Recycling Off-Specification Fly Ash for Producing Strain-Hardening Cementitious Composites
Publication: Journal of Materials in Civil Engineering
Volume 36, Issue 1
Abstract
This paper investigates the viability and advantages of incorporating off-specification fly ash (OSFA) into the production of strain-hardening cementitious composites (SHCC). Influences of variables in mix design on key properties of SHCC were experimentally investigated. The underlying mechanisms were explored by means of analysis on hydration kinetics and hydration products. The results show SHCC mixture incorporating OSFA achieved high mechanical properties such as crack resistance, ductility, and controlled crack width, as well as economic benefits, lower carbon footprint and embodied energy, and low leachability of heavy metals. This research demonstrates a synergistic way to utilize OSFA and produce SHCC.
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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 research was partially funded by the National Science Foundation (Award No. CMMI 2046407).
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Published In
Journal of Materials in Civil Engineering
Volume 36 • Issue 1 • January 2024
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Nov 3, 2022
Accepted: Jun 29, 2023
Published online: Nov 2, 2023
Published in print: Jan 1, 2024
Discussion open until: Apr 2, 2024
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