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Abstract In the last 15 years, the use of Fiber Reinforced Polymers<>(FRP) as internal concrete reinforcement has gained a lot of interest worldwide. Many applications have been reported in the literature to demonstrate their use in infrastructure applications to make use of their superior non-corressive and non-conductive performance. The contribution of the Egyptian researchers in this field has been restricted as this type of advanced reinforcement is hardly available in the local market. On the other hand, the imported product is very expensive and the selection alternatives, with respect to the bar type, size, and surface configuration, are limited. In house manufacturing of FRP bars has been described in this research using locally available glass fiber roving and polyester to produce mono type GFRP bar. Because the GFRP reinforced concrete beams are brittle as the mono GFRP bars do not exhibit yielding, the ductility of the GFRP beams is a matters of concern. One method to improve the ductility is to use hybrid bars. A hybrid bar is made by mixing different types of fibers that possess different modulus of elasticity. In the current work, hybrid FRP bars made of glass fibers mixed with nylon fibers were used. The behavior of the in-house manufactured mono as well as hybrid FRP bars as concrete reinforcement is investigated. Simply supported beams (120 x 200 x 1730 mm) are reinforced with FRP bars and tested till failure. The behavior is studied in terms of. |