Performance and Microstructural Characterization of Flyash and GGBS Based Geopolymer Mortar

Abstract

A Geopolymer is a new-generation material widely used in the construction industry. It is newlinethe sustainable one in which the waste materials produced from thermal power plants are newlineused as partial or complete replacements for cement to make the environment free from newlinethe release of carbon dioxide emissions from cement manufacturing companies. For newlinevarying sodium hydroxide different molarities, i.e., 2, 4, 6, 8M. For different in the binder newlinecontent 1:1, 1:2 and 1:3 by varying ratios of sodium silicate to sodium hydroxide ratios 1.5, newline2, 2.5,3. Different mixes are mixed and 0.55 constant ratio maintained throughout the newlineresearch. newlineThe thesis deals with studying material properties, processing and characterization of fly newlineash-based Geopolymer. The thesis widely describes the characterization and chemical newlinecomposition of fly ash-based Geopolymers at ambient and oven temperatures. Various newlinetests are performed including X-ray diffraction (XRD), Scanning Electron Microscope newline(SEM), Energy Dispersive Spectroscopy (EDS), DSC, FTIR, TG/DTA, and physical and newlinemechanical properties, including workability and compressive strength tests, durability newlinetests such as sorptivity, AMLF, AAF, ASLF and ADLF respectively. Test results exhibited newlinethe potential benefit of fly ash-based Geopolymer as an alternative to ordinary Portland cement for the concrete industry. newlineKEYWORDS: Fly ash, GGBS, microstructure analysis, physical and mechanical properties newlineand durability tests newline