Piezoresistivity of Carbon Black/Cement-Based Sensor Enhanced with Polypropylene Fibre

Li, W; Dong, W; Shah, SP

Piezoresistivity of Carbon Black/Cement-Based Sensor Enhanced with Polypropylene Fibre

Li, W

Dong, W Shah, SP

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Publisher:: Springer Nature
Publication Type:: Conference Proceeding
Citation:: 2022, 36, pp. 889-899
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Li, W https://orcid.org/0000-0002-4651-1215
dc.contributor.author	Dong, W
dc.contributor.author	Shah, SP
dc.date.accessioned	2023-03-10T18:57:20Z
dc.date.available	2023-03-10T18:57:20Z
dc.date.issued	2022-01-01
dc.identifier.citation	2022, 36, pp. 889-899
dc.identifier.isbn	9783030837181
dc.identifier.issn	2211-0844
dc.identifier.issn	2211-0852
dc.identifier.uri	http://hdl.handle.net/10453/167035
dc.description.abstract	In this study, polypropylene (PP) was added to develop carbon black (CB)/cementitious composites as cement-based sensors. The mechanical properties and piezoresistivity were been experimentally investigated. The compressive strength slightly decreased, while the flexural strength was significantly increased with the increased amount of PP fibres. The improvement is mainly achieved by the reduced CB concentration in cement matrix and the excellent tensile strength of PP fibres. Under the cyclic compression, the piezoresistivity increased by three times for 0.4 wt% PP fibres filled CB/cementitious composite, regardless of the loading rates. The flexural stress sensing efficiency was considerably lower than that of compressive stress sensing, but it increased with the amount of PP fibres. Electrical conductivity increased with the amount of PP fibres, due to the enclosed CB nanoparticles and more conductive passages. Moreover, fitting formulas were proposed and used to evaluate the self-sensing capacity, with the attempts to apply cement-based sensors for structural health monitoring.
dc.language	en
dc.publisher	Springer Nature
dc.relation.ispartofseries	RILEM Bookseries
dc.relation.isbasedon	10.1007/978-3-030-83719-8_76
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Piezoresistivity of Carbon Black/Cement-Based Sensor Enhanced with Polypropylene Fibre
dc.type	Conference Proceeding
utslib.citation.volume	36
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	2023-03-10T18:57:18Z
pubs.publication-status	Published
pubs.volume	36

Abstract:

In this study, polypropylene (PP) was added to develop carbon black (CB)/cementitious composites as cement-based sensors. The mechanical properties and piezoresistivity were been experimentally investigated. The compressive strength slightly decreased, while the flexural strength was significantly increased with the increased amount of PP fibres. The improvement is mainly achieved by the reduced CB concentration in cement matrix and the excellent tensile strength of PP fibres. Under the cyclic compression, the piezoresistivity increased by three times for 0.4 wt% PP fibres filled CB/cementitious composite, regardless of the loading rates. The flexural stress sensing efficiency was considerably lower than that of compressive stress sensing, but it increased with the amount of PP fibres. Electrical conductivity increased with the amount of PP fibres, due to the enclosed CB nanoparticles and more conductive passages. Moreover, fitting formulas were proposed and used to evaluate the self-sensing capacity, with the attempts to apply cement-based sensors for structural health monitoring.

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http://hdl.handle.net/10453/167035