Self-sensing cement-based sensors with superhydrophobic and self-cleaning capacities after silane-based surficial treatments

Guo, Y; Li, W; Dong, W; Wang, K; He, X; Vessalas, K; Sheng, D

Self-sensing cement-based sensors with superhydrophobic and self-cleaning capacities after silane-based surficial treatments

Guo, Y Li, W

Dong, W Wang, K He, X

Vessalas, K

Sheng, D

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Case Studies in Construction Materials, 2022, 17
Issue Date:: 2022-12-01

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Field	Value	Language
dc.contributor.author	Guo, Y
dc.contributor.author	Li, W https://orcid.org/0000-0002-4651-1215
dc.contributor.author	Dong, W
dc.contributor.author	Wang, K
dc.contributor.author	He, X https://orcid.org/0000-0001-5336-3663
dc.contributor.author	Vessalas, K https://orcid.org/0000-0003-3948-5212
dc.contributor.author	Sheng, D https://orcid.org/0000-0002-1665-6931
dc.date.accessioned	2023-03-28T23:08:56Z
dc.date.available	2023-03-28T23:08:56Z
dc.date.issued	2022-12-01
dc.identifier.citation	Case Studies in Construction Materials, 2022, 17
dc.identifier.issn	2214-5095
dc.identifier.uri	http://hdl.handle.net/10453/168770
dc.description.abstract	A novel cement-based sensors was developed with integrated self-sensing superhydrophobicity, and self-cleaning functions in this paper. The synthesis was carried out by penetrating precast graphene nanoplate/cement-based sensors with silane/isopropanol solutions. The silane-treated cement-based sensors showed satisfactory stress/strain sensing performance with an average gauge factor of 141.8, and exhibited excellent hydrophobic behaviour with the highest water contact angle of 163° on the intact surface. The contact angle decreased to 148° and 142°, for the surface with scratches and for the inner part of sensors, respectively. The reduction was due to the spalling and less amount of silane particles within the scratches and the harder entry of silane to the inner part of sensor. The self-cleaning properties of silane-treated cement-based sensor were evaluated by the visual observation of removing efficiency of hydrophilic carbon black dust and lipophilic sauces after water rinsing. It was found that the silane-treated cement-based sensor showed excellent self-cleaning performance using hydrophilic carbon dust. Despite the removing efficiency decreased for the lipophilic sauces, the silane-treated cement-based sensors maintained much less stain than that of untreated ones on the surface. The related results will promote the synthesis and practical applications of multifunctional cement-based sensors for the application of intrisic structural health monitoring.
dc.language	English
dc.publisher	ELSEVIER
dc.relation	http://purl.org/au-research/grants/arc/DE150101751
dc.relation	http://purl.org/au-research/grants/arc/IH180100010
dc.relation	http://purl.org/au-research/grants/arc/DP220101051
dc.relation	http://purl.org/au-research/grants/arc/DP220100036
dc.relation.ispartof	Case Studies in Construction Materials
dc.relation.isbasedon	10.1016/j.cscm.2022.e01311
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Self-sensing cement-based sensors with superhydrophobic and self-cleaning capacities after silane-based surficial treatments
dc.type	Journal Article
utslib.citation.volume	17
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
pubs.organisational-group	/University of Technology Sydney/Strength - CAMGIS - Centre for Advanced Modelling and Geospatial lnformation Systems
utslib.copyright.status	open_access	*
dc.date.updated	2023-03-28T23:08:37Z
pubs.publication-status	Published
pubs.volume	17

Abstract:

A novel cement-based sensors was developed with integrated self-sensing superhydrophobicity, and self-cleaning functions in this paper. The synthesis was carried out by penetrating precast graphene nanoplate/cement-based sensors with silane/isopropanol solutions. The silane-treated cement-based sensors showed satisfactory stress/strain sensing performance with an average gauge factor of 141.8, and exhibited excellent hydrophobic behaviour with the highest water contact angle of 163° on the intact surface. The contact angle decreased to 148° and 142°, for the surface with scratches and for the inner part of sensors, respectively. The reduction was due to the spalling and less amount of silane particles within the scratches and the harder entry of silane to the inner part of sensor. The self-cleaning properties of silane-treated cement-based sensor were evaluated by the visual observation of removing efficiency of hydrophilic carbon black dust and lipophilic sauces after water rinsing. It was found that the silane-treated cement-based sensor showed excellent self-cleaning performance using hydrophilic carbon dust. Despite the removing efficiency decreased for the lipophilic sauces, the silane-treated cement-based sensors maintained much less stain than that of untreated ones on the surface. The related results will promote the synthesis and practical applications of multifunctional cement-based sensors for the application of intrisic structural health monitoring.

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