The evolution of building materials and technologies is imperative in response to the growing demands for large-scale infrastructure. Steel fiber-reinforced concrete (SFRC) has gained widespread usage due to its notable benefits, such as enhanced crack-bridging capacity and increased shear strength, reducing the need for traditional reinforcement. This study investigates the effects of varying fiber content and compaction times on the mechanical properties of SFRC. Laboratory tests were conducted on 24 different concrete mix designs, producing a total of 216 specimens, including blocks, cubes, and beams. The findings indicate that the optimal fiber content and compaction time significantly influence the compressive, flexural, and tensile strengths of SFRC. A detailed mathematical and statistical analysis highlights the importance of these parameters, providing insights for optimizing SFRC performance in construction. Future research directions are suggested to enhance further the understanding and application of SFRC in the construction industry.

This research investigates the application of plastic fiber reinforcement in pre-tensioned reinforced concrete railway sleepers, conducting an in-depth examination in both experimental and computational aspects. Utilizing 3-point bending tests and the GOM ARAMIS system for Digital Image Correlation, this study meticulously evaluates the structural responses and crack development in conventional and plastic fiber-reinforced sleepers under varying bending moments. Complementing these tests, the investigation employs ABAQUS’ advanced finite element modeling to enhance the analysis, ensuring precise calibration and validation of the numerical models. This dual approach comprehensively explains the mechanical behavior differences and stresses within the examined structures. The incorporation of plastic fibers not only demonstrates a significant improvement in mechanical strength and crack resistance but paves the way for advancements in railway sleeper technology. By shedding light on the enhanced durability and performance of reinforced concrete structures, this study makes a significant contribution to civil engineering materials science, highlighting the potential for innovative material applications in the construction industry.