Steel bars in reinforced concrete structures are exposed to the environmental damages such as Chlorine ions invasions of their surrounding environments which may result into the corrosion and decrease of adhesion and structural resistance of reinforced concrete. Using the GFRP Composite bars with anti-rust properties and high tensile strength and of course fragile, is proposed as the best choice for the steel bars and the drawing has to be based on the methods that make the concrete reach its final tension under the pressure before the bar and taking into consideration that the ordinary concrete has a limited final fragile strain; it may result into minimizing the final permitted tensile strain of the composite bars in the design of these kind of reinforced structures. In the present study, the ability to use HPFRCC fiber flexible concrete instead of ordinary concrete to reach higher pressure strain and the better utilization of the final capacity of composite bars are studied. Two concrete bars are reinforced with GFRP bars with the ratio equal to the balance and tested; one of the bars is manufactured with ordinary concrete and the other one is made of HPFRCC concrete. Bending behavior, the amount of load and displacement, effective stiffness, the amount of energy absorption and the balance ratio of the beams were computed and compared with ACI440-15 Bylaw. The results have shown that using the HPFRCC concrete instead of the ordinary concrete may result into better improvement of the plasticity, energy absorption amount, growth balance ratio and with considering some remarks including observation of the minimum amount of reinforcement and balance ration; it is proposed that the HPFRCC concrete to be used in the reinforcement of the concrete structures, reinforced with GFRP.