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Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review
Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications. Producing concrete with coal gangue aggregate is one of the green sustainable development requirements. This paper reviews the properties and preparation methods of Chinese gangue aggregate, studi...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9267344/ https://www.ncbi.nlm.nih.gov/pubmed/35806620 http://dx.doi.org/10.3390/ma15134495 |
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author | Hao, Ying Guo, Xiaoning Yao, Xianhua Han, Ruicong Li, Lielie Zhang, Min |
author_facet | Hao, Ying Guo, Xiaoning Yao, Xianhua Han, Ruicong Li, Lielie Zhang, Min |
author_sort | Hao, Ying |
collection | PubMed |
description | Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications. Producing concrete with coal gangue aggregate is one of the green sustainable development requirements. This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue aggregate on concrete properties and the prediction model of gangue concrete, and summarizes the influence of modified materials on gangue concrete. The studies analyzed in this review show that different treatments influence the performance of coal gangue aggregate concrete. With the increase in the replacement ratio of coal gangue aggregate in concrete, the concrete workability and mechanical performance are reduced. Furthermore, the pore structure changes lead to decreased porosity, greatly affecting the durability. Coal gangue is not recommended for producing high-grade concretes. Nevertheless, pore structure can be improved by adding mineral admixtures, fibers, and admixtures to the coal gangue concrete. Hence, the working properties, mechanical properties, and durability of the concrete can be improved effectively, ensuring that coal gangue concrete meets engineering design requirements. Adding modified materials to coal gangue concrete is a viable future development direction. |
format | Online Article Text |
id | pubmed-9267344 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92673442022-07-09 Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review Hao, Ying Guo, Xiaoning Yao, Xianhua Han, Ruicong Li, Lielie Zhang, Min Materials (Basel) Review Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications. Producing concrete with coal gangue aggregate is one of the green sustainable development requirements. This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue aggregate on concrete properties and the prediction model of gangue concrete, and summarizes the influence of modified materials on gangue concrete. The studies analyzed in this review show that different treatments influence the performance of coal gangue aggregate concrete. With the increase in the replacement ratio of coal gangue aggregate in concrete, the concrete workability and mechanical performance are reduced. Furthermore, the pore structure changes lead to decreased porosity, greatly affecting the durability. Coal gangue is not recommended for producing high-grade concretes. Nevertheless, pore structure can be improved by adding mineral admixtures, fibers, and admixtures to the coal gangue concrete. Hence, the working properties, mechanical properties, and durability of the concrete can be improved effectively, ensuring that coal gangue concrete meets engineering design requirements. Adding modified materials to coal gangue concrete is a viable future development direction. MDPI 2022-06-26 /pmc/articles/PMC9267344/ /pubmed/35806620 http://dx.doi.org/10.3390/ma15134495 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 | Review Hao, Ying Guo, Xiaoning Yao, Xianhua Han, Ruicong Li, Lielie Zhang, Min Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review |
title | Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review |
title_full | Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review |
title_fullStr | Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review |
title_full_unstemmed | Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review |
title_short | Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review |
title_sort | using chinese coal gangue as an ecological aggregate and its modification: a review |
topic | Review |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9267344/ https://www.ncbi.nlm.nih.gov/pubmed/35806620 http://dx.doi.org/10.3390/ma15134495 |
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