Experimental study on metakolin and baggashe ash based geopolymer concrete

Abstract

In this experimental study, the bagasse ash and metakaolin is used to develop the geopolymer concrete. The fly ash based geopolymer concrete was prepared with bagasse ash and metakaolin which were used to replace fly ash at different percentages i.e., 10%, 20%, 30%, and 40% to study the microstructure, mechanical and durability properties. Geopolymer Concrete was prepared with the use of alkaline solutions NaOH and Na2Sio3. Geopolymer concrete samples for bagasse ash and metakaolin based were cured at oven for 24 h at 90˚C and then kept under room temperature for curing. Metakaolin contained geopolymer concrete has shown better mechanical and durability properties as compared with bagasse ash contained geopolymer concrete. Geopolymer concrete is raw material based concrete that leads to the usage of materials which are produced as a raw material from industries and when these raw materials were induced in the geopolymer preparation it leads to the reduction of carbon emissions and acts as a greener concrete towards environment. Microstructure studies concluded that the metakaolin contained geopolymer concrete has denser intermolecular bonding of materials as compared to the bagasse ash contained geopolymer due to which metakaolin shows better results in mechanical and durability properties when compared with bagasseash.