الفهرس 
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Abstract
This study shows the opportunity to study the effect of fire on RC beams with different types of fibers such as basalt and glass, so the fire is one of the importance of physically damage which effect on the durability of the structure.
This study contains fourteen samples with dimensions (150 × 300 × 1800 mm3) and divided into two groups according to the temperature to which the sample is exposed.
The first group consisted of seven specimens that were tested at a temperature of 25 ° C.
The second group consists of seven samples with the same dimensions and reinforcement for the first group with exposure to fire at a temperature of 500° c for two hours.
1.2 Aim, objectives and scope The objectives of this study can be summarized as follows:
Studying the behavior of RC beams reinforced with steel bars, GFRP bars and BFRP bars. Study the effect of temperatures on RC beams with steel bars and FRP bars. Developing a finite element modeling tool to predict and analyze the reinforced concrete beams structural response and behavior by using ANSYS program. Compare experimental results with theoretical results.
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7.2 CONCLUSIONS Within the range of variables and obtained measurements, the following conclusions can be drawn:
1. The failure load for the tested beams reinforced by BFRP bars was much greater than the load carrying capacity of beams reinforced by steel or GFRP bars, this is due to the tensile strength of BFRB bars which was higher than steel and GFRP bars by 166.5% and 191.4% respectively. The failure load reaches in the case of BFRP, (1S-2B) and (2S-1B) beams to 111.9%, 101.25% and 98% of the steel beam failure load, respectively. But for the beams reinforced by GFRP bars, it reaches in the case of GFRP, (1S-2F) and (2S-1F) beams to 53.45%, 66.23% and 78.4% of the steel beam failure load, respectively.
2. Deflections of beams reinforced by BFRP or GFRP bars were significantly higher than the deflection of the beam reinforced by steel bars, this is due to the lower modulus of elasticity for BFRP and GFRP bars compared to steel bars.
3. It has been shown in the experiment that the beam reinforced by steel bars has a bilinear stress-strain dependence, in contrast, the beams reinforced by BFRP or GFRP bars have almost a linear stress-strain dependence until beam failure.
4. The highest bars strain was achieved by the BFRP bars followed by the GFRP bars and then followed by the steel bars.
5. At the degree of fire 500°c, all FRP beams have the same mode of failure, first by complete separation of reinforcing bars and then followed by concrete cover spalling.