| Abstract Scope |
Natural fibers are promising reinforcements for cementitious composites, but their hydrophilic nature, dimensional instability, and limited compatibility with alkaline matrices can compromise composite performance and durability. This study reviews surface treatment strategies used to improve the interaction between lignocellulosic fibers and cement-based matrices. Literature addressing alkaline treatment, silane coupling agents, acetylation, hornification, polymer impregnation, mineralization, and combined treatments was analyzed. The reviewed studies indicate that surface modification can reduce water absorption, improve fiber-matrix adhesion, increase dimensional stability, and delay degradation mechanisms associated with the alkaline environment. Nevertheless, treatment efficiency depends on fiber type, chemical concentration, exposure time, processing conditions, and the intended application. Excessive treatment may damage the fiber structure and reduce mechanical performance. Overall, controlled surface treatments represent a relevant route to improve the durability and mechanical behavior of natural fiber-reinforced cementitious composites, supporting their broader use in sustainable construction materials. |