An improved mechanical behaviour of fly ash and GGBS based geopolymer concrete

Abstract

Concrete is high in carbon dioxide emission which produce more heat of hydration. To reduce the heat of hydration as a new generation and also the advanced concrete, we are making the geo polymer concrete which doesn’t have the cement it means of no heat of hydration. In this research we are adding geopolymer concrete is made with fly ash and ground granulated blast furnace slag, with the ground granulated blast furnace slag serving as a partial replacement for the fly ash. The concrete mix is prepared for both normal concrete and geo polymer concrete at M25 grade to each and compared them for suitable construction purpose. The geo polymer concrete is casted in mix ratios of Mix-A (FA50 -GGBS 50), Mix –B (FA25-GGBS75), Mix-C (FA0-GGBS100). The concrete samples were prepared by cube moulds of 150 mm*150 mm*150 mm and tested for compression testing. For the homogeneous normal concrete and geo polymer concrete workability tests were conducted. The test results of compression test have shown a gradual increment of characteristic compressive strength compared to the normal concrete and geo polymer concrete. In all curing periods, it is observed that geo polymer concrete values have higher compressive strength test results. Geopolymers' improved strength can be concluded to be enhanced by an increase in GGBS replacement level.