Effects of Hybrid Fibers on Mechanical Behavior of Nanocomposites

Abstract

Geopolymers (GP) offers an environmentally friendly alternative to traditional cement, significantly reducing carbon emissions in concrete construction. However, the potential of Hybrid Fiber-Reinforced Fly Ash-based GP (HFGP) composites, which incorporate microfibers and nanoparticles, remains underexplored. This study aims to enhance the mechanical and microstructural properties of HFGP blends by adjusting the proportion of nano calcium carbonate. The HFGP was produced using 1% carbon fibers and 0.5% basalt fibers, with varying levels of calcium carbonate (1%, 2%, 3%, and 4%). Results showed that the HFGP blend containing 3% calcium carbonate exhibited the highest levels of hardness, compressive strength, fracture toughness, impact strength, and flexural strength.