Incorporation of Waste Wood Ash and Polypropylene Fibre on the Production of Sustainable GPC

Abstract

AbstractGeopolymer is an excellent binder material that belongs to the innovation of cement less concrete technology in the construction industry. The utilization of wastes in concrete has been growing well with incorporating in geopolymer concrete. Waste wood ash is the most spectacular waste material procured from all hotels. This study altered the fly ash with waste wood ash by varying the replacement percentages from 0 to 100% at 10% increment. The mechanical characterization was found to optimize the molarity of the alkaline activator, the solution to binder ratio, and the wood ash/fly ash ratio. The polypropylene fibre was added by 0–2% of volume fraction to improve the property of geopolymer in brittleness and crack resistance. In addition, the effects of adding polypropylene fibre on the mechanical properties of GPC were investigated. The research findings revealed the enhancement in compressive and tensile strength with 30% waste wood ash replacement. Further, the mechanical characters of GPC such as compressive strength, tensile strength, and flexural strengths were enhanced by 61%, 11%, and 12%, respectively, with the incorporation of 1% of polypropylene fibre. The research hypothesis focused on finding an alternate for fly ash, reducing alkaline activators quantity, and improving strength with PP fibre addition.KeywordsGeopolymer concreteWaste wood ashPolypropylene fibreSustainable GPCFly ash