Sustainable Development of Geopolymer Concrete Using Fly Ash and Coir Fibre Reinforcement: An Experimental Study

Abstract

Geopolymer concrete is a cutting-edge, eco-friendly substitute for conventional Portland cement (OPC) concrete that may reduce carbon emissions while simultaneously recycling materials from farms and factories. The purpose of this experimental research is to examine the feasibility of incorporating fly ash and coir fiber, two byproducts of thermal power plants, into geopolymer concrete (GPC) in order to promote sustainable development. Geopolymerization starts with aluminosilicate fly ash and then adds reinforcement, coir fiber, to boost the mix's flexural and tensile strengths. Both the soft and hardened forms are tested for several properties, including workability, compressive strength, tensile strength, resistance to chemicals, and water absorption. Coir fiber reinforcing improves GPC's fracture resistance, ductility, and energy absorption capacity, in contrast to the common brittleness of geopolymeric binders. The combination of fly ash and coir fiber has two positive effects on sustainable construction: increasing recycling rates and decreasing use of non-renewable materials. In line with sustainable building practices and the concept of the circular economy, the findings indicate that geopolymer concrete enhanced with coir fiber is an excellent choice for environmentally friendly infrastructure, particularly in regions abundant in fly ash and coconut husk.