A simplified geopolymer concrete mix design considering five mineral admixtures.

The mix design procedure for geopolymer concrete has not been standardised as there are so many variables to consider. Industrial wastes primarily fly ash, metakaolin, silica fume, GGBS and rice husk ash were used in this study individually and in combination along with sodium-based alkaline solutions. By taking into account of numerous elements that affect the qualities of geopolymer concrete, 243 geopolymer concrete blends were developed. The percentage of coarse aggregate and combined aggregate, sodium hydroxide to sodium silicate ratio, concentration of NaOH, curing temperature are all the factors taken into account of this study to arrive a mix design procedure for geopolymer concrete. Based on the findings, an approach for determining the mix proportion for geopolymer concrete was derived. These data can be used to produce geopolymer concrete grades ranging from 15 to 80 MPa. [ABSTRACT FROM AUTHOR]