Use of waste steel fibers from CNC scraps in shear-deficient reinforced concrete beams

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dc.authoridISIK, Ercan/0000-0001-8057-065X
dc.authoridMartins, Carlos Humberto/0000-0001-7342-5665
dc.contributor.authorKalkan, Ilker
dc.contributor.authorOzkilic, Yasin Onuralp
dc.contributor.authorAksoylu, Ceyhun
dc.contributor.authorMydin, Md Azree Othuman
dc.contributor.authorMartins, Carlos Humberto
dc.contributor.authorHakeem, Ibrahim Y.
dc.contributor.authorIsik, Ercan
dc.date.accessioned2025-01-21T16:55:49Z
dc.date.available2025-01-21T16:55:49Z
dc.date.issued2023
dc.departmentKırıkkale Üniversitesi
dc.description.abstractThe present paper summarizes the results of an experimental program on the influence of using waste lathe scraps in the concrete mixture on the shear behavior of RC beams with different amounts of shear reinforcement. Three different volumetric ratios (1, 2 and %3) for the scraps and three different stirrup spacings (160, 200 and 270 mm) were adopted in the tests. The shear span-to-depth ratios of the beams were 2.67 and the stirrup spacing exceeded the maximum spacing limit in the building codes to unfold the contribution of lathe scraps to the shear resistances of shear-deficient beams, subject to shear-dominated failure (shear-tension). The experiments depicted that the lathe scraps have a pronounced contribution to the shear strength and load-deflection behavior of RC beams with widely-spaced stirrups. Namely, with the addition of 1%, 2% and 3% waste lathe scraps, the load-bearing capacity escalated by 9.1%, 21.8% and 32.8%, respectively, compared to the reference beam. On the other hand, the contribution of the lathe scraps to the load capacity decreases with decreasing stirrup spacing, since the closely-spaced stirrups bear the shear stresses and render the contribution of the scraps to shear resistance insignificant. The load capacity, deformation ductility index (DDI) and modulus of toughness (MOT) values of the beams were shown to increase with the volumetric fraction of scraps if the stirrups are spaced at about two times the beam depth. For the specimens with a stirrup spacing of about the beam depth, the scraps were found to have no considerable contribution to the load capacity and the deformation capacity beyond the ultimate load. In other words, for lathe scrap contents of 1-3%, the DDI values increased by 5-23% and the MOT values by 63.5-165% with respect to the reference beam with a stirrup spacing of 270 mm. The influence of the lathe scraps to the DDI and MOT values were rather limited and even sometimes negative for the stirrup spacing values of 160 and 200 mm.
dc.description.sponsorshipScience and Engineering Research Center at Najran University [NU/RCP/SERC/12/4]
dc.description.sponsorshipThe authors are thankful to the Deanship of Scientific Research under supervision of the Science and Engineering Research Center at Najran University for funding this work under the research centers funding program with grant (NU/RCP/SERC/12/4)
dc.identifier.doi10.12989/scs.2023.49.2.245
dc.identifier.endpage255
dc.identifier.issn1229-9367
dc.identifier.issn1598-6233
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85180953936
dc.identifier.scopusqualityQ1
dc.identifier.startpage245
dc.identifier.urihttps://doi.org/10.12989/scs.2023.49.2.245
dc.identifier.urihttps://hdl.handle.net/20.500.12587/25850
dc.identifier.volume49
dc.identifier.wosWOS:001104686500004
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTechno-Press
dc.relation.ispartofSteel and Composite Structures
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241229
dc.subjectdeformation ductility index; diagonal tension; energy absorption capacity; recycled scraps; shear-deficient beam; shear-dominated failure; waste materials
dc.titleUse of waste steel fibers from CNC scraps in shear-deficient reinforced concrete beams
dc.typeArticle

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