Influence of Bentonite on Mechanical and Durability Properties of High-Calcium Fly Ash Geopolymer Concrete with Natural and Recycled Aggregates

In this study, bentonite (a naturally occurring pozzolana) was incorporated as a partial replacement (up to 20%) for high-calcium fly ash (HCFA)-based geopolymeric natural aggregate concrete (GNAC) and geopolymeric recycled aggregate concrete (GRAC). The mechanical (compressive strength and splittin...

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Autores principales: Waqas, Rana Muhammad, Butt, Faheem, Danish, Aamar, Alqurashi, Muwaffaq, Mosaberpanah, Mohammad Ali, Masood, Bilal, Hussein, Enas E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8708117/
https://www.ncbi.nlm.nih.gov/pubmed/34947401
http://dx.doi.org/10.3390/ma14247790
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author Waqas, Rana Muhammad
Butt, Faheem
Danish, Aamar
Alqurashi, Muwaffaq
Mosaberpanah, Mohammad Ali
Masood, Bilal
Hussein, Enas E.
author_facet Waqas, Rana Muhammad
Butt, Faheem
Danish, Aamar
Alqurashi, Muwaffaq
Mosaberpanah, Mohammad Ali
Masood, Bilal
Hussein, Enas E.
author_sort Waqas, Rana Muhammad
collection PubMed
description In this study, bentonite (a naturally occurring pozzolana) was incorporated as a partial replacement (up to 20%) for high-calcium fly ash (HCFA)-based geopolymeric natural aggregate concrete (GNAC) and geopolymeric recycled aggregate concrete (GRAC). The mechanical (compressive strength and splitting tensile strength), durability (chloride migration coefficient, water absorption, and acid attack resistance), and rheological properties (slump test, fresh density, and workability) were investigated. The results revealed that incorporation of bentonite (10 wt % with ordinary Portland cement) showed appreciable improvement in the strength and durability of both the GNAC and GRAC, though its effect is more significant for GRAC than the GNAC.
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spelling pubmed-87081172021-12-25 Influence of Bentonite on Mechanical and Durability Properties of High-Calcium Fly Ash Geopolymer Concrete with Natural and Recycled Aggregates Waqas, Rana Muhammad Butt, Faheem Danish, Aamar Alqurashi, Muwaffaq Mosaberpanah, Mohammad Ali Masood, Bilal Hussein, Enas E. Materials (Basel) Article In this study, bentonite (a naturally occurring pozzolana) was incorporated as a partial replacement (up to 20%) for high-calcium fly ash (HCFA)-based geopolymeric natural aggregate concrete (GNAC) and geopolymeric recycled aggregate concrete (GRAC). The mechanical (compressive strength and splitting tensile strength), durability (chloride migration coefficient, water absorption, and acid attack resistance), and rheological properties (slump test, fresh density, and workability) were investigated. The results revealed that incorporation of bentonite (10 wt % with ordinary Portland cement) showed appreciable improvement in the strength and durability of both the GNAC and GRAC, though its effect is more significant for GRAC than the GNAC. MDPI 2021-12-16 /pmc/articles/PMC8708117/ /pubmed/34947401 http://dx.doi.org/10.3390/ma14247790 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Waqas, Rana Muhammad
Butt, Faheem
Danish, Aamar
Alqurashi, Muwaffaq
Mosaberpanah, Mohammad Ali
Masood, Bilal
Hussein, Enas E.
Influence of Bentonite on Mechanical and Durability Properties of High-Calcium Fly Ash Geopolymer Concrete with Natural and Recycled Aggregates
title Influence of Bentonite on Mechanical and Durability Properties of High-Calcium Fly Ash Geopolymer Concrete with Natural and Recycled Aggregates
title_full Influence of Bentonite on Mechanical and Durability Properties of High-Calcium Fly Ash Geopolymer Concrete with Natural and Recycled Aggregates
title_fullStr Influence of Bentonite on Mechanical and Durability Properties of High-Calcium Fly Ash Geopolymer Concrete with Natural and Recycled Aggregates
title_full_unstemmed Influence of Bentonite on Mechanical and Durability Properties of High-Calcium Fly Ash Geopolymer Concrete with Natural and Recycled Aggregates
title_short Influence of Bentonite on Mechanical and Durability Properties of High-Calcium Fly Ash Geopolymer Concrete with Natural and Recycled Aggregates
title_sort influence of bentonite on mechanical and durability properties of high-calcium fly ash geopolymer concrete with natural and recycled aggregates
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8708117/
https://www.ncbi.nlm.nih.gov/pubmed/34947401
http://dx.doi.org/10.3390/ma14247790
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