Evaluation of Geopolymer properties with temperature imposed on activator prior mixing with fly ash

The present experiment has been performed to assess the impact of temperatures on activator before mixing. In this program, a set of activators havin§ 8% of Na20 by weight of fly ash were subjected to different temperatures ranging from 15 C to 90°C, for a period of 24 hours and 48 hours. The performances of geopolymer were investigated on the basis of workability and strength. Scanning Electron Microscope (SEM) along with EDAX was also conducted to predict microstructural and mineralogical changes. Geopolymer paste prepared with the activator, which was subjected to a temperature 45°C for duration of 48 hours, showed mechanical property.