Effective Steel Fiber Type Investigation on Ultra High Performance Fiber Reinforced Concrete Beams

Türker, Kaan; Birol, Tamer; Yavaş, Altuğ; Hasgül, Umut

doi:10.5578/fmbd.39342

Cited by 9 publications

(3 citation statements)

References 10 publications

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“…Due to its high flexural and shear capacity, stiffness, and cracking control, the UHPFRC is particularly attractive for beams (Turker et al, 2016). The addition of steel fibers to reinforced concrete beam increases its shear strength through post-cracking tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Effective fiber type investigation on the shear behavior of ultrahigh-performance fiber-reinforced concrete beams

Yavaş

Hasgül

Türker

et al. 2019

Advances in Structural Engineering

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In this study, the effects of different fiber types on shear behavior (cracking pattern, shear cracking strength, ultimate shear strength, and post-cracking deformability) of ultrahigh-performance fiber-reinforced concrete beams were investigated experimentally. For this purpose, 15 ultrahigh-performance fiber-reinforced concrete beams including different steel fiber types (two straight, two hooked, and one double hooked) with three volume fractions (0.5%, 1.0%, and 1.5%) were casted without shear reinforcement and tested under four-point loading until the failure. In addition to the experimental program, three existing numerical models proposed for the shear capacity of fiber-reinforced concrete beams were investigated to show the applicability of these models to the ultrahigh-performance fiber-reinforced concrete beams. The experimental results demonstrated that the straight fiber of 13 mm is the most effective fiber type in terms of the considered parameters. However, the addition of 13-mm straight fiber with 1.5% by volume into the ultrahigh-performance fiber-reinforced concrete beam changed the failure mode from the shear to flexure without shear reinforcement.

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Section: Introductionmentioning

confidence: 99%

Effective fiber type investigation on the shear behavior of ultrahigh-performance fiber-reinforced concrete beams

Yavaş

Hasgül

Türker

et al. 2019

Advances in Structural Engineering

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“…Thus, the UHPFRC's superior mechanical properties allow more economic and long-life structures in comparison to the traditional normal or high strength concrete usages [7,13]. The abovementioned advantages of the UHPFRC become much more evident in design applications of reinforced concrete beams [7,13,14].…”

Section: Introductionmentioning

confidence: 99%

Replacement of Stirrups by Steel Fibers in Shear Dominant UHPFRC Beams

Hasgül

Yavaş

Birol

2023

Turkish Journal of Civil Engineering

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In the present study, the impacts of variety of fiber types and amounts on shear dominant Ultra High Performance Fiber Reinforced Concrete (UHPFRC) beams and the feasibility of fully replacement of stirrups by the steel fibers were investigated. Fifteen UHPFRC beams containing five different fiber types and three volume fractions were prepared without stirrup and were loaded under four-point loading. The influences of steel fiber were discussed in terms of the load-deflection behavior, cracking behavior, collapse modes, ultimate shear strength, nominal moment capacity and deflection ductility. The steel fiber use prominently increased the post-cracking stiffness and load capacity of the UHPFRC beams with the help of the fibers’ crack-bridging ability. Conversely, the steel fibers in different types didn’t have an importance on the collapse mode of the shear dominant UHPFRC beams. The use of straight steel fibers in the UHPFRC beams, even at very low volume fractions of 0.5%, changed the collapse condition from shear to flexure resulting in a ductile behavior. But the hooked fiber inclusion by 1.5 vol% at least is needed to guarantee the flexural behavior regardless of hooked or multi hooked-end form.

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“…The concept of recycling cement-based industrial waste materials in concrete production has been widely used, with various research providing results. However, studies and investigations are ongoing to obtain more accurate and practical results [1].…”

Section: Introductionmentioning

confidence: 99%

Cold Bonded and Low Temperature Sintered Artificial Aggregate Production by Using Waste Materials

Ibrahim

Atmaca²

2022

Period. Polytech. Civil Eng.

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The paper presented the possibility of manufacturing aggregates from industrial waste materials and their ecological benefits. The cold bonding process to create aggregates uses substantially less energy than the sintering technique. This study deals with the outcomes of an experimental assessment of the physical and strength properties of environment-friendly cold-bonded and sintered fly ash (FA), ground granulated blast furnace slag (GGBFS), and quartz (Q) lightweight aggregates. The waste materials were mixed with Portland cement at 20–50 percent by weight to make artificial lightweight aggregates. To investigate the impacts of temperature on the physical properties, such as crushing strength, density, and water absorption, the pellets were sintered at 300, 600, and 900 °C for an hour. The results show that all the produced aggregates might be categorized as lightweight aggregates due to the combinations' average densities being less than 2,000 kg/m3. The fly ash lightweight aggregates had higher density and crushing strength, as well as decreased water absorption. The density and crushing strength improved somewhat by raising the temperature, while the water absorption decreased with increased temperature. In this research, the most efficient mineral admixture concentration has been evaluated as 50 percent for both fly ash and ground granulated blast furnace slag and 30 percent for quartz for cold-bonded pellets. Furthermore, superior physical qualities have been reported at the 900 °C sintering temperature.

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Effective Steel Fiber Type Investigation on Ultra High Performance Fiber Reinforced Concrete Beams

Cited by 9 publications

References 10 publications

Effective fiber type investigation on the shear behavior of ultrahigh-performance fiber-reinforced concrete beams

Effective fiber type investigation on the shear behavior of ultrahigh-performance fiber-reinforced concrete beams

Replacement of Stirrups by Steel Fibers in Shear Dominant UHPFRC Beams

Cold Bonded and Low Temperature Sintered Artificial Aggregate Production by Using Waste Materials

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