This study addresses the imperative investigation into how diverse steel fiber types influence the flexural tensile behavior of concrete beams. The application of fiber reinforcement in concrete beams has garnered attention for its potential to augment strength, resilience, and resistance to cracking. However, there are lingering uncertainties regarding the effectiveness of distinct fiber types in enhancing flexural tensile performance. This research endeavors to bridge this knowledge gap by meticulously examining the impact of various fiber types on reinforced concrete beams, encompassing no fibers (Control), 3D Hooked-end steel fibers, 4D Hooked-end steel fibers with varying characteristics, and the non-steel Master Fiber MAC 2200CB. Key findings from this study demonstrate that steel fiber reinforcement yields substantial improvements in the flexural tensile behavior of concrete beams: - The introduction of 4D hooked-end steel fibers with an aspect ratio of 65 (0.9mm diameter) results in an impressive 73% increase in the maximum flexural load compared to fiber-free beams. - Incorporating 3D (80/60), 4D (80/60), and macro-synthetic polypropylene fiber into the concrete mixture enhances the maximum flexural load by 16.6%, 42%, and 11.7%, respectively. - The shift from 3D to 4D steel fibers is associated with a significant 21.8% increase in the maximum flexural load and a 16.4% improvement at a deflection of 0.65mm, highlighting the superior bridging effect of 4D steel fibers. Increasing the diameter of 4D hooked-end specimens from 0.75mm to 0.90mm while maintaining a consistent 60mm length contributes to a 21.5% boost in the maximum flexural load and an impressive 111.7% improvement at a deflection of 0.65mm. In conclusion, the thesis underlines the merits of fiber reinforcement in concrete beams, including enhanced durability, augmented structural performance, cost-effective maintenance, prolonged service life, and expanded design possibilities. These findings carry substantial implications for the construction sector, enabling well-informed choices regarding incorporating fiber-reinforced concrete in diverse structural applications.