Applying X-ray Microtomography to Study Microbial-Induced Self-Healing of Geopolymers

Geopolymers are one of the emerging sustainable materials for the building and construction industry. They are inorganic polymers produced from aluminosilicate waste materials such as coal fly ash and have been shown to have a lower carbon footprint as compared with Portland cement. However, geopoly...

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Autores principales:	Jadin Zam S. Doctolero, Arnel B. Beltran, Gian Paolo O. Bernardo, Michael Angelo B. Promentilla
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/f92b516b1b824799b9fa6d78bf8d4cb9
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spelling	oai:doaj.org-article:f92b516b1b824799b9fa6d78bf8d4cb92021-11-15T21:47:43ZApplying X-ray Microtomography to Study Microbial-Induced Self-Healing of Geopolymers10.3303/CET21881292283-9216https://doaj.org/article/f92b516b1b824799b9fa6d78bf8d4cb92021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11922https://doaj.org/toc/2283-9216Geopolymers are one of the emerging sustainable materials for the building and construction industry. They are inorganic polymers produced from aluminosilicate waste materials such as coal fly ash and have been shown to have a lower carbon footprint as compared with Portland cement. However, geopolymers are a cementitious material like Portland cement-based concrete and are thus brittle and prone to develop cracks. The use of microorganisms has recently been considered as an approach to improve the self-healing capability of geopolymers through microbial-induced calcite precipitation. The application of X-ray microtomography to observe the potential of self-healing of bio-geopolymers is explored in this study. Bio-geopolymers were produced from the alkali activation of coal fly ash and mixed with self-healing agents using a form of biochar-immobilized spores of B. sphaericus and B. thuringiensis. These bio-geopolymers were then scanned using micro-focus XCT to obtain a visualization of the microstructure of the material via a non-destructive 3D imaging technique after self-healing. Coupled with image analysis, quantification of the segmented data allowed further investigation of self-healing through comparison with the other self-healing characterization method.Jadin Zam S. DoctoleroArnel B. BeltranGian Paolo O. BernardoMichael Angelo B. PromentillaAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Jadin Zam S. Doctolero Arnel B. Beltran Gian Paolo O. Bernardo Michael Angelo B. Promentilla Applying X-ray Microtomography to Study Microbial-Induced Self-Healing of Geopolymers
description	Geopolymers are one of the emerging sustainable materials for the building and construction industry. They are inorganic polymers produced from aluminosilicate waste materials such as coal fly ash and have been shown to have a lower carbon footprint as compared with Portland cement. However, geopolymers are a cementitious material like Portland cement-based concrete and are thus brittle and prone to develop cracks. The use of microorganisms has recently been considered as an approach to improve the self-healing capability of geopolymers through microbial-induced calcite precipitation. The application of X-ray microtomography to observe the potential of self-healing of bio-geopolymers is explored in this study. Bio-geopolymers were produced from the alkali activation of coal fly ash and mixed with self-healing agents using a form of biochar-immobilized spores of B. sphaericus and B. thuringiensis. These bio-geopolymers were then scanned using micro-focus XCT to obtain a visualization of the microstructure of the material via a non-destructive 3D imaging technique after self-healing. Coupled with image analysis, quantification of the segmented data allowed further investigation of self-healing through comparison with the other self-healing characterization method.
format	article
author	Jadin Zam S. Doctolero Arnel B. Beltran Gian Paolo O. Bernardo Michael Angelo B. Promentilla
author_facet	Jadin Zam S. Doctolero Arnel B. Beltran Gian Paolo O. Bernardo Michael Angelo B. Promentilla
author_sort	Jadin Zam S. Doctolero
title	Applying X-ray Microtomography to Study Microbial-Induced Self-Healing of Geopolymers
title_short	Applying X-ray Microtomography to Study Microbial-Induced Self-Healing of Geopolymers
title_full	Applying X-ray Microtomography to Study Microbial-Induced Self-Healing of Geopolymers
title_fullStr	Applying X-ray Microtomography to Study Microbial-Induced Self-Healing of Geopolymers
title_full_unstemmed	Applying X-ray Microtomography to Study Microbial-Induced Self-Healing of Geopolymers
title_sort	applying x-ray microtomography to study microbial-induced self-healing of geopolymers
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/f92b516b1b824799b9fa6d78bf8d4cb9
work_keys_str_mv	AT jadinzamsdoctolero applyingxraymicrotomographytostudymicrobialinducedselfhealingofgeopolymers AT arnelbbeltran applyingxraymicrotomographytostudymicrobialinducedselfhealingofgeopolymers AT gianpaoloobernardo applyingxraymicrotomographytostudymicrobialinducedselfhealingofgeopolymers AT michaelangelobpromentilla applyingxraymicrotomographytostudymicrobialinducedselfhealingofgeopolymers
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Applying X-ray Microtomography to Study Microbial-Induced Self-Healing of Geopolymers

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