Steel Fiber in Concrete – A Review
摘要
Steel fiber-reinforced concrete (SFRC) has gained significant attention for enhancing conventional concrete's mechanical properties and performance. This review examines recent studies on steel fibers in concrete reinforcement, focusing on their impact on mechanical behavior and durability. It discusses various fiber types, with an emphasis on steel fibers like the round crimped, hooked end, glued, and flat crimped fibers, and factors influencing their selection, such as tensile strength and corrosion resistance. Experimental investigations, including compression and flexural tests, demonstrate the benefits of steel fibers in improving flexural behavior and crack performance despite potential limitations like reduced compressive strength in some cases. The application of SFRC in infrastructure, precast components, industrial floors, and tunnel linings is reviewed, with case studies showcasing its versatility and effectiveness in enhancing structural performance, durability, and resistance to chemical exposure and freeze-thaw conditions. Additionally, this paper reviews the potential of SFRC for interlocking blocks, which are considered part of the Industrialized Building System (IBS). The review concludes by highlighting the importance of steel fiber reinforcement in improving concrete structures, noting that the performance of SFRC shows potential for application in interlocking blocks, and suggests future research directions to optimize the use of steel fibers in various concrete applications and better understand their performance under different conditions.