Sectioned Compaction Self-Assembly of a Geopolymer Mortar
Publication: Journal of Materials in Civil Engineering
Volume 36, Issue 2
Abstract
Geopolymer is a promising candidate for green cement. However, the supply of Class-F fly ash is declining rapidly. This research developed the sectioned compaction self-assembly (S-CSA) technique to produce strong brick-sized geopolymer samples. The fly ash content is only , nearly half the level of conventional geopolymer mortars. The compressive and flexural strengths are comparable to those of typical steel-reinforced concrete. The key S-CSA step is compaction of the premixed materials. The sectioned operation helps to minimize the required force. The material properties are quite uniform and repeatable. These findings are important not only for minimizing the fly ash consumption, but also for reducing the use of alkali activators.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This work was supported by ARPA-E under Grant No. DE-AR0001144. The materials characterization was performed in part at the San Diego Nanotechnology Infrastructure (SDNI) of the University of California San Diego, a member of the National Nanotechnology Coordinated Infrastructure, which is supported by the National Science Foundation (Grant No. ECCS-1542148).
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Published In
Journal of Materials in Civil Engineering
Volume 36 • Issue 2 • February 2024
Copyright
© 2023 American Society of Civil Engineers.
History
Received: May 19, 2023
Accepted: Aug 4, 2023
Published online: Nov 27, 2023
Published in print: Feb 1, 2024
Discussion open until: Apr 27, 2024
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