Mechanical behaviour of Steel fibre reinforced concrete beams: A review

Abstract

Concrete is one of the most widely utilized material in the world. It is mainly used in construction due to its capability to be formed to any required shape. This because of the good workability of the fresh concrete. However, concrete is still a brittle material that makes it tends to fail under tension. Thus, a material with high tensile strength needs to be included in the mixture such as steel rebars and steel fibres (SF). This review paper summarizes previous studies that investigated the effect of SFs addition on the mechanical properties of reinforced concrete (RC) beams. Researchers in all previous studies agreed that the addition of fibres in RC beams can noticeably improve the mechanical properties, serviceability, and durability of RC beams. Generally, the effect of SFs on the RC beams was dependent on various factors such as aspect ratios, volume percentages, and type of SFs. It was confirmed that the optimum SFs content ranged from 0.75 to 1.5 V.%, depending on the strength of concrete. However, more studies are required to further understand the effect of fibres on the properties of concrete in beams with different cross-sectional shapes.