A Review of Recent Advances in the Influence of Plant Fibers on the Performance of Cementitious Materials

This paper provides a comprehensive review on the effects of plant fibers on cement-based materials, focusing on the enhancement of mechanical properties and durability. Plant fibers, as a sustainable and renewable resource, are increasingly recognized for their potential in improving the performance of cement-based composites. The review begins with an exploration of fiber composition and structure, followed by a detailed discussion of interfacial modification strategies that enhance the bond between plant fibers and cement matrices. Key mechanisms such as fiber dispersion, bridging, and internal curing are examined to explain how plant fibers impact hydration, pore structure, and mechanical properties like compressive strength, flexural strength, splitting tensile strength, and impact toughness. The paper also reviews the role of plant fibers in enhancing the durability of cement-based materials, particularly in terms of resistance to alkali degradation, acid attack, freeze–thaw cycles, chloride ion penetration, and self-healing behavior. The findings suggest that plant fibers offer a dual benefit by improving both the mechanical and durability performance of cement-based materials. The paper concludes with recommendations for future research directions, emphasizing the need for better understanding the interactions between plant fibers and cement matrices to optimize the long-term performance of plant fiber-reinforced cementitious composites.