Potential of Using Industrial Wastes for Production of Geopolymer Binder as Green Construction Materials

Rice husk ash, Municipal Solid Incineration Ash and coal fly ash was served as aluminosilicate precursor in synthesis of one-part alkali activated geopolymer binder. These by-products industrial wastes were subjected to physio-chemical processing of materials (mechanochemical synthesis) together with different naturally originated sources of alkaline earth metal cations into one-part alkali activated (geopolymer) binder binders. The binder of hydraulic binders was assessed based on their strength development attributes and morphology with respect to silica content, diffusion of Calcium ions and compositions of Alkali activator. The particle size distribution, the chemical composition, mineralogy, bond environment, of binder particles and effective immobilization of heavy metals of hydrated binder pastes were also inspected. The results highlighted that the ternary blend of combustion ashes to produce hydraulic binders with strength development qualities and safe disposal as material for building construction. (C) 2019 Elsevier Ltd. All rights reserved.