Screening of Fungi for Potential Application of Self-Healing Concrete

Concrete is susceptible to cracking owing to drying shrinkage, freeze-thaw cycles, delayed ettringite formation, reinforcement corrosion, creep and fatigue, etc. Continuous inspection and maintenance of concrete infrastructure require onerous labor and high costs. If the damaging cracks can heal by...

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Autores principales: Menon, Rakenth R., Luo, Jing, Chen, Xiaobo, Zhou, Hui, Liu, Zhiyong, Zhou, Guangwen, Zhang, Ning, Jin, Congrui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6375922/
https://www.ncbi.nlm.nih.gov/pubmed/30765831
http://dx.doi.org/10.1038/s41598-019-39156-8
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author Menon, Rakenth R.
Luo, Jing
Chen, Xiaobo
Zhou, Hui
Liu, Zhiyong
Zhou, Guangwen
Zhang, Ning
Jin, Congrui
author_facet Menon, Rakenth R.
Luo, Jing
Chen, Xiaobo
Zhou, Hui
Liu, Zhiyong
Zhou, Guangwen
Zhang, Ning
Jin, Congrui
author_sort Menon, Rakenth R.
collection PubMed
description Concrete is susceptible to cracking owing to drying shrinkage, freeze-thaw cycles, delayed ettringite formation, reinforcement corrosion, creep and fatigue, etc. Continuous inspection and maintenance of concrete infrastructure require onerous labor and high costs. If the damaging cracks can heal by themselves without any human interference or intervention, that could be of great attraction. In this study, a novel self-healing approach is investigated, in which fungi are applied to heal cracks in concrete by promoting calcium carbonate precipitation. The goal of this investigation is to discover the most appropriate species of fungi for the application of biogenic crack repair. Our results showed that, despite the significant pH increase owing to the leaching of calcium hydroxide from concrete, Aspergillus nidulans (MAD1445), a pH regulatory mutant, could grow on concrete plates and promote calcium carbonate precipitation.
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spelling pubmed-63759222019-02-19 Screening of Fungi for Potential Application of Self-Healing Concrete Menon, Rakenth R. Luo, Jing Chen, Xiaobo Zhou, Hui Liu, Zhiyong Zhou, Guangwen Zhang, Ning Jin, Congrui Sci Rep Article Concrete is susceptible to cracking owing to drying shrinkage, freeze-thaw cycles, delayed ettringite formation, reinforcement corrosion, creep and fatigue, etc. Continuous inspection and maintenance of concrete infrastructure require onerous labor and high costs. If the damaging cracks can heal by themselves without any human interference or intervention, that could be of great attraction. In this study, a novel self-healing approach is investigated, in which fungi are applied to heal cracks in concrete by promoting calcium carbonate precipitation. The goal of this investigation is to discover the most appropriate species of fungi for the application of biogenic crack repair. Our results showed that, despite the significant pH increase owing to the leaching of calcium hydroxide from concrete, Aspergillus nidulans (MAD1445), a pH regulatory mutant, could grow on concrete plates and promote calcium carbonate precipitation. Nature Publishing Group UK 2019-02-14 /pmc/articles/PMC6375922/ /pubmed/30765831 http://dx.doi.org/10.1038/s41598-019-39156-8 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Menon, Rakenth R.
Luo, Jing
Chen, Xiaobo
Zhou, Hui
Liu, Zhiyong
Zhou, Guangwen
Zhang, Ning
Jin, Congrui
Screening of Fungi for Potential Application of Self-Healing Concrete
title Screening of Fungi for Potential Application of Self-Healing Concrete
title_full Screening of Fungi for Potential Application of Self-Healing Concrete
title_fullStr Screening of Fungi for Potential Application of Self-Healing Concrete
title_full_unstemmed Screening of Fungi for Potential Application of Self-Healing Concrete
title_short Screening of Fungi for Potential Application of Self-Healing Concrete
title_sort screening of fungi for potential application of self-healing concrete
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6375922/
https://www.ncbi.nlm.nih.gov/pubmed/30765831
http://dx.doi.org/10.1038/s41598-019-39156-8
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