Complete diagrams of strain under axial tension of steel-fiber reinforced concrete with different fiber types and content

Krasnovsky, Rostislav; Kapustin, Dmitriy; Korotkikh, Dmitry; Efishov, Luka

doi:10.1088/1757-899x/1030/1/012013

Cited by 2 publications

(1 citation statement)

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“…Steel-fiber reinforced concretes (SFRCs) have been widely utilized in deep underground engineering, tunnels, and pavements due to their improved strength, toughness, ductility, and ease of construction, etc. (1)(2)(3)(4)(5)(6) In addition to the fiber volume fraction and aspect ratio of length to diameter, the longitudinal shape of the fibers affects the bonding strength between the fibers and concrete, thereby impacting the pullout behavior of fibers and the mechanical properties of fiber-reinforced concretes (7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19). For example, it has been confirmed experimentally that deformed (i.e., hooked and twisted) steel fibers embedded in concrete provide more effective pullout resistance than straight steel fibers (7)(8)(9)(10)(11)(12)(13)(14).…”

Section: Introductionmentioning

confidence: 99%

Effect of fiber section shape and volume fraction on the mechanical properties of steel-fiber reinforced concretes

He,

Wu,

Zhang

et al. 2023

materconstrucc

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This study presents the preparation of steel-fiber reinforced concretes (SFRCs) using straight navicular fibers with annular-sector-shaped sections and corrugated fiber with rectangular-shaped sections, respectively. The flexural and splitting tensile strengths of both the respective SFRCs increase with increasing fiber volume fraction, whereas their compressive strengths initially increase, then decrease, and then increase again. For the same fiber volume fraction, the mechanical properties of the navicular fiber-reinforced concrete are superior to those of the corrugated fiber-reinforced concretes. The introduction of steel fiber changes the failure mode of the plain concrete during bending from a typical brittle mode to a bimodal ductile failure mode. As compared to the corrugated fiber, the navicular fiber has stronger interface bonding to concrete and a higher friction resistance to fiber sliding and subsequent pullout. Furthermore, navicular fiber has a higher load-bearing capacity, which makes it more favorable for improving the mechanical properties of plain concrete.

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Section: Introductionmentioning

confidence: 99%

Effect of fiber section shape and volume fraction on the mechanical properties of steel-fiber reinforced concretes

He,

Wu,

Zhang

et al. 2023

materconstrucc

View full text Add to dashboard Cite

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Mechanical Properties of Ultra-High Performance Fiber-Reinforced Concrete With Different Types of Steel Fiber

Soloviev,

Matiushin

2024

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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The article examines the influence of steel fiber type and volumetric content on the mechanical properties of UHPFRC. Five fiber types were used: corrugated 15/0.3 and 22/0.3 mm, straight 13/0.3 and 13/0.2 mm, and hooked-end 30/0.5 mm. The fiber volume content ranged from 0 to 3%. During the experimental studies, compressive strength, flexural strength, as well as the flexural fracture energy were determined. It has been discovered that an increase in the volumetric content of steel fiber results in an enhancement of all the properties under consideration, irrespective of the type of fiber. The fiber has the biggest effect on the bending fracture energy and the least on the compressive strength. Linear relationships between the mechanical characteristics of UHPFRC and the fiber factor were established, which reflects the volumetric content, length, and diameter of an individual fiber. The slope angle of the approximating lines of the “compressive strength-fiber factor” and “flexural strength-fiber factor” relationships takes on different values depending on the type of fiber used. The highest slope angle is found for corrugated fiber. It was discovered that there is a threshold value of the fiber factor, upon reaching which the steel fiber leads to an increase in the flexural strength of the UHPFRC. According to a generalized quality criterion it has been determined that corrugated fiber with dimensions of 22/0.3 mm is the optimal substitute for straight fiber 13/0.2 mm, which is widely utilized for the production of Ultra-High Performance Fiber-Reinforced Concrete

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Complete diagrams of strain under axial tension of steel-fiber reinforced concrete with different fiber types and content

Cited by 2 publications

References 1 publication

Effect of fiber section shape and volume fraction on the mechanical properties of steel-fiber reinforced concretes

Effect of fiber section shape and volume fraction on the mechanical properties of steel-fiber reinforced concretes

Mechanical Properties of Ultra-High Performance Fiber-Reinforced Concrete With Different Types of Steel Fiber

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