Self-Healing Performance of Nanosilica-Modified Engineered Cementitious Composites Exposed to High Temperatures

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dc.authoridTANYILDIZI, Harun/0000-0002-7585-2609
dc.contributor.authorTanyildizi, Harun
dc.contributor.authorBulut, Metehan
dc.date.accessioned2024-11-07T13:32:01Z
dc.date.available2024-11-07T13:32:01Z
dc.date.issued2024
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractThis study investigated the self-healing performance of nanosilica-modified engineered cementitious composites (ECCs) exposed to high temperatures. Nanosilica (NS) was used in 0%, 0.25%, 0.50%, and 0.75% proportions of cementitious materials by mass in the mixtures. NS-modified ECC cylindrical samples (o100x200 mm) were produced and cured at 23 degrees C +/- 2 degrees C for 28 days. Then, these samples were exposed to 20 degrees C +/- 2 degrees C, 100 degrees C, 200 degrees C, 300 degrees C, 400 degrees C, 500 degrees C, 600 degrees C, 700 degrees C, and 800 degrees C temperatures. After the samples were cooled at room temperature, microcracks were formed in the ECC samples, but the samples exposed to higher than 400 degrees C were dispersed when the crack was formed. The wetting-drying cycles were applied for the self-healing of cracked samples. Lastly, the splitting tensile strength, ultrasonic pulse velocity, and chloride ion permeability of the NS-modified ECC samples were determined. Scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX), X-ray diffraction analysis (XRD), and Fourier transform infrared spectroscopy (FTIR) analyses were also performed to examine the microstructure of NS-modified ECC samples. This study found that all samples were self-healed within 15 days, and the highest splitting tensile strength recovery rate was obtained from 0.75 NS-modified ECC samples with 107.44%.
dc.identifier.doi10.1061/JMCEE7.MTENG-16871
dc.identifier.issn0899-1561
dc.identifier.issn1943-5533
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85188540325
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1061/JMCEE7.MTENG-16871
dc.identifier.urihttps://hdl.handle.net/11480/15157
dc.identifier.volume36
dc.identifier.wosWOS:001202656600027
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAsce-Amer Soc Civil Engineers
dc.relation.ispartofJournal of Materials in Civil Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectEngineered cementitious composites (ECCs)
dc.subjectNanosilica (NS)
dc.subjectHigh temperatures
dc.subjectSelf-healing
dc.titleSelf-Healing Performance of Nanosilica-Modified Engineered Cementitious Composites Exposed to High Temperatures
dc.typeArticle

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