Alkaline Activator Dependence Morphological, Compression Strength and Formation of Fly Ash Geopolymer

Abstract

Concrete, which consist of cement is widely used in the development of housing and infrastructure. Nevertheless, there are environmental and health concerns that arises from the production of cement. Fly ash (FA), considered as waste from the generation of electricity was utilized to produce FA geopolymer which can be used as an alternative to Portland cement. The purpose of this study is to investigate the influence of different concentration of sodium silicate (Na₂SiO₃) on FA geopolymer formation and to elucidate the chemical and physical properties of FA geopolymer by characterization using Fourier-transform Infrared Spectroscopy (FTIR) to investigate new bonding, Scanning Electron Microscope (SEM) to analyse morphology and microstructure and compressive strength test to test geopolymers compressive strength.