Abstract
An investigation on the impact of blended combination using Ground granulated blast furnace slag (GGBS) and Metakaolin (MK) in geopolymer mortar was carried out and presented. The geopolymer is a new generation green binding material and it has replacing total cement usage. Sodium silicate and sodium hydroxide were utilized as alkaline activator solutions for the development of geopolymer mortar and maintain the rati between the solutions as 2. The sodium hydroxide solution molarity was maintain as 8M. The GGBS was replaced with MK from 0% to 100% with the increment level of 20%. The strength and acid resistance behaviour of blended geopolymer mortar were investigated under ambient curing condition. The results obtained from this investigation indicated that the 60% replacement of GGBS by MK produced higher compressive strength and lesser absorption behaviour in addition to the higher resistance to the acid attack.
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