Title: Factors affecting properties of high strength geopolymer concrete cured at ambient temperature

Authors: Aslam Hutagi; R.B. Khadiranaikar

Addresses: Department of Civil Engineering, Basaveshwar Engineering College Bagalkot, Karnataka 587102, India ' Department of Civil Engineering, Basaveshwar Engineering College Bagalkot, Karnataka 587102, India

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.

Keywords: high strength; geopolymer concrete; GGBFS; water-binder ratio; molarity.

DOI: 10.1504/IJMMP.2018.097214

International Journal of Microstructure and Materials Properties, 2018 Vol.13 No.5, pp.277 - 294

Received: 09 Jan 2018
Accepted: 29 May 2018
Published online: 04 Jan 2019 *

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