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Enhancing the fire-resistant performance of concrete-filled steel tube columns with steel fiber-reinforced concrete

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dc.citedby10
dc.contributor.authorGeorge C.en_US
dc.contributor.authorSenthil Selvan S.en_US
dc.contributor.authorSathish Kumar V.en_US
dc.contributor.authorMurali G.en_US
dc.contributor.authorGiri J.en_US
dc.contributor.authorMakki E.en_US
dc.contributor.authorSathish T.en_US
dc.contributor.authorid57985205700en_US
dc.contributor.authorid57188624837en_US
dc.contributor.authorid57698128800en_US
dc.contributor.authorid57203952839en_US
dc.contributor.authorid57198345558en_US
dc.contributor.authorid57196050212en_US
dc.contributor.authorid56736457800en_US
dc.date.accessioned2025-03-03T07:42:37Z
dc.date.available2025-03-03T07:42:37Z
dc.date.issued2024
dc.description.abstractDue to their excellent mechanical features, concrete-filled steel tube (CFST) columns are usually employed in high-rise constructions; it is also significant to consider fire safety while designing buildings. The fire-resistance performance of fibre-reinforced CFST columns is superior to that of unreinforced CFST columns under identical conditions. The post-peak behavior of CFST columns can be enhanced by incorporating fibres to reduce the brittleness of concrete. The research on this topic is limited and considerable research gaps are available in the literature. This research examines the structural performance of steel fibre-reinforced concrete (SFRC) filled steel tubes exposed to ambient and elevated temperatures. For this purpose, fourteen CFST columns were investigated and separated into two groups. The first group of CFST columns was filled with three diverse grades of conventional concrete with and without fibres, which was subjected to ambient temperature. The second group is identical to the first group except all columns are exposed to a temperature of 1050 ?. The parameters examined were the mechanical properties of concrete, load-carrying capacity, load-deflection response, axial load, and axial strain and ductility ratio. Furthermore, using different codes, a comparison was made for the column's empirically determined load-carrying capacity with the theoretical value. Besides, the morphological characteristics of concrete were examined using energy dispersive spectroscopy (EDS), scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD). The findings show that the SFRC-filled column has superior structural qualities when subjected to elevated temperatures. At high temperatures, calcium hydroxide decomposes, and the steel tube yields, causing the column to fail by premature local bucking. ? 2023 The Authorsen_US
dc.description.natureFinalen_US
dc.identifier.ArtNoe02741
dc.identifier.doi10.1016/j.cscm.2023.e02741
dc.identifier.scopus2-s2.0-85179118512
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85179118512&doi=10.1016%2fj.cscm.2023.e02741&partnerID=40&md5=82f733bae73c6261ad8f22cb9d0efc0a
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/36477
dc.identifier.volume20
dc.publisherElsevier Ltden_US
dc.relation.ispartofAll Open Access; Gold Open Access
dc.sourceScopus
dc.sourcetitleCase Studies in Construction Materials
dc.subjectColumns (structural)
dc.subjectEnergy dispersive spectroscopy
dc.subjectFire resistance
dc.subjectFourier transform infrared spectroscopy
dc.subjectFracture mechanics
dc.subjectHydrated lime
dc.subjectLime
dc.subjectLoad limits
dc.subjectLoads (forces)
dc.subjectReinforced concrete
dc.subjectScanning electron microscopy
dc.subjectStrain
dc.subjectTubes (components)
dc.subjectTubular steel structures
dc.subjectConcrete filled steel tube columns
dc.subjectElevated temperature
dc.subjectExposed to
dc.subjectFire resistant
dc.subjectHigh-rise construction
dc.subjectMechanical feature
dc.subjectPerformance
dc.subjectSteel fiber reinforced concretes
dc.subjectSteel tube
dc.subjectStructural performance
dc.subjectSteel fibers
dc.titleEnhancing the fire-resistant performance of concrete-filled steel tube columns with steel fiber-reinforced concreteen_US
dc.typeArticleen_US
dspace.entity.typePublication
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