| Abstract Scope |
Natural fiber-reinforced cementitious composites have attracted increasing attention as sustainable materials capable of improving the mechanical response of brittle cement-based matrices. This study reviews the mechanical performance of cementitious composites incorporating lignocellulosic fibers, with emphasis on compressive strength, flexural behavior, tensile response, toughness, impact resistance, and post-cracking performance. Scientific studies involving sisal, coconut, jute, curaua, bamboo, piassava, and other natural fibers were analyzed. The reviewed literature indicates that fiber incorporation may enhance toughness, crack control, energy absorption, and flexural ductility, particularly in non-structural elements and thin cementitious components. However, compressive strength may decrease depending on fiber content, dispersion, water absorption, and increased porosity. Mechanical performance is strongly influenced by fiber geometry, volume fraction, orientation, treatment, and fiber-matrix adhesion. Therefore, optimized mixture design and adequate processing are essential to obtain reliable mechanical benefits while maintaining the sustainability advantages associated with natural fiber reinforcement. |