Mechanical characterisation of waste wood ash-based green geopolymer concrete incorporated with waste rubber and polypropylene fibre

Geopolymer concrete (GPC) had less energy absorption, ductility, impact energy, brittleness and to improve the mentioned properties, fibres with different properties and having the potential to enhance the performance of GPC can be incorporated. This study aimed to produce green geopolymer concrete incorporated with fly ash, waste wood ash, waste tire rubber fibre, and polypropylene fibre. In this study, polypropylene and rubber fibre were added by 0-2% (at 0.5% intervals) of volume fractions, and the effects of fibre hybridisation on the mechanical behaviour have been analysed. The results explored that the addition of individual fibre up to 1% attained the maximum mechanical characters at all ages of concrete. The findings showed that the mix with 0.5% PP + 0.5% rubber attains the maximum strength, and the characteristics were increased by 13.5%, 11.1%, and 12%. The research provided an intellectual approach to produce eco-friendly green geopolymer concrete incorporated with waste materials.