Effect of Sand to Fly Ash Ratio on the Hardened Properties of Geopolymer Mortar

This paper presents the progress of research on making Geopolymer mortar using the fly ash obtained from Kolaghat Thermal Power Station, (KTPS), Kolaghat, India. This paper results the report of the experimental study on mechanical property in terms of compressive strength that tested after heat curing in oven by varying fly ash to sand ratio 1:1 to 1:3. Sodium Hydroxide was used as alkali activator in this process. The two main parameters are .Synthesis parameter, i.e. alkali content, sand to fly ash ratio in geopolymer mixture, and Processing parameters i.e. mixing time, curing time, curing temperature to develop the compressive strength was studied. The test results show that, by increasing the sand to fly ash ratio compressive strength decreases. Again this feature was further backed up by typical properties like Water absorption, Sorptivity & Apparent Porosity