A study on the effect of nano clay and GGBS on the strength properties of fly ash based geopolymers

Abstract

Abstract The role of reactive alumina and process variables such as sodium content and molarity on alkaline activation of different Nano clay and GGBS are explored. The reactive alumina content of fly ash is the key parameter which determines the maximum compressive strength achieved from the alkaline activation. In this paper, Effects of the incorporation of nano-clay in fly ash based geopolymer binders have been investigated. Low-calcium fly ash was used as the principal source of alumino silicate and it was blended with blast furnace slag in small percentages in order to accelerate the curing at room temperature. Nano-clay was added at different rates to the total binder on the 3, 7 and 28\u202fday of curing.