Fiber-reinforced cementitious composites: recent advances and future perspectives on key properties for high-performance design
João Trajano da Silva Neto, Paulo Roberto Ribeiro Soares, Elvys Dias Reis, Priscila de Souza Maciel, Paulo Cesar Correia Gomes, Antônio Maria Claret de Gouveia, Augusto César da Silva Bezerra
Abstract
This paper comprehensively reviews fiber-reinforced concrete (FRC), focusing on workability, fiber-matrix interaction, mechanical properties, and thermo-mechanical behavior. The study investigates the influence of fiber volume and characteristics on workability. It explores the role of fiber-matrix interaction within the interfacial transition zone (ITZ) and its impact on post-cracking behavior. Different fiber types, including steel, polypropylene, natural, and synthetic fibers, are analyzed to identify their advantages, disadvantages, and effects on mechanical properties and durability. The paper discusses the influence of fibers on concrete’s tensile strength, ductility, flexural strength, and impact resistance. The relationship between fiber characteristics, volume, and matrix interaction is examined, highlighting their combined effect on composites’ toughness and thermal conductivity. The findings emphasize the need for further research to optimize fiber-reinforced composites and explore potential applications in civil construction for improved thermal comfort in buildings. This review contributes valuable insights and offers perspectives for future research in fiber-reinforced cementitious composites.