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Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite

Mechanochemistry offers an environmentally benign and facile synthesis method for a variety of cement paste constituents. In addition, these methods can be used to selectively tune the properties of cement components. The mineral ettringite is an important component of cementitious materials and has...

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Autores principales: Stroh, Julia, Feiler, Torvid, Zafar Ali, Naveed, Minas da Piedade, Manuel E., Emmerling, Franziska
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6652108/
https://www.ncbi.nlm.nih.gov/pubmed/31367509
http://dx.doi.org/10.1002/open.201900215
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author Stroh, Julia
Feiler, Torvid
Zafar Ali, Naveed
Minas da Piedade, Manuel E.
Emmerling, Franziska
author_facet Stroh, Julia
Feiler, Torvid
Zafar Ali, Naveed
Minas da Piedade, Manuel E.
Emmerling, Franziska
author_sort Stroh, Julia
collection PubMed
description Mechanochemistry offers an environmentally benign and facile synthesis method for a variety of cement paste constituents. In addition, these methods can be used to selectively tune the properties of cement components. The mineral ettringite is an important component of cementitious materials and has additional technological potential due to its ion exchange properties. Synthesis of ettringite via mechanochemistry is an environmentally friendly alternative to conventional wet‐chemical synthesis established in industry. This contribution explores the mechanism of a two‐step mechanochemical synthesis of ettringite, which was previously found to greatly improve the reaction conversion as compared with one‐pot synthesis. The crystallinity of Al(OH)(3) was found to decrease during the first stage of this mechanochemical synthesis. This was correlated to a significant decrease in the particle size of Al(OH)(3) in this stage. No other significant changes were found for the other components, suggesting that mechanochemical activation of Al(OH)(3) is responsible for the enhanced formation of ettringite by the two‐step approach. The environmentally friendly approach developed for ettringite synthesis offers a versatile synthetic strategy, which can be applied to synthesise further cementitious materials.
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spelling pubmed-66521082019-07-31 Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite Stroh, Julia Feiler, Torvid Zafar Ali, Naveed Minas da Piedade, Manuel E. Emmerling, Franziska ChemistryOpen Full Papers Mechanochemistry offers an environmentally benign and facile synthesis method for a variety of cement paste constituents. In addition, these methods can be used to selectively tune the properties of cement components. The mineral ettringite is an important component of cementitious materials and has additional technological potential due to its ion exchange properties. Synthesis of ettringite via mechanochemistry is an environmentally friendly alternative to conventional wet‐chemical synthesis established in industry. This contribution explores the mechanism of a two‐step mechanochemical synthesis of ettringite, which was previously found to greatly improve the reaction conversion as compared with one‐pot synthesis. The crystallinity of Al(OH)(3) was found to decrease during the first stage of this mechanochemical synthesis. This was correlated to a significant decrease in the particle size of Al(OH)(3) in this stage. No other significant changes were found for the other components, suggesting that mechanochemical activation of Al(OH)(3) is responsible for the enhanced formation of ettringite by the two‐step approach. The environmentally friendly approach developed for ettringite synthesis offers a versatile synthetic strategy, which can be applied to synthesise further cementitious materials. John Wiley and Sons Inc. 2019-07-24 /pmc/articles/PMC6652108/ /pubmed/31367509 http://dx.doi.org/10.1002/open.201900215 Text en © 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Full Papers
Stroh, Julia
Feiler, Torvid
Zafar Ali, Naveed
Minas da Piedade, Manuel E.
Emmerling, Franziska
Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite
title Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite
title_full Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite
title_fullStr Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite
title_full_unstemmed Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite
title_short Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite
title_sort mechanistic insights into a sustainable mechanochemical synthesis of ettringite
topic Full Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6652108/
https://www.ncbi.nlm.nih.gov/pubmed/31367509
http://dx.doi.org/10.1002/open.201900215
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