High volume fly ash mortar containing nano-calcium carbonate as a sustainable cementitious material: microstructure and strength development

The mechanisms underlying the effects of nano-calcium carbonate (NC) on the strength of high volume fly ash (FA) mortar are discussed. Two NCs are used as 2%, 4%, 6%, and 8% by weight of cementitious materials. Hydrated products of fly ash mortar containing NC was investigated using X-ray diffractio...

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Autores principales: Yang, Huashan, Che, Yujun, Leng, Faguang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6219606/
https://www.ncbi.nlm.nih.gov/pubmed/30401939
http://dx.doi.org/10.1038/s41598-018-34851-4
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author Yang, Huashan
Che, Yujun
Leng, Faguang
author_facet Yang, Huashan
Che, Yujun
Leng, Faguang
author_sort Yang, Huashan
collection PubMed
description The mechanisms underlying the effects of nano-calcium carbonate (NC) on the strength of high volume fly ash (FA) mortar are discussed. Two NCs are used as 2%, 4%, 6%, and 8% by weight of cementitious materials. Hydrated products of fly ash mortar containing NC was investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TG) and differential thermal gravity (DTG) analysis. Results indicate that NC could improve strength of FA mortar due to the more rapid growth of hydrated products induced by NC through additional nucleation sites. Corresponding to the highest measured strength of FA mortar, the optimal contents of NC are around 2%. In addition, the presence of 2% NC improved the microstructure of FA mortar after 180 days due to the formation of calcium carbonaluminate hydrate.
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spelling pubmed-62196062018-11-07 High volume fly ash mortar containing nano-calcium carbonate as a sustainable cementitious material: microstructure and strength development Yang, Huashan Che, Yujun Leng, Faguang Sci Rep Article The mechanisms underlying the effects of nano-calcium carbonate (NC) on the strength of high volume fly ash (FA) mortar are discussed. Two NCs are used as 2%, 4%, 6%, and 8% by weight of cementitious materials. Hydrated products of fly ash mortar containing NC was investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TG) and differential thermal gravity (DTG) analysis. Results indicate that NC could improve strength of FA mortar due to the more rapid growth of hydrated products induced by NC through additional nucleation sites. Corresponding to the highest measured strength of FA mortar, the optimal contents of NC are around 2%. In addition, the presence of 2% NC improved the microstructure of FA mortar after 180 days due to the formation of calcium carbonaluminate hydrate. Nature Publishing Group UK 2018-11-06 /pmc/articles/PMC6219606/ /pubmed/30401939 http://dx.doi.org/10.1038/s41598-018-34851-4 Text en © The Author(s) 2018 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
Yang, Huashan
Che, Yujun
Leng, Faguang
High volume fly ash mortar containing nano-calcium carbonate as a sustainable cementitious material: microstructure and strength development
title High volume fly ash mortar containing nano-calcium carbonate as a sustainable cementitious material: microstructure and strength development
title_full High volume fly ash mortar containing nano-calcium carbonate as a sustainable cementitious material: microstructure and strength development
title_fullStr High volume fly ash mortar containing nano-calcium carbonate as a sustainable cementitious material: microstructure and strength development
title_full_unstemmed High volume fly ash mortar containing nano-calcium carbonate as a sustainable cementitious material: microstructure and strength development
title_short High volume fly ash mortar containing nano-calcium carbonate as a sustainable cementitious material: microstructure and strength development
title_sort high volume fly ash mortar containing nano-calcium carbonate as a sustainable cementitious material: microstructure and strength development
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6219606/
https://www.ncbi.nlm.nih.gov/pubmed/30401939
http://dx.doi.org/10.1038/s41598-018-34851-4
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AT cheyujun highvolumeflyashmortarcontainingnanocalciumcarbonateasasustainablecementitiousmaterialmicrostructureandstrengthdevelopment
AT lengfaguang highvolumeflyashmortarcontainingnanocalciumcarbonateasasustainablecementitiousmaterialmicrostructureandstrengthdevelopment

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