Compressive Strength of Mortar with Alkali Activated Fly ash and Ground Granulated Blast Furnace Slag

Abstract

The geopolymer concrete is a new technology that replace ordinary cement concrete with cement less concrete using the different industrial by-products considered as waste to the society. These materials create a hazardous environmental condition. To overcome the same, many researchers have reported replacement of these materials with cement in concrete work. These materials do not possess much binding properties. Hence, an alkaline solution is utilized to activate the same. In the present study, the compressive strength of the geopolymer mortar prepared with Class F fly ash and ground granulated blast furnace slag in different ratios are examined. It is observed that the compressive strength achieved from elevated temperature cured samples is higher than the ambient temperature cured sample. Increase in ground granulated blast furnace slag content also increases the compressive strength parameters of the geopolymer mortar sample.