Behavior of Confined Self-Compacting Concrete under Compression at Elevated Temperatures

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dc.contributor.authorKhan, Athiq Ulla
dc.contributor.authorKumar, Nanjundaswamy Sateesh
dc.contributor.authorBahrami, Alireza
dc.contributor.authorOzkilic, Yasin Onuralp
dc.contributor.authorImran, Mohammed
dc.contributor.authorAlthaqafi, Essam
dc.contributor.authorIslam, Saiful
dc.date.accessioned2024-02-23T14:35:07Z
dc.date.available2024-02-23T14:35:07Z
dc.date.issued2023
dc.departmentNEÜen_US
dc.description.abstractThe performance of self-compacting concrete (SCC) is gaining popularity in construction due to its exceptional strength and durability. However, the properties of combined steel and concrete at elevated temperatures lack experimental data from previous research. This study aimed to investigate the behavior of the SCC core with a steel tube at ambient and elevated temperatures varying from 100 degrees C to 800 degrees C with 100 degrees C intervals for each test specimen. Tests were conducted on circular steel tubes filled with SCC for different grades (M25, M30, and M40) under compression at elevated temperatures. Experimental observations revealed that the stress-strain curve increased with increasing the cross-sectional area and grade of concrete. However, increasing the temperature and length-to-diameter ratio reduced the stress-strain curve. At elevated temperatures, confined SCC experienced a smaller decrease in the overall modulus of elasticity when compared to unconfined concrete. Within the compressive elastic region (from 30 degrees C to 400 degrees C), there was a significant relationship between lateral strain and longitudinal strain, which was followed by a sudden increase beyond 400 degrees C. Equations for various design parameters were proposed based on the peak load and confinement factor of confined SCC-filled steel tubes (SCCFSTs) via multiple regression. Moreover, this study developed load-axial shortening curves, identifying significant properties such as the yield strength of confined SCCFSTs, including the load-carrying capacity. The predicted numerical analysis results were well aligned with the experimental results, and the findings contributed valuable insights for designing resilient and durable combined SCC and steel tube infrastructures.en_US
dc.description.sponsorshipDeanship of Scientific Research at King Khalid University, Abha, Saudi Arabia [RGP2/563/44]en_US
dc.description.sponsorshipThe authors extend their appreciation to the Deanship of Scientific Research at King Khalid University, Abha, Saudi Arabia for providing financial support to this research work through Large Groups Research Project under grant number RGP2/563/44.en_US
dc.identifier.doi10.3390/buildings13123115
dc.identifier.issn2075-5309
dc.identifier.issue12en_US
dc.identifier.scopus2-s2.0-85180549932en_US
dc.identifier.urihttps://doi.org/10.3390/buildings13123115
dc.identifier.urihttps://hdl.handle.net/20.500.12452/15885
dc.identifier.volume13en_US
dc.identifier.wosWOS:001131350600001en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherMdpien_US
dc.relation.ispartofBuildingsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSelf-Compacting Concreteen_US
dc.subjectCompressionen_US
dc.subjectElevated Temperatureen_US
dc.subjectLoad-Carrying Capacityen_US
dc.subjectDurabilityen_US
dc.subjectRegressionen_US
dc.titleBehavior of Confined Self-Compacting Concrete under Compression at Elevated Temperaturesen_US
dc.typeArticleen_US

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