Assessing the Impact of Silica Fume and Metakaolin as Substitutes for Cement in Fiber-Reinforced Concrete

This study conducts an in-depth evaluation of Silica Fume and Metakaolin as potential alternatives to cement in fiber-reinforced concrete (FRC). The paper aims to explore the mechanical, physical, and durability properties of FRC mixtures integrated with varying proportions of these materials. Key parameters such as compressive strength, flexural strength, and permeability were measured and compared with conventional FRC. Experimental results showed that partial replacement of cement with Silica Fume and Metakaolin improves the strength and durability properties of the FRC, making them viable substitutes. These findings not only suggest promising performance outcomes but also highlight the potential for more sustainable concrete production practices. Future studies are recommended to understand the long-term effects and optimum proportions of these materials in FRC.