, steel reinforcing bars should be coated with non-corrosive materials in order to meet the requirements of ultimate limit state and durability for these constructions. However, the coating leads to additional cost. Fiber-reinforced polymer (FRP) bars have been used for the past 40 years as an alternate material to steel reinforcement bars. Carbon, glass, and aramid fibers are the most prevalent varieties. High specific strength and exceptional corrosion resistance are provided by FRP bars. Whereas, the main problem of using FRP bars as alternate to steel bars is the linear elastic stress-strain relationship up to failure without any yielding of FRP bars that leads to a brittle failure without any warning. Thus the use of FRP-reinforced structures is limited. Steel-FRP composite bars (SFCBs) are a newly developed reinforcing material for flexural structural elements. It combines the benefits of the two materials by using an inner steel core surrounded by FRP. SFCBs have excellent corrosion resistance, high strength, good ductility, high elastic modulus, and steady secondary stiffness.