Development of Low-Alkali, Fly Ash/Slag Geopolymers: Predictive Strength Modelling and Analyses of Impact of Curing Temperatures

Ukritnukun, S; Koshy, P; Feng, C; Rawal, A; Castel, A; Sorrell, CC

Development of Low-Alkali, Fly Ash/Slag Geopolymers: Predictive Strength Modelling and Analyses of Impact of Curing Temperatures

Ukritnukun, S Koshy, P Feng, C Rawal, A Castel, A

Sorrell, CC

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Publisher:: MDPI AG
Publication Type:: Journal Article
Citation:: Minerals, 2021, 11, (1), pp. 1-24
Issue Date:: 2021-01-11

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Field	Value	Language
dc.contributor.author	Ukritnukun, S
dc.contributor.author	Koshy, P
dc.contributor.author	Feng, C
dc.contributor.author	Rawal, A
dc.contributor.author	Castel, A https://orcid.org/0000-0003-1619-9643
dc.contributor.author	Sorrell, CC
dc.date.accessioned	2022-04-14T03:47:25Z
dc.date.available	2022-04-14T03:47:25Z
dc.date.issued	2021-01-11
dc.identifier.citation	Minerals, 2021, 11, (1), pp. 1-24
dc.identifier.issn	2075-163X
dc.identifier.issn	2075-163X
dc.identifier.uri	http://hdl.handle.net/10453/156252
dc.description.abstract	The present work analyses the effects of curing temperature (25, 40, 60 °C for 24 h), silicate modulus Ms value (1.5, 1.7, 2.0), and slag content (10, 20, 30, 40 wt%) on the compressive strength development (1, 7, 14, 28 days) of low-alkali geopolymer mortars with matrices from fly ash and blast furnace slag. These data were used to generate predictive models for 28-day compressive strength as a function of curing temperature and slag content. While the dominant variable for the 1-day compressive strength was the curing temperature, the slag content was dominant for the 28-day compressive strength. The ratio of the 1-day and 28-day compressive strengths as a function of curing temperature, Ms value, and slag content allows prediction of the maximal possible curing temperature and shows cold-weather casting to present an obstacle to setting. These data also allow prediction of the 28-day compressive strength using only the 1-day compressive strength.
dc.language	English
dc.publisher	MDPI AG
dc.relation.ispartof	Minerals
dc.relation.isbasedon	10.3390/min11010060
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0403 Geology, 0502 Environmental Science and Management, 0914 Resources Engineering and Extractive Metallurgy
dc.title	Development of Low-Alkali, Fly Ash/Slag Geopolymers: Predictive Strength Modelling and Analyses of Impact of Curing Temperatures
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0403 Geology
utslib.for	0502 Environmental Science and Management
utslib.for	0914 Resources Engineering and Extractive Metallurgy
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
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2022-04-14T03:47:23Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	1

Abstract:

The present work analyses the effects of curing temperature (25, 40, 60 °C for 24 h), silicate modulus Ms value (1.5, 1.7, 2.0), and slag content (10, 20, 30, 40 wt%) on the compressive strength development (1, 7, 14, 28 days) of low-alkali geopolymer mortars with matrices from fly ash and blast furnace slag. These data were used to generate predictive models for 28-day compressive strength as a function of curing temperature and slag content. While the dominant variable for the 1-day compressive strength was the curing temperature, the slag content was dominant for the 28-day compressive strength. The ratio of the 1-day and 28-day compressive strengths as a function of curing temperature, Ms value, and slag content allows prediction of the maximal possible curing temperature and shows cold-weather casting to present an obstacle to setting. These data also allow prediction of the 28-day compressive strength using only the 1-day compressive strength.

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http://hdl.handle.net/10453/156252