Impact of Hard Magnetic Nanocrystals on the Properties of Hardened Cement Paste

authored by: Patrick A. Kißling, Markus Mahlbacher, Christoph Wesemann, Alexander Mundstock, Franziska Lübkemann-Warwas, Stephen Klimke, Franz Renz, Ludger Lohaus, Michael Haist, Nadja C. Bigall
Abstract: In this work, nano-sized hard magnetic gallium-substituted iron oxide crystals, wherein gallium is used to stabilize the metastable epsilon iron oxide phase, were added to cement-water suspensions at different ratios, which were subsequently hydrated for at least 28 days. It is shown that higher contents of such nanocrystals in the hardened cement paste introduce a magnetic moment, whereas the mechanical properties remain unchanged compared to non-blended hardened cement paste for a wide concentration range.
Organisation(s): Institute of Building Materials Science
Institute of Physical Chemistry and Electrochemistry
Institute of Inorganic Chemistry
Inorganic Coordination and Materials Chemistry group
Laboratory of Nano and Quantum Engineering
Type: Article
Journal: Chemie-Ingenieur-Technik
Volume: 96
Pages: 300-308
No. of pages: 9
ISSN: 0009-286X
Publication date: 22.02.2024
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Chemistry, General Chemical Engineering, Industrial and Manufacturing Engineering
Electronic version(s): https://doi.org/10.1002/cite.202300022 (Access: Open)

BibTeX

@article{74fd71c0481a44578b1723baff72649a,
title = "Impact of Hard Magnetic Nanocrystals on the Properties of Hardened Cement Paste",
abstract = "In this work, nano-sized hard magnetic gallium-substituted iron oxide crystals, wherein gallium is used to stabilize the metastable epsilon iron oxide phase, were added to cement-water suspensions at different ratios, which were subsequently hydrated for at least 28 days. It is shown that higher contents of such nanocrystals in the hardened cement paste introduce a magnetic moment, whereas the mechanical properties remain unchanged compared to non-blended hardened cement paste for a wide concentration range.",
keywords = "Analytical methods, Hard magnetic nanocrystals, Hydrated and hardened cement paste, Material science",
author = "Ki{\ss}ling, {Patrick A.} and Markus Mahlbacher and Christoph Wesemann and Alexander Mundstock and Franziska L{\"u}bkemann-Warwas and Stephen Klimke and Franz Renz and Ludger Lohaus and Michael Haist and Bigall, {Nadja C.}",
note = "Funding Information: The authors thank A. Feldhoff for access to PXRD and SEM. The authors thank Heidelberger Cement AG for providing the cement in the DFG SPP 2005 priority program “Opus Fluidum Futurum – Rheology of Reactive, Multiscale, Multiphase Construction Materials” 43. The authors of this study are grateful for the financial support of the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation – projects BI 1708/5-1, HA 7917/3-1, and LO 751/26-1 43) and the German Federal Ministry for Economic Affairs and Energy (BMWi funding code 03ET1557A). Open access funding enabled and organized by Projekt DEAL.",
year = "2024",
month = feb,
day = "22",
doi = "10.1002/cite.202300022",
language = "English",
volume = "96",
pages = "300--308",
journal = "Chemie-Ingenieur-Technik",
issn = "0009-286X",
publisher = "Wiley-VCH Verlag",
number = "3",
}