High temperature effect on the mechanical behavior of steel fiber reinforced self‐compacting concrete containing ground pumice powder

Karataş, Mehmet; Dener, Murat; Benli, Ahmet; Mohabbi, Mehrzad

doi:10.1002/suco.201900067

Cited by 40 publications

(10 citation statements)

References 51 publications

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“…The longer the bond of the anchored fiber, the greater the pull-out force. This behavior is the so-called bridging effect [55]. According to the first crack [38], it was possible to estimate the bending tensile strength of the concrete with fiber and concrete without fiber.…”

Section: Residual Flexural Strengthmentioning

confidence: 99%

Influence of Fiber Addition on the Properties of High-Performance Concrete

et al. 2021

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High performance fiber-reinforced concrete (HPFRC) has been frequently investigated in recent years. Plenty of studies have focused on different materials and types of fibers in combination with the concrete matrix. Experimental tests show that fiber dosage improves the energy absorption capacity of concrete and enhances the robustness of concrete elements. Fiber reinforced concrete has also been illustrated to be a material for developing infrastructure sustainability in RC elements like façade plates, columns, beams, or walls. Due to increasing costs of the produced fiber reinforced concrete and to ensure the serviceability limit state of construction elements, there is a demand to analyze the necessary fiber dosage in the concrete composition. It is expected that the surface and length of used fiber in combination with their dosage influence the structure of fresh and hardened concrete. This work presents an investigation of the mechanical parameters of HPFRC with different polymer fiber dosage. Tests were carried out on a mixture with polypropylene and polyvinyl alcohol fiber with dosages of 15, 25, and 35 kg/m3 as well as with control concrete without fiber. Differences were observed in the compressive strength and in the modulus of elasticity as well as in the flexural and splitting tensile strength. The flexural tensile strength test was conducted on two different element shapes: square panel and beam samples. These mechanical properties could lead to recommendations for designers of façade elements made of HPFRC.

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Section: Residual Flexural Strengthmentioning

confidence: 99%

Influence of Fiber Addition on the Properties of High-Performance Concrete

et al. 2021

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“…13 Concrete can be caused explosive spalling and strength deterioration which depends mainly on the degree of temperature, exposure duration, rate of cooling, the type and size of the structural element, and the fire-resistant properties when exposed to high temperature. 14,15 Concrete structures made of HSC show more frequent explosive spalling than NSC structures when exposed to high temperatures due to the dense microstructure of HSC which slows up the escape of vaporized water. Various parameters of porosity, permeability, different thermal expansion between cement paste and aggregates, high moisture content, heating rate, and external loads contribute to the increase in spalling.…”

Section: Introductionmentioning

confidence: 99%

Effect of ground granulated blast furnace slag on the properties of hybrid‐fiber‐reinforced high‐strength concrete under normal and high temperatures

Rezvaniyanzadeh

Fadaee

2023

Structural Concrete

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In this paper, the residual mechanical properties, mass loss, and cracking behavior of hybrid‐fiber‐reinforced high‐strength concrete (HFRHSC) containing 0%, 30%, and 60% ground granulated blast furnace slag (GGBFS) in normal and high temperatures have been investigated. Chopped aramid and steel fibers at 0%, 0.5%, and 1% by volume, either individually or in different combinations, were used to reinforce the HSC. In total, 24 different mix proportions were designed. The experimental results showed that the residual compressive strength of the majority of specimens increased at 400°C while this property of all of them decreased at 800°C. Also, the test indicated that the use of GGBFS did not reduce flexural and compressive strength of HSC significantly, and in some mixed designs, the presence of GGBFS slightly increases the strength. Moreover, another result that can be inferred is that although the utilization of hybrid fibers in concrete increases flexural strength, it may decrease its compressive strength. In addition, the residual flexural strength of most specimens was reduced at 400°C, but this property of all samples decreased at 800°C. The results showed that the simultaneous presence of GGBFS and hybrid fibers can improve the flexural strength of most specimens at different temperatures.

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“…It is now well‐known that incorporating steel fibers leads to an enhanced mechanical performance of concrete by improving crack propagation, ductility, and toughness of concrete 27–30 . Steel fiber can also reduce the general ecological effect of construction because of an improved maintenance life of structures manufactured with steel fiber‐reinforced concrete 31,32 .…”

Section: Introductionmentioning

confidence: 99%

Mechanical and durability properties of steel fiber‐reinforced concrete containing coarse recycled concrete aggregate

Kaplan

Bayraktar

Gholampour

et al. 2021

Structural Concrete

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The focus of this study is to investigate the effect of using coarse recycled concrete aggregates (RCAs) as an alternative material to natural coarse aggregate on the fresh, mechanical and durability behavior of concrete reinforced with steel fiber. Eighteen unique concrete mixes with RCA content of 0%, 50%, and 100% and steel fiber content of 0%, 1%, and 2% were prepared, and tests were performed to study slump, density, compressive and splitting tensile strengths, flexural behavior, surface hardness, surface abrasion resistance, water absorption, and sorptivity of each mix. It is shown that concrete containing RCA has a lower unit weight, compressive, splitting tensile and flexural strength, flexural toughness, surface hardness, and abrasion resistance, and a higher water absorption and sorptivity in comparison with conventional concrete. An increased compressive, splitting tensile and flexural strength, flexural toughness, surface hardness, and abrasion resistance, and a decreased water absorption and sorptivity of concrete with an increased steel fiber content from 1% to 2% is less significant compared to those from 0% to 1%. The results also show that, at RCA content of 50%, incorporating 1% steel fiber develops a concrete mix with similar or even better properties compared to unreinforced conventional concrete. At 100% RCA content, incorporating 2% steel fiber develops a concrete mix with similar properties to unreinforced conventional concrete having water to cement ratio of 0.3, but inferior properties to unreinforced conventional concrete having water to cement ratio of 0.5. These findings indicate that recycled aggregate concrete with similar or even better properties compared to concrete with natural aggregate can be developed through properly designing mixes, providing a great avenue toward the production of green construction material for structural applications.

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High temperature effect on the mechanical behavior of steel fiber reinforced self‐compacting concrete containing ground pumice powder

Cited by 40 publications

References 51 publications

Influence of Fiber Addition on the Properties of High-Performance Concrete

Influence of Fiber Addition on the Properties of High-Performance Concrete

Effect of ground granulated blast furnace slag on the properties of hybrid‐fiber‐reinforced high‐strength concrete under normal and high temperatures

Mechanical and durability properties of steel fiber‐reinforced concrete containing coarse recycled concrete aggregate

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