Fabrication of Energy-Efficient Carbonate-Based Cementitious Material Using Sodium Meta-Aluminate Activated Limestone Powder

Wang, F; Long, G; He, J; Xie, Y; Tang, Z; Zhou, X; Bai, M; Zhou, JL

Fabrication of Energy-Efficient Carbonate-Based Cementitious Material Using Sodium Meta-Aluminate Activated Limestone Powder

Wang, F Long, G He, J Xie, Y Tang, Z Zhou, X Bai, M Zhou, JL

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Publisher:: American Chemical Society
Publication Type:: Journal Article
Citation:: ACS Sustainable Chemistry and Engineering, 2022, 10, (20), pp. 6559-6572
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Wang, F
dc.contributor.author	Long, G
dc.contributor.author	He, J
dc.contributor.author	Xie, Y
dc.contributor.author	Tang, Z
dc.contributor.author	Zhou, X
dc.contributor.author	Bai, M
dc.contributor.author	Zhou, JL
dc.date.accessioned	2023-03-27T02:43:21Z
dc.date.available	2023-03-27T02:43:21Z
dc.date.issued	2022-01-01
dc.identifier.citation	ACS Sustainable Chemistry and Engineering, 2022, 10, (20), pp. 6559-6572
dc.identifier.issn	2168-0485
dc.identifier.issn	2168-0485
dc.identifier.uri	http://hdl.handle.net/10453/168549
dc.description.abstract	Limestone powder (LP) and sodium meta-aluminate (SMA) were used to fabricate calcium carbonate-based cementitious material, as a solution to address the solid waste problem. The effects of SMA doses and curing conditions on the hydration properties and mechanical performance of paste were investigated. The results show that the 28-day unconfined compressive strength and flexural strength of the paste with an LP/SMA ratio of 2/1 were 49.7 and 15.9 MPa, respectively. The characterization by scanning electron microscopy, X-ray diffraction, and thermal gravimetry shows that the calcium aluminum carbonate hydroxide hydrate (CACHH) was the predominant hydrated product and had a dense layered double hydroxide structure (LDHs). The microbridge effect developed by LDHs significantly increases the flexural strength of the paste. Meanwhile, the developed paste exhibited an extremely low carbon emission and energy consumption. This study also reveals the mechanism of LP incorporated with SMA to form CACHH. Overall, this work provides an approach of high value-added utilization for LP as a binder without tedious operation, which could address carbon emission reduction and circular economy of LP.
dc.language	English
dc.publisher	American Chemical Society
dc.relation.ispartof	ACS Sustainable Chemistry and Engineering
dc.relation.isbasedon	10.1021/acssuschemeng.1c08250
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in ACS Sustainable Chemistry & Engineering, copyright © American Chemical Society after peer review. To access the final edited and published work see https://doi.org/10.1021/acssuschemeng.1c08250
dc.subject	0301 Analytical Chemistry, 0502 Environmental Science and Management, 0904 Chemical Engineering
dc.title	Fabrication of Energy-Efficient Carbonate-Based Cementitious Material Using Sodium Meta-Aluminate Activated Limestone Powder
dc.type	Journal Article
utslib.citation.volume	10
utslib.for	0301 Analytical Chemistry
utslib.for	0502 Environmental Science and Management
utslib.for	0904 Chemical Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2023-03-27T02:43:19Z
pubs.issue	20
pubs.publication-status	Published
pubs.volume	10
utslib.citation.issue	20

Abstract:

Limestone powder (LP) and sodium meta-aluminate (SMA) were used to fabricate calcium carbonate-based cementitious material, as a solution to address the solid waste problem. The effects of SMA doses and curing conditions on the hydration properties and mechanical performance of paste were investigated. The results show that the 28-day unconfined compressive strength and flexural strength of the paste with an LP/SMA ratio of 2/1 were 49.7 and 15.9 MPa, respectively. The characterization by scanning electron microscopy, X-ray diffraction, and thermal gravimetry shows that the calcium aluminum carbonate hydroxide hydrate (CACHH) was the predominant hydrated product and had a dense layered double hydroxide structure (LDHs). The microbridge effect developed by LDHs significantly increases the flexural strength of the paste. Meanwhile, the developed paste exhibited an extremely low carbon emission and energy consumption. This study also reveals the mechanism of LP incorporated with SMA to form CACHH. Overall, this work provides an approach of high value-added utilization for LP as a binder without tedious operation, which could address carbon emission reduction and circular economy of LP.

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http://hdl.handle.net/10453/168549