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Study on the durability and microstructure of geopolymer concrete with ferrochrome slag and silica fume

Study on the durability and microstructure of geopolymer concrete with ferrochrome slag and... This paper aims to investigate the effect of ferrochrome slag and silica fume in fly ash geopolymer concrete (GPC) exposed to acid, sulphate and chloride attack. Binder of this geopolymer concrete was fly ash activated with alkaline activators (Na2SiO3 and NaOH). GPC mixes were produced by mixing fly ash, river sand and crushed granite stone aggregates. Ferrochrome slag (FS) and silica fume (SF) was replaced natural coarse aggregate and fly ash respectively. The GPC specimens were immersed in magnesium sulphate (3%), sulphuric acid (3%) and sodium chloride (5%) solution for 28, 56 and 90 days. The compressive strength and weight loss were investigated. Sorptivity was studied with a regular interval of time. Rapid chloride permeability test was carried out to determine the current passed through the GPC specimens. Scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier transformed infrared spectroscopy (FTIR) analysis was carried out for the microstructural properties. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Structural Engineering Inderscience Publishers

Study on the durability and microstructure of geopolymer concrete with ferrochrome slag and silica fume

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Publisher
Inderscience Publishers
Copyright
Copyright © Inderscience Enterprises Ltd
ISSN
1758-7328
eISSN
1758-7336
DOI
10.1504/ijstructe.2022.123745
Publisher site
See Article on Publisher Site

Abstract

This paper aims to investigate the effect of ferrochrome slag and silica fume in fly ash geopolymer concrete (GPC) exposed to acid, sulphate and chloride attack. Binder of this geopolymer concrete was fly ash activated with alkaline activators (Na2SiO3 and NaOH). GPC mixes were produced by mixing fly ash, river sand and crushed granite stone aggregates. Ferrochrome slag (FS) and silica fume (SF) was replaced natural coarse aggregate and fly ash respectively. The GPC specimens were immersed in magnesium sulphate (3%), sulphuric acid (3%) and sodium chloride (5%) solution for 28, 56 and 90 days. The compressive strength and weight loss were investigated. Sorptivity was studied with a regular interval of time. Rapid chloride permeability test was carried out to determine the current passed through the GPC specimens. Scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier transformed infrared spectroscopy (FTIR) analysis was carried out for the microstructural properties.

Journal

International Journal of Structural EngineeringInderscience Publishers

Published: Jan 1, 2022

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