Self-healing performance of aged cementitious composites

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dc.authoridSelcuk, Seda/0000-0002-2046-3841
dc.contributor.authorYildirim, Gurkan
dc.contributor.authorKhiavi, Arash Hamidzadeh
dc.contributor.authorYesilmen, Seda
dc.contributor.authorSahmaran, Mustafa
dc.date.accessioned2025-01-06T17:37:38Z
dc.date.available2025-01-06T17:37:38Z
dc.date.issued2018
dc.description.abstractThis study investigates the autogenous self-healing capability of one-year-old engineered cementitious composites (ECC) with different mineral admixtures to understand whether self-healing performance in late ages is similar to that of early ages. Sound and severely pre-cracked specimens were subjected to different environmental conditions including water, air, CO2-water, and CO2-air for one year plus 90 days of initial curing. Self-healing performance of ECC mixtures was assessed in terms of crack characteristics, electrical impedance testing, rapid chloride permeability testing and microstructural analysis. Laboratory findings showed that the presence of water is crucial for enhanced autogenous self-healing effectiveness, regardless of mixture composition. CO2-water curing resulted in the best self-healing performance of all curing conditions, which was confirmed with results from different performance tests throughout the experimental study. By further curing specimens under CO2-water (depending on the ECC mixture composition), cracks as wide as half a millimeter (458 mu m) were easily closed by autogenous self-healing within only 30 days of further curing, and all cracks closed completely after 90 days. Because high levels of CO2 emission are a global problem, the effectiveness of CO2-water curing in closing microcracks of aged cementitious composites specimens through autogenous self-healing can help reduce the increasing pace of CO2 release. The results of this study clearly suggest that late-age autogenous self-healing rates of ECC specimens can be significantly enhanced with proper further environmental conditioning and mixture design. (C) 2018 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipScientific and Technical Research Council (TUBITAK) of Turkey [MAG-112M876]; Turkish Academy of Sciences, Turkey, Young Scientist Award program [M.S./TUBA-GEBIP/2012-25]
dc.description.sponsorshipThe authors gratefully acknowledge the financial assistance of the Scientific and Technical Research Council (TUBITAK) of Turkey provided under Project: MAG-112M876 and the Turkish Academy of Sciences, Turkey (M.S./TUBA-GEBIP/2012-25), Young Scientist Award program.
dc.identifier.doi10.1016/j.cemconcomp.2018.01.004
dc.identifier.endpage186
dc.identifier.issn0958-9465
dc.identifier.issn1873-393X
dc.identifier.scopus2-s2.0-85041551558
dc.identifier.scopusqualityQ1
dc.identifier.startpage172
dc.identifier.urihttps://doi.org/10.1016/j.cemconcomp.2018.01.004
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2312
dc.identifier.volume87
dc.identifier.wosWOS:000425563400017
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofCement & Concrete Composites
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectEngineered Cementitious Composites (ECC)
dc.subjectSelf-healing
dc.subjectCuring conditions
dc.subjectElectrical impedance
dc.subjectRapid chloride permeability
dc.titleSelf-healing performance of aged cementitious composites
dc.typeArticle

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