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Mechanical and durability analysis of geopolymer concrete incorporating bauxite residue, phosphogypsum, and ground granulated blast slag

Mechanical and durability analysis of geopolymer concrete incorporating bauxite residue,... One cementitious material is geopolymer concrete (GPC), which is produced by activating industrial by-products with alkaline activators. This study evaluates the mechanical and environmental properties of geopolymer concrete incorporating bauxite residue (BR) with phosphogypsum (PG) and ground granulated blast slag (GGBS). The compressive strength of GPC was 58.42 MPa at 28 days when BR was replaced with 10% PG and 30% GGBS. This indicates that the incorporation of PG and GGBS improved the strength development of GPC. The lowest charges passed, porosity, and water absorption of 1575 Coulombs, 7.53%, and 3.15%, respectively, were obtained when the bauxite residue was replaced with 10% phosphogypsum and 30% GGBS (B4). The scanning electron microscope (SEM) image shows that the 10% PG and 30% GGBS specimens exhibit a denser structure than the other specimens. This indicates that the PG and GGBS proportion has a substantial impact on the structure and strength of the GPC. These findings suggest that geopolymer concrete can be a promising alternative construction material that can contribute to sustainable development. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Asian Journal of Civil Engineering Springer Journals

Mechanical and durability analysis of geopolymer concrete incorporating bauxite residue, phosphogypsum, and ground granulated blast slag

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References (53)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
1563-0854
eISSN
2522-011X
DOI
10.1007/s42107-023-00777-0
Publisher site
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Abstract

One cementitious material is geopolymer concrete (GPC), which is produced by activating industrial by-products with alkaline activators. This study evaluates the mechanical and environmental properties of geopolymer concrete incorporating bauxite residue (BR) with phosphogypsum (PG) and ground granulated blast slag (GGBS). The compressive strength of GPC was 58.42 MPa at 28 days when BR was replaced with 10% PG and 30% GGBS. This indicates that the incorporation of PG and GGBS improved the strength development of GPC. The lowest charges passed, porosity, and water absorption of 1575 Coulombs, 7.53%, and 3.15%, respectively, were obtained when the bauxite residue was replaced with 10% phosphogypsum and 30% GGBS (B4). The scanning electron microscope (SEM) image shows that the 10% PG and 30% GGBS specimens exhibit a denser structure than the other specimens. This indicates that the PG and GGBS proportion has a substantial impact on the structure and strength of the GPC. These findings suggest that geopolymer concrete can be a promising alternative construction material that can contribute to sustainable development.

Journal

Asian Journal of Civil Engineering – Springer Journals

Published: Jun 25, 2023

Keywords: Geopolymer; Industrial by-products; Compressive strength; Durability; SEM

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