الفهرس 
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Abstract
The last few decades have been cleared by deterioration of many concrete structures due to the corrosion of steel reinforcements that required costly repairs or replacements. To maintain the corrosion problem, several methods, such as epoxy coated rebar or cathodic protection, have been developed. To date, all of them have showed limited success (Keesler and Powers 1988; Rasheeduzzafar, et al. 1992). In recent years, research has been carried out on fiber reinforced plastic (FRP) bars as an alternative to steel reinforcement. These FRP rebarhave already shown a promising future to solve the corrosion problem in many projects in addition to many advantage like light weight ……etc. However, due to its elastic brittle behavior and lower modulus of elasticity, it also induces unsatisfactory structural ductility and serviceability.
The aim of this research to discuss the bond performance for hand lay-up manufactured GFRP bars whilst it used as reinforcement concrete.The experimental tested specimens in this research are 13 beams with constant dimension 1650 mm. × 300 mm. × 150 mm. They tested in flexural under linear statically loading to realize the influence of development length of the composite materials in construction field. Behavior of these simply support reinforced concrete beams can be investigated by recording the following terms during loading such as deflection, rotation of each end support, initial cracking load, crack pattern, failure load and mode of failure.
The studied parameters in this research are the influence of concrete confinement with stirrups, concrete cover and concrete compressive strength on the bond behavior of concrete beams.
The obtained results showed the improvement in bond performance between GFRP bars and surrounding concrete when cover and compressive strength increase, in addition to the observation with increasing confinement stirrups at lab splice location. Keywords: Bond performance; concrete; FRP Manufacturing; Development length;