Enhancing the Performance of Geopolymer Concrete with the Addition of Silica Fume

The present study conducted a preliminary investigation on the effects of incorporating silica fume (SF) into fly ash-based geopolymer concrete with the aim of improving its characteristics. The incorporation of SF into concrete is a common practice aimed at improving its mechanical properties, durability, and resistance to environmental degradation. An analysis was conducted on various mixtures of geopolymer concrete with varying amounts of SF. The incorporation of SF has been observed to enhance the fresh, hardened, and microstructural properties of geopolymer concrete. The study confirmed the efficacy of SF as a viable additive for enhancing the performance of geopolymer concrete. This improvement can be attributed to an increase in microstructure density and a reduction in porosity. The research provides evidence to the concept that the incorporation of SF in geopolymer concrete has the potential to enhance its efficacy and sustainability over an extended period, thereby rendering it more environmentally sound. The findings of this study can be employed to enhance the utilisation of SF in geopolymer concrete and aid in the advancement of eco-friendly construction materials, which could potentially mitigate the ecological footprint of the construction sector.