A Sustainability Approach to Geopolymer Brick Manufacture Using Mine Wastes
Fly ash (FA); Ground granulated blast furnace slag (GGBS); Iron ore tailing (IOT); Sodium silicate (Na2SiO3)
India has tons of by-products of industries like fly ash, ground granulated blast furnace slag (GGBS), and mine tailings from different ores. By incorporating these wastes in bricks, the carbon footprint can be minimized. This research pivots around the use of iron ore tailings (IOT) and slag sand as a substitute for clay or shale in the manufacture of stabilized geopolymer blocks. Iron ore tailings and slag sand were used for substitution in the range of 20-40% and 15-40% with increments of 5%. Fly ash, ground granulated blast furnace slag, and sodium silicates (Na2SiO3) were used with a constant value of 15%. The bricks were cast and cured at ambient temperature. The study includes testing of mechanical properties of geopolymer bricks as per IS recommendations. To study the macroanalysis, SEM and XRD analyses were also carried out on raw materials and developed composites. The outcomes of this investigation show that the inclusion of 25% of IOT and 30% of slag sand is acceptable as brick material. Springer Nature Singapore Pte Ltd. 2022.
Beulah M.; Pratap Kumar J.; Mohan M.K.; Gopalakrishnan G.; Sudhir M.R.
Handbook of Solid Waste Management: Sustainability through Circular Economy, pp. 1461-1478.
Beulah M., Department of Civil Engineering, CHRIST (Deemed to be University), Bangalore, India; Pratap Kumar J., Department of Civil Engineering, CHRIST (Deemed to be University), Bangalore, India; Mohan M.K., Department of Science and Humanities, CHRIST (Deemed to be University), Bangalore, India; Gopalakrishnan G., Department of Civil Engineering, ACS College of Engineering, Bangalore, India; Sudhir M.R., Department of Civil Engineering, CHRIST (Deemed to be University), Bangalore, India