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Influence of Sugarcane Bagasse Ash and Silica Fume on the Mechanical and Durability Properties of Concrete

Cement production is environmentally unsustainable due to the high anthropogenic carbon emissions produced. Supplementary cementitious materials (SCMs), derived from the by-products of different industries, have been deemed an effective way to reduce carbon emissions. The reduction in carbon emissio...

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Autores principales: Farrant, William Earl, Babafemi, Adewumi John, Kolawole, John Temitope, Panda, Biranchi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9104177/
https://www.ncbi.nlm.nih.gov/pubmed/35591351
http://dx.doi.org/10.3390/ma15093018
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author Farrant, William Earl
Babafemi, Adewumi John
Kolawole, John Temitope
Panda, Biranchi
author_facet Farrant, William Earl
Babafemi, Adewumi John
Kolawole, John Temitope
Panda, Biranchi
author_sort Farrant, William Earl
collection PubMed
description Cement production is environmentally unsustainable due to the high anthropogenic carbon emissions produced. Supplementary cementitious materials (SCMs), derived from the by-products of different industries, have been deemed an effective way to reduce carbon emissions. The reduction in carbon emissions is achieved by lowering the clinker factor of cement, through a partial replacement with an SCM. Sugarcane Bagasse Ash (SCBA) is produced as an agricultural waste from the sugarcane industry and has gained a lot of attention for being a feasible and readily available pozzolanic material, underutilised as an SCM. This study evaluates alkali-activated sugarcane bagasse ash’s mechanical and durability performance, at varied contents, in binary blended cement concrete and ternary blended cement concrete containing silica fume (SF). Potassium Hydroxide (KOH), used as the alkali activator, is intended to enhance the reactivity of the ash, with the possibility of a high-volume SCBA content. The mechanical performance was investigated by compressive and split tensile strength tests, and durability performance was investigated using the Oxygen Permeability Index (OPI) test. In addition, a micro-CT porosity test was conducted to assess how the microstructure and porosity of the concrete affect the mechanical and durability performance. The results indicated that using SCBA in a ternary blend with SF can significantly improve the overall performance and create less porous concrete. At 30% SCBA and 10% SF replacement, the performance tests revealed the highest mechanical strength and the lowest permeability, outperforming the control concrete and the binary blended cement concrete containing only SCBA.
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spelling pubmed-91041772022-05-14 Influence of Sugarcane Bagasse Ash and Silica Fume on the Mechanical and Durability Properties of Concrete Farrant, William Earl Babafemi, Adewumi John Kolawole, John Temitope Panda, Biranchi Materials (Basel) Article Cement production is environmentally unsustainable due to the high anthropogenic carbon emissions produced. Supplementary cementitious materials (SCMs), derived from the by-products of different industries, have been deemed an effective way to reduce carbon emissions. The reduction in carbon emissions is achieved by lowering the clinker factor of cement, through a partial replacement with an SCM. Sugarcane Bagasse Ash (SCBA) is produced as an agricultural waste from the sugarcane industry and has gained a lot of attention for being a feasible and readily available pozzolanic material, underutilised as an SCM. This study evaluates alkali-activated sugarcane bagasse ash’s mechanical and durability performance, at varied contents, in binary blended cement concrete and ternary blended cement concrete containing silica fume (SF). Potassium Hydroxide (KOH), used as the alkali activator, is intended to enhance the reactivity of the ash, with the possibility of a high-volume SCBA content. The mechanical performance was investigated by compressive and split tensile strength tests, and durability performance was investigated using the Oxygen Permeability Index (OPI) test. In addition, a micro-CT porosity test was conducted to assess how the microstructure and porosity of the concrete affect the mechanical and durability performance. The results indicated that using SCBA in a ternary blend with SF can significantly improve the overall performance and create less porous concrete. At 30% SCBA and 10% SF replacement, the performance tests revealed the highest mechanical strength and the lowest permeability, outperforming the control concrete and the binary blended cement concrete containing only SCBA. MDPI 2022-04-21 /pmc/articles/PMC9104177/ /pubmed/35591351 http://dx.doi.org/10.3390/ma15093018 Text en © 2022 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
Farrant, William Earl
Babafemi, Adewumi John
Kolawole, John Temitope
Panda, Biranchi
Influence of Sugarcane Bagasse Ash and Silica Fume on the Mechanical and Durability Properties of Concrete
title Influence of Sugarcane Bagasse Ash and Silica Fume on the Mechanical and Durability Properties of Concrete
title_full Influence of Sugarcane Bagasse Ash and Silica Fume on the Mechanical and Durability Properties of Concrete
title_fullStr Influence of Sugarcane Bagasse Ash and Silica Fume on the Mechanical and Durability Properties of Concrete
title_full_unstemmed Influence of Sugarcane Bagasse Ash and Silica Fume on the Mechanical and Durability Properties of Concrete
title_short Influence of Sugarcane Bagasse Ash and Silica Fume on the Mechanical and Durability Properties of Concrete
title_sort influence of sugarcane bagasse ash and silica fume on the mechanical and durability properties of concrete
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9104177/
https://www.ncbi.nlm.nih.gov/pubmed/35591351
http://dx.doi.org/10.3390/ma15093018
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