Repeatability and Pervasiveness of Self-Healing in Engineered Cementitious Composites

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dc.contributor.authorSahmaran, Mustafa
dc.contributor.authorYildirim, Gurkan
dc.contributor.authorNoori, Rezhin
dc.contributor.authorOzbay, Erdogan
dc.contributor.authorLachemi, Mohamed
dc.date.accessioned2024-09-18T20:16:55Z
dc.date.available2024-09-18T20:16:55Z
dc.date.issued2015
dc.departmentHatay Mustafa Kemal Ãœniversitesien_US
dc.description.abstractThis paper investigates the intrinsic self-healing ability of engineered cementitious composites (ECCs) coupled with multiple microcrack formation under mechanical loading based on two robustness criteria: repeatability and pervasiveness. To this end, two different composites containing Class F fly ash and slag were investigated To generate microcracks, specimens were repeatedly preloaded up to 70% of their deformation capacities under mechanical loading at the end of each specified cyclic wet/dry conditioning period Resonant frequency (RP) a,id rapid chloride permeability tests (RCPT) were used to assess the extent of damage and self-healing, and final results were supported by microscope observations. RF measurements were recorded from two different parts of each specimen (the top and middle portions) to monitor whether self-healing takes place in certain regions or whether it is pervasive over the entire specimen. Results of the experimental study show that depending on the type of mineral admixture used and the duration of initial curing before deterioration, ECC specimens can recover up to 85% of their initial RF measurements, even after six repetitive preloading applications. The recovery rates observed in the middle portion are similar to those in the top portion for both ECC mixtures (to a slightly lesser extent), which implies that self-healing is quite pervasive. Furthermore, after repeated application of severe preloading, RCPT results for both mixtures selfish) low or moderate chloride ion penetrability levels in accordance with ASTM C1202. Due to the enhanced self-healing capability of specimens, maximum crack width observed over the specimen surfaces was restricted to 190 mu m (0.008 in), even after nine preloadings. These findings suggest that under certain conditions, the ECC materials produced in this study may significantly enhance the functionality of structures by reducing the need for repair and/or maintenance.en_US
dc.description.sponsorshipScientific and Technical Research Council (TUBITAK) of Turkey [MAG-112M876]; Turkish Academy of Sciences Young Scientist Award programen_US
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 Young Scientist Award program.en_US
dc.identifier.endpage522en_US
dc.identifier.issn0889-325X
dc.identifier.issn1944-737X
dc.identifier.issue4en_US
dc.identifier.startpage513en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12483/9806
dc.identifier.volume112en_US
dc.identifier.wosWOS:000358755800003en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherAmer Concrete Insten_US
dc.relation.ispartofAci Materials Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectengineered cementitious composite (ECC)en_US
dc.subjectrepeatabilityen_US
dc.subjectself-healingen_US
dc.subjectsupplementary cementitious material (SCM)en_US
dc.titleRepeatability and Pervasiveness of Self-Healing in Engineered Cementitious Compositesen_US
dc.typeArticleen_US

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