Research Status and Outlook on High Temperature Performance of Fiber Concrete

Abstract

Fiber concrete is a novel composite material that has widespread use in the construction industry. However, high-temperature environments can cause severe damage to concrete structures. Therefore, it is essential to study the refractory properties and microscopic changes of fiber concrete under such conditions. This paper reviews the current research status of steel fiber concrete, polypropylene fiber concrete, and hybrid fiber concrete, which are commonly used in practical engineering, and summarizes their respective roles in concrete by combining theory and practice. The review also looks forward to future research directions and development trends to provide a reference for related research. Studies have demonstrated that adding a suitable amount of fibers can significantly enhance the high-temperature performance of concrete. However, different fiber types have varying effects on concrete. The high-temperature performance of fiber concrete is also influenced by various factors, including concrete mix ratio, fiber type, and admixture. Future research should focus on investigating the mechanism and microscopic changes in the high-temperature performance of fiber concrete, developing new fiber materials, optimizing concrete mixing ratios, and exploring the application of fiber concrete in practical engineering.