Mineralogical and microstructural characterization of biomass ash binder
Name
BrickPaper_CCC_PDF.pdf
Description
Accepted version
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906.69 KB
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Checksum (MD5)
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Author(s)
Chaunsali, Piyush
Uvegi, Hugo
Osmundsen, Rachel
Laracy, Michael Edward
Poinot, Thomas
Ochsendorf, John A
Olivetti, Elsa A.
Date Issued
February 2018
Journal
Cement and Concrete Composites
Publisher
Elsevier BV
Citation
Chaunsali, Piyush et al., "Mineralogical and microstructural characterization of biomass ash binder." Cement and Concrete Composites 89 (May 2018): 41-51 © 2018 Elsevier Ltd
Version
Author's final manuscript
Abstract
While the incineration of biomass residues is gaining traction as a globally available source of renewable energy, the resulting ash is often landfilled, resulting in the disposal of what could otherwise be used in value-added products. This research focuses on the beneficial use of predominantly rice husk and sugarcane bagasse-based mixed biomass ashes, obtained from two paper mills in northern India. A cementitious binder was formulated from biomass ash, clay, and hydrated lime (70:20:10 by mass, respectively) using 2M NaOH solution at a liquid-to-solid mass ratio of 0.40. Compressive strength of the biomass ash binder increased linearly with compaction pressure, indicating the role of packing density. Between the two mixed biomass ashes used in this study, the one with higher amorphous content resulted in a binder with higher strength and denser reaction product. Multi-faceted characterization of the biomass ash binder indicated the presence of aluminum-substituted calcium silicate hydrate, mainly derived from the pozzolanic reaction. Keywords: Biomass ash; Clay; Characterization; Pozzolanicity; Alkali-activation; Amorphous content
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/j.cemconcomp.2018.02.011
