Mechanical properties and durability of carbon fiber reinforced cementitious composites: A review

The substantial volume of recently published materials demonstrates the growing interest in incorporating carbon fiber (CF) as a fiber reinforcementement in cementitious composites. The addition of CF to concrete shows potential for enhancing both concrete's mechanical properties and durability. Nevertheless, the workability of fiber-reinforced concrete is significantly influenced by factors such as the dosage and uniform distribution of the fibers, which, in turn, impact its overall performance. This paper summarizes the literature on the effect of the utilization of CF on the mechanical and durability properties of cementitious composites. The paper is organized into two main sections: one covering fresh and mechanical properties, and the other focusing on durability. Notably, research findings on fresh properties, such as slump, have produced inconclusive results across various research studies. In contrast, there is consistent evidence of enhanced mechanical properties in carbon fiber reinforced concrete (CFRC), attributed to CF's ability to bridge cracks and strengthen the interfacial transition zone (ITZ). Furthermore, CFRC exhibits improved durability when subjected to various environmental conditions such as freeze-thaw cycles, acidic environments, and elevated temperatures. Finally, the paper outlines the challenges associated with CFRC with possible recommendations.