Factors affecting properties of high strength geopolymer concrete cured at ambient temperature Online publication date: Fri, 04-Jan-2019
by Aslam Hutagi; R.B. Khadiranaikar
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 13, No. 5, 2018
Abstract: This paper experimentally investigates the factors affecting properties of high strength geopolymer concrete using low calcium fly ash and granulated blast-furnace slag. The aim is to produce high strength geopolymer concrete with ambient curing and to study its properties in the fresh and hardened state. Effect of ground granulated blast-furnace slag, alkaline liquid, water-binder ratio and molarity on workability and strength are studied. Ground granulated blast-furnace slag content is varied from 0% to 40% of the total binder with sodium silicate to sodium hydroxide ratio 2.5. The molarity of the solution was 14 M and 16 M. Activator content 30%, 35% and 40% of total binder. Increases in strength were observed in geopolymer concrete with higher ground granulated blast-furnace slag ratio in the mix. Fly ash is replaced by 40% ground granulated blast-furnace slag to achieve compressive strength of 77 MPa.
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