Performance and mechanisms of stimulated self-healing in cement-based composites exposed to saline environments

Xue, C

Performance and mechanisms of stimulated self-healing in cement-based composites exposed to saline environments

Xue, C

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Cement and Concrete Composites, 2022, 129, pp. 104470
Issue Date:: 2022-05-01

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Field	Value	Language
dc.contributor.author	Xue, C
dc.date.accessioned	2023-07-06T01:54:17Z
dc.date.available	2023-07-06T01:54:17Z
dc.date.issued	2022-05-01
dc.identifier.citation	Cement and Concrete Composites, 2022, 129, pp. 104470
dc.identifier.issn	0958-9465
dc.identifier.uri	http://hdl.handle.net/10453/171238
dc.description.abstract	Performance and mechanisms of stimulated autogenous self-healing in cement-based composites with addition of crystalline admixtures (CAs) exposed to water, seawater and NaCl solutions were investigated. Crack closure, chloride penetration, water absorption and healing products were characterized for cracked mortars exposed to wet/dry cycles. Moreover, leaching and hydration of cement affected by CAs were studied to reveal mechanisms of stimulating self-healing. The slight difference in self-healing products formed in the three saline solutions between mortars with and without CAs indicated that the capacity of stimulated self-healing strongly depends on exposure environments. Correlation between crack closure and durability recovery for cracked specimens suggests a need for performance-recovery-based method for assessing the self-healing ability. Comparison of two commercial CAs having different alkalis and effects on cement hydration revealed that mechanisms of stimulated self-healing vary significantly with the type of CAs.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Cement and Concrete Composites
dc.relation.isbasedon	10.1016/j.cemconcomp.2022.104470
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 1202 Building
dc.subject.classification	Building & Construction
dc.subject.classification	3302 Building
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4016 Materials engineering
dc.title	Performance and mechanisms of stimulated self-healing in cement-based composites exposed to saline environments
dc.type	Journal Article
utslib.citation.volume	129
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	1202 Building
utslib.copyright.status	closed_access	*
dc.date.updated	2023-07-06T01:53:59Z
pubs.publication-status	Published
pubs.volume	129

Abstract:

Performance and mechanisms of stimulated autogenous self-healing in cement-based composites with addition of crystalline admixtures (CAs) exposed to water, seawater and NaCl solutions were investigated. Crack closure, chloride penetration, water absorption and healing products were characterized for cracked mortars exposed to wet/dry cycles. Moreover, leaching and hydration of cement affected by CAs were studied to reveal mechanisms of stimulating self-healing. The slight difference in self-healing products formed in the three saline solutions between mortars with and without CAs indicated that the capacity of stimulated self-healing strongly depends on exposure environments. Correlation between crack closure and durability recovery for cracked specimens suggests a need for performance-recovery-based method for assessing the self-healing ability. Comparison of two commercial CAs having different alkalis and effects on cement hydration revealed that mechanisms of stimulated self-healing vary significantly with the type of CAs.

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http://hdl.handle.net/10453/171238