Effect of water-to-binder (W/B) ratio and various zones of river sand on properties of geopolymer concrete

Abstract

“Global warming” is the most important phrase of this century. As a result, reducing greenhouse gas emissions is a challenging task, and there is an urgent need for sustainable construction materials that utilize less natural resources and contribute to reducing greenhouse gas emissions. The current work suggests that fly ash can be a substitute to the cement as a binding agent when alkaline solutions like NaOH and Na2SiO3 are added. The slump cone test was utilized in order to determine how easily geopolymer concrete could be worked. For the purpose of evaluating compressive strength after a predetermined amount of time spent in an oven heated to 90°Celsius, cubes measuring 15 cm X 15 cm X 15 cm were cast from samples with different W/B (water to binder) ratios ranging from 0.30 to 0.50 and different zones of river sands. So, the purpose of the research is to find out the effect of water-to-geopolymer binder (W/B) ratio and effect of different zones of natural sand on properties of Geopolymer concrete like workability and compressive strength of GPC concrete.