Dispersion of graphene oxide agglomerates in cement paste and its effects on electrical resistivity and flexural strength

Li, X; Wang, L; Liu, Y; Li, W; Dong, B; Duan, WH

Dispersion of graphene oxide agglomerates in cement paste and its effects on electrical resistivity and flexural strength

Li, X Wang, L Liu, Y Li, W

Dong, B Duan, WH

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Publication Type:: Journal Article
Citation:: Cement and Concrete Composites, 2018, 92 pp. 145 - 154
Issue Date:: 2018-09-01

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Field	Value	Language
dc.contributor.author	Li, X	en_US
dc.contributor.author	Wang, L	en_US
dc.contributor.author	Liu, Y	en_US
dc.contributor.author	Li, W https://orcid.org/0000-0002-4651-1215	en_US
dc.contributor.author	Dong, B	en_US
dc.contributor.author	Duan, WH	en_US
dc.date.issued	2018-09-01	en_US
dc.identifier.citation	Cement and Concrete Composites, 2018, 92 pp. 145 - 154	en_US
dc.identifier.issn	0958-9465	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131405
dc.description.abstract	© 2018 Elsevier Ltd Actual dispersion of graphene oxide (GO) in cement paste was investigated by using both X-ray computed tomography and X-ray photoelectron spectroscopy. It was found that GO nanosheets are mainly agglomerated, as an individual phase, with platelet-like morphology and little GO being absorbed onto surfaces of cement particles and hydration products. By performing an electrical resistivity test, GO agglomerates are found to be more electrically insulative than cement paste. Therefore, it is not possible to develop self-sensing cement composites by incorporating GO directly without resolving its dispersion issue. However, GO agglomerates enhance the flexural strength of cement paste because of their special morphology and intrinsic strength. Results showed that the flexural strength of cement paste was increased by 83% with incorporation of 0.04% GO by weight of cement.	en_US
dc.relation	http://purl.org/au-research/grants/arc/IH150100006
dc.relation.ispartof	Cement and Concrete Composites	en_US
dc.relation.isbasedon	10.1016/j.cemconcomp.2018.06.008	en_US
dc.subject.classification	Building & Construction	en_US
dc.title	Dispersion of graphene oxide agglomerates in cement paste and its effects on electrical resistivity and flexural strength	en_US
dc.type	Journal Article
utslib.citation.volume	92	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	1202 Building	en_US
pubs.embargo.period	Not known	en_US
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
pubs.publication-status	Published	en_US
pubs.volume	92	en_US

Abstract:

© 2018 Elsevier Ltd Actual dispersion of graphene oxide (GO) in cement paste was investigated by using both X-ray computed tomography and X-ray photoelectron spectroscopy. It was found that GO nanosheets are mainly agglomerated, as an individual phase, with platelet-like morphology and little GO being absorbed onto surfaces of cement particles and hydration products. By performing an electrical resistivity test, GO agglomerates are found to be more electrically insulative than cement paste. Therefore, it is not possible to develop self-sensing cement composites by incorporating GO directly without resolving its dispersion issue. However, GO agglomerates enhance the flexural strength of cement paste because of their special morphology and intrinsic strength. Results showed that the flexural strength of cement paste was increased by 83% with incorporation of 0.04% GO by weight of cement.

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http://hdl.handle.net/10453/131405