Effect of Kaolin Addition into Metakaolin Geopolymer Composite
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 1
Abstract
Industrially produced metakaolin may contain raw kaolin residues. Therefore, the aim of this work was to determine the influence of kaolin remains in the metakaolin on the final geopolymer quality. A series of mixtures based on metakaolin (Mefisto L05 by CLUZ Nove Straseci, Czech Republic) was prepared with the 0%–50% by weight gradual addition of raw kaolin, and the mechanical strength of the final geopolymer products was tested. It was found that up to a 20% by weight amount of kaolin in metakaolin does not weaken the geopolymer’s performance. Moreover, a geopolymer made of metakaolin with 2%–4% by weight of kaolin showed slightly better mechanical properties than the geopolymers made from metakaolin itself.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request. This includes all experimental data including data shown in Figs. 1–4.
Acknowledgments
This research did not receive any specific grant from any funding agencies in the public, commercial, or not-for-profit sectors. The raw kaolin and the Mefisto L05 metakaolin were provided by the CLUZ Nove Straseci, Czech Republic. The mechanical tests, structural analysis, and SEM were carried out at the Czech Technical University in Prague.
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Published In
Journal of Materials in Civil Engineering
Volume 33 • Issue 1 • January 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Nov 19, 2019
Accepted: Jun 16, 2020
Published online: Oct 24, 2020
Published in print: Jan 1, 2021
Discussion open until: Mar 24, 2021
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