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Title: Çelik fiber katkısının farklı boyuna donatı oranına sahip betonarme döşemelerin zımbalama davranışı üzerinde etkileri
Other Titles: Effects of steel fibers on the punching behavior of reinforced concrete slabs with different longitudinal reinforcement ratios
Authors: Saatçi, Selçuk
Yaşayanlar, Süleyman
Yaşayanlar, Yonca
Batarlar, Baturay
Keywords: Steel fiber reinforced concrete
Punching behavior
Reinforced concrete slabs
Issue Date: 2019
Publisher: Gazi Üniversitesi
Abstract: In this study, reinforced concrete slabs in two groups, having 0.004 (D1 series) and 0.002 (D2 series) longitudinal reinforcement ratios in two orthogonal directions, were cast with concrete mixes containing 0%, 0.5%, 1% and 1.5% steel fiber ratios in volume. Slabs were 2150x2150x150 mm in dimensions. Eight slabs were tested in total under static loads. For slabs without steel fibers, the slab with higher reinforcement ratio showed punching failure before the yielding of longitudinal bars, whereas the slab with lower reinforcement ratio displayed a significantly higher ductility before final punching failure. Addition of steel fibers increased the punching load capacity up to two times. However, although addition of steel fibers also increased the maximum displacements in D1 series slabs, it did not make any significant effect on the maximum displacements of D2 series slabs. Maximum displacements were still controlled by the yielding of longitudinal reinforcement. Increasing the steel fiber ratio increased both the punching capacity and the maximum displacements in D1 series slabs, but it did not make a significant difference in behavior of D2 series beyond 1% fiber ratio. An analytical study of the test specimens were also performed using Critical Shear Crack Theory and based on comparisons of experimental and analytical results some improvements in the model were proposed. © 2019 Gazi Universitesi Muhendislik-Mimarlik. All rights reserved.
ISSN: 1300-1884
Appears in Collections:Civil Engineering / İnşaat Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
TR Dizin İndeksli Yayınlar / TR Dizin Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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