Using graphene oxide to improve physical property and control ASR expansion of cement mortar

Luo, J; Zhou, C; Li, W; Chen, S; Habibnejad Korayem, A; Duan, W

Using graphene oxide to improve physical property and control ASR expansion of cement mortar

Luo, J Zhou, C Li, W

Chen, S Habibnejad Korayem, A Duan, W

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Construction and Building Materials, 2021, 307, pp. 125006
Issue Date:: 2021-11-08

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Field	Value	Language
dc.contributor.author	Luo, J
dc.contributor.author	Zhou, C
dc.contributor.author	Li, W https://orcid.org/0000-0002-4651-1215
dc.contributor.author	Chen, S
dc.contributor.author	Habibnejad Korayem, A
dc.contributor.author	Duan, W
dc.date.accessioned	2022-05-04T01:54:32Z
dc.date.available	2022-05-04T01:54:32Z
dc.date.issued	2021-11-08
dc.identifier.citation	Construction and Building Materials, 2021, 307, pp. 125006
dc.identifier.issn	0950-0618
dc.identifier.uri	http://hdl.handle.net/10453/156985
dc.description.abstract	Alkali-silica reaction (ASR) is a slowly occurring reaction in concrete between alkaline pore solution and reactive non-crystalline silica in aggregates, which is a challenge to physical property and durability of concrete. The oxygen-containing functional groups coupled with large surface area of graphene oxide (GO) nanomaterial renders highly reactive interaction with cement-based composite. Here, the physical properties and ASR expansion test of cement mortars modified with varied loadings of GO (wGO) or/and Pyrex glass (GOPM) were implemented after optimizing GO dispersion efficiency in water. The water absorption and microstructures of GOPM were observed to figure out the mechanism of GO's effect on mechanical strength, permeability, and ASR expansion of GOPM. Results show, 15 kJ is the optimal sonication energy for the dispersion of 300 mL pristine GO-water suspension with 0.04% wGO; the effect of GO on improving the flexural and compressive strength of GOPM is remarkable, the maximal amplitude is up to 24.16%, 43.03% compared with the baseline, respectively; GO has great influence on long-term anti-permeability and controlling expansion, the nano-nucleation and interlocking effect of GO render the expansion rate of GOPM be well below 0.1% threshold.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Construction and Building Materials
dc.relation.isbasedon	10.1016/j.conbuildmat.2021.125006
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 1202 Building
dc.subject.classification	Building & Construction
dc.title	Using graphene oxide to improve physical property and control ASR expansion of cement mortar
dc.type	Journal Article
utslib.citation.volume	307
utslib.for	0905 Civil Engineering
utslib.for	1202 Building
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 - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access	*
dc.date.updated	2022-05-04T01:54:30Z
pubs.publication-status	Published
pubs.volume	307

Abstract:

Alkali-silica reaction (ASR) is a slowly occurring reaction in concrete between alkaline pore solution and reactive non-crystalline silica in aggregates, which is a challenge to physical property and durability of concrete. The oxygen-containing functional groups coupled with large surface area of graphene oxide (GO) nanomaterial renders highly reactive interaction with cement-based composite. Here, the physical properties and ASR expansion test of cement mortars modified with varied loadings of GO (wGO) or/and Pyrex glass (GOPM) were implemented after optimizing GO dispersion efficiency in water. The water absorption and microstructures of GOPM were observed to figure out the mechanism of GO's effect on mechanical strength, permeability, and ASR expansion of GOPM. Results show, 15 kJ is the optimal sonication energy for the dispersion of 300 mL pristine GO-water suspension with 0.04% wGO; the effect of GO on improving the flexural and compressive strength of GOPM is remarkable, the maximal amplitude is up to 24.16%, 43.03% compared with the baseline, respectively; GO has great influence on long-term anti-permeability and controlling expansion, the nano-nucleation and interlocking effect of GO render the expansion rate of GOPM be well below 0.1% threshold.

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http://hdl.handle.net/10453/156985