Flexural Experiments on B58 Type Railway Sleepers with Different Dosages of Steel Fibers

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dc.contributor.authorKasapoğlu, Ercan
dc.contributor.authorHaktanır, Tefaruk
dc.date.accessioned2025-02-24T16:23:45Z
dc.date.available2025-02-24T16:23:45Z
dc.date.issued2024
dc.departmentNuh Naci Yazgan
dc.description.abstractThe flexural strengths and toughnesses of 15 post-tensioned B58 type railway sleepers produced at the Turkish State Railroads Sivas Plant using C40 class concrete with addition of hooked steel fibers at dosages of 0, 20, 30, 40, 50 kg/m3 were experimentally determined. Four-point flexural experiments were applied to them in one month after their production and proper curing. Three cylindrical samples of 15×30 cm dimensions taken from the first and the fourth batches apiece were subjected to standard compression tests with compressometer rings mounted on each sample after having been cured in 21 °C water tank for 28 days, resulting in their compressive strength and modulus of elasticity. Modeling a railway sleeper as a post-tensioned reinforced-concrete beam, the maximum load it can resist in the experimented configuration was calculated by the ultimate-strength method using its dimensions and material properties. The experimentally-measured maximum load carried by the reference sleeper without any steel fibers was found to be 1.34 times the theoretically-calculated value, and the same ratio was found to be 1.59 for the sleepers having steel fibers of 40 kg/m3 dosage, accounting for an increase of 18%. And, the experimentally-measured toughness of the sleepers with 40 kg/m3 dosage steel fibers was found to be 23% greater than that of the reference sleepers.
dc.description.abstractThe flexural strengths and toughnesses of 15 post-tensioned B58 type railway sleepers produced at the Turkish State Railroads Sivas Plant using C40 class concrete with addition of hooked steel fibers at dosages of 0, 20, 30, 40, 50 kg/m3 were experimentally determined. Four-point flexural experiments were applied to them in one month after their production and proper curing. Three cylindrical samples of 15×30 cm dimensions taken from the first and the fourth batches apiece were subjected to standard compression tests with compressometer rings mounted on each sample after having been cured in 21 °C water tank for 28 days, resulting in their compressive strength and modulus of elasticity. Modeling a railway sleeper as a post-tensioned reinforced-concrete beam, the maximum load it can resist in the experimented configuration was calculated by the ultimate-strength method using its dimensions and material properties. The experimentally-measured maximum load carried by the reference sleeper without any steel fibers was found to be 1.34 times the theoretically-calculated value, and the same ratio was found to be 1.59 for the sleepers having steel fibers of 40 kg/m3 dosage, accounting for an increase of 18%. And, the experimentally-measured toughness of the sleepers with 40 kg/m3 dosage steel fibers was found to be 23% greater than that of the reference sleepers.
dc.description.sponsorshipTürkiye Cumhuriyeti Devlet Demir Yolları Genel Müdürlüğü
dc.identifier.doi10.18400/tjce.1394166
dc.identifier.endpage142
dc.identifier.issn2822-6836
dc.identifier.issue5
dc.identifier.startpage133
dc.identifier.urihttps://doi.org/10.18400/tjce.1394166
dc.identifier.urihttps://hdl.handle.net/20.500.14440/212
dc.identifier.volume35
dc.language.isotr
dc.publisherTMMOB İnşaat Mühendisleri Odası
dc.relation.ispartofTurkish Journal of Civil Engineering
dc.relation.publicationcategoryDiğer
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_DergiPark_20250242
dc.subjectConcrete railway sleepers
dc.subjectsteel fibers
dc.subjectflexural strength
dc.subjecttoughness
dc.subjectConcrete railway sleepers
dc.subjectsteel fibers
dc.subjectflexural strength
dc.subjecttoughness
dc.titleFlexural Experiments on B58 Type Railway Sleepers with Different Dosages of Steel Fibers
dc.title.alternativeFlexural Experiments on B58 Type Railway Sleepers with Different Dosages of Steel Fibers
dc.typeTechnical Brief

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