Multifunctional cementitious composites with integrated self-sensing and self-healing capacities using carbon black and slaked lime

Dong, W; Li, W; Wang, K; Shah, SP; Sheng, D

Multifunctional cementitious composites with integrated self-sensing and self-healing capacities using carbon black and slaked lime

Dong, W Li, W

Wang, K Shah, SP Sheng, D

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Ceramics International, 2022
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Dong, W
dc.contributor.author	Li, W https://orcid.org/0000-0002-4651-1215
dc.contributor.author	Wang, K
dc.contributor.author	Shah, SP
dc.contributor.author	Sheng, D https://orcid.org/0000-0002-1665-6931
dc.date.accessioned	2022-05-03T07:16:09Z
dc.date.available	2022-05-03T07:16:09Z
dc.date.issued	2022-01-01
dc.identifier.citation	Ceramics International, 2022
dc.identifier.issn	0272-8842
dc.identifier.uri	http://hdl.handle.net/10453/156949
dc.description.abstract	This study aims to develop multifunctionality of cementitious composites with the integrated self-sensing and self-healing capacities by incorporating conductive carbon black (CB) with CB-encapsulated slaked lime (SL). The microsized SL particles were premixed with a half of designed content of nanosized CB particles. When CB agglomerations coat around the SL surfaces, SL does not hydrate until the CB coating is removed. Another half of designed weight of CB is uniformly dispersed using ultrasonication with superplasticizer and added to obtain piezoresistivity. The results show that the stress sensing capacity of CB-SL-cementitious composite performs well with the compressive stress. Autogenous healing performances presented significantly can improve the self-healing capacity with the increase of SL. Furthermore, the healing efficiency is affected by the crack width and dispersion of SL, and the smaller cracks with SL are more easily healed. The size of CB agglomerations decreases with the added SL, and the main product of self-healing is calcium carbonate.
dc.language	en
dc.publisher	Elsevier BV
dc.relation	http://purl.org/au-research/grants/arc/DE150101751
dc.relation	http://purl.org/au-research/grants/arc/IH150100006
dc.relation	http://purl.org/au-research/grants/arc/IH200100010
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	Ceramics International
dc.relation.isbasedon	10.1016/j.ceramint.2022.03.260
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering, 19 Studies in Creative Arts and Writing
dc.subject.classification	Materials
dc.title	Multifunctional cementitious composites with integrated self-sensing and self-healing capacities using carbon black and slaked lime
dc.type	Journal Article
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
utslib.for	19 Studies in Creative Arts and Writing
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	2022-05-03T07:16:06Z
pubs.publication-status	Published

Abstract:

This study aims to develop multifunctionality of cementitious composites with the integrated self-sensing and self-healing capacities by incorporating conductive carbon black (CB) with CB-encapsulated slaked lime (SL). The microsized SL particles were premixed with a half of designed content of nanosized CB particles. When CB agglomerations coat around the SL surfaces, SL does not hydrate until the CB coating is removed. Another half of designed weight of CB is uniformly dispersed using ultrasonication with superplasticizer and added to obtain piezoresistivity. The results show that the stress sensing capacity of CB-SL-cementitious composite performs well with the compressive stress. Autogenous healing performances presented significantly can improve the self-healing capacity with the increase of SL. Furthermore, the healing efficiency is affected by the crack width and dispersion of SL, and the smaller cracks with SL are more easily healed. The size of CB agglomerations decreases with the added SL, and the main product of self-healing is calcium carbonate.

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http://hdl.handle.net/10453/156949