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Properties of Chemically Combusted Calcium Carbide Residue and Its Influence on Cement Properties
Calcium carbide residue (CCR) is a waste by-product from acetylene gas production. The main component of CCR is Ca(OH)(2), which can react with siliceous materials through pozzolanic reactions, resulting in a product similar to those obtained from the cement hydration process. Thus, it is possible t...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5455282/ https://www.ncbi.nlm.nih.gov/pubmed/28787963 http://dx.doi.org/10.3390/ma8020638 |
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author | Sun, Hongfang Li, Zishanshan Bai, Jing Ali Memon, Shazim Dong, Biqin Fang, Yuan Xu, Weiting Xing, Feng |
author_facet | Sun, Hongfang Li, Zishanshan Bai, Jing Ali Memon, Shazim Dong, Biqin Fang, Yuan Xu, Weiting Xing, Feng |
author_sort | Sun, Hongfang |
collection | PubMed |
description | Calcium carbide residue (CCR) is a waste by-product from acetylene gas production. The main component of CCR is Ca(OH)(2), which can react with siliceous materials through pozzolanic reactions, resulting in a product similar to those obtained from the cement hydration process. Thus, it is possible to use CCR as a substitute for Portland cement in concrete. In this research, we synthesized CCR and silica fume through a chemical combustion technique to produce a new reactive cementitious powder (RCP). The properties of paste and mortar in fresh and hardened states (setting time, shrinkage, and compressive strength) with 5% cement replacement by RCP were evaluated. The hydration of RCP and OPC (Ordinary Portland Cement) pastes was also examined through SEM (scanning electron microscope). Test results showed that in comparison to control OPC mix, the hydration products for the RCP mix took longer to formulate. The initial and final setting times were prolonged, while the drying shrinkage was significantly reduced. The compressive strength at the age of 45 days for RCP mortar mix was found to be higher than that of OPC mortar and OPC mortar with silica fume mix by 10% and 8%, respectively. Therefore, the synthesized RCP was proved to be a sustainable active cementitious powder for the strength enhanced of building materials, which will result in the diversion of significant quantities of this by-product from landfills. |
format | Online Article Text |
id | pubmed-5455282 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54552822017-07-28 Properties of Chemically Combusted Calcium Carbide Residue and Its Influence on Cement Properties Sun, Hongfang Li, Zishanshan Bai, Jing Ali Memon, Shazim Dong, Biqin Fang, Yuan Xu, Weiting Xing, Feng Materials (Basel) Article Calcium carbide residue (CCR) is a waste by-product from acetylene gas production. The main component of CCR is Ca(OH)(2), which can react with siliceous materials through pozzolanic reactions, resulting in a product similar to those obtained from the cement hydration process. Thus, it is possible to use CCR as a substitute for Portland cement in concrete. In this research, we synthesized CCR and silica fume through a chemical combustion technique to produce a new reactive cementitious powder (RCP). The properties of paste and mortar in fresh and hardened states (setting time, shrinkage, and compressive strength) with 5% cement replacement by RCP were evaluated. The hydration of RCP and OPC (Ordinary Portland Cement) pastes was also examined through SEM (scanning electron microscope). Test results showed that in comparison to control OPC mix, the hydration products for the RCP mix took longer to formulate. The initial and final setting times were prolonged, while the drying shrinkage was significantly reduced. The compressive strength at the age of 45 days for RCP mortar mix was found to be higher than that of OPC mortar and OPC mortar with silica fume mix by 10% and 8%, respectively. Therefore, the synthesized RCP was proved to be a sustainable active cementitious powder for the strength enhanced of building materials, which will result in the diversion of significant quantities of this by-product from landfills. MDPI 2015-02-13 /pmc/articles/PMC5455282/ /pubmed/28787963 http://dx.doi.org/10.3390/ma8020638 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Sun, Hongfang Li, Zishanshan Bai, Jing Ali Memon, Shazim Dong, Biqin Fang, Yuan Xu, Weiting Xing, Feng Properties of Chemically Combusted Calcium Carbide Residue and Its Influence on Cement Properties |
title | Properties of Chemically Combusted Calcium Carbide Residue and Its Influence on Cement Properties |
title_full | Properties of Chemically Combusted Calcium Carbide Residue and Its Influence on Cement Properties |
title_fullStr | Properties of Chemically Combusted Calcium Carbide Residue and Its Influence on Cement Properties |
title_full_unstemmed | Properties of Chemically Combusted Calcium Carbide Residue and Its Influence on Cement Properties |
title_short | Properties of Chemically Combusted Calcium Carbide Residue and Its Influence on Cement Properties |
title_sort | properties of chemically combusted calcium carbide residue and its influence on cement properties |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5455282/ https://www.ncbi.nlm.nih.gov/pubmed/28787963 http://dx.doi.org/10.3390/ma8020638 |
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