Pull-out behaviour of hooked steel fibres

Robins, Peter J.; Austin, Simon A.; Jones, P. A.

doi:10.1007/bf02483148

Cited by 182 publications

(56 citation statements)

References 8 publications

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“…In fact, for hooked fibers the increment of Lb from 10 to 30 mm provided an increase on the P max and G 1mm of in 20% and 18%, respectively. These results demonstrate that the pullout response of hooked fibers at given embedment length is predominantly influenced by the mobilization and straightening of the hook, which is in accordance with published findings [2,6]. In Fig.…”

Section: Resultssupporting

confidence: 93%

Bond-Slip Mechanisms of Hooked-End Steel Fibers in Self-Compacting Concrete

Cunha

Barros

Sena-Cruz

2008

MSF

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The experimental results of hooked-end steel fibers pullout tests on a self-compacting concrete medium are presented and discussed in this work. The influence of fiber embedment length on the fiber pullout behavior is studied. The role of the end hook of the fiber on the overall pullout behavior is also investigated by carrying out tests with fibers without its end hook, in order to separate the contribution of the frictional bond component from those derived from the mechanisms provided by the end hook of the fiber. Finally, the experimental bond-slip relationships are modeled by an analytical model.

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Section: Resultssupporting

confidence: 93%

Bond-Slip Mechanisms of Hooked-End Steel Fibers in Self-Compacting Concrete

Cunha

Barros

Sena-Cruz

2008

MSF

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“…Structural models simulated SFRC prisms mechanical behaviour under bending were observed in Pupurs (2011), Li andMobasher (1998), Prudencio et al (2007) and Jones et al (2007). Pull-out tests with different fibres were performed and reported in Pupurs (2011), Robins et al (2002, Kononova (2009) andNg et al (2010).…”

Section: Sfrc Cracking Process Numerical Modellingmentioning

confidence: 99%

Effect of Short Fibers Orientation on Mechanical Properties of Composite Material – Fiber Reinforced Concrete

Lūsis

Krasņikovs

Kononova

et al. 2017

Journal of Civil Engineering and Management

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Traditional fiberconcrete structures have fibres in the mix oriented in all spatial directions, distributed in the structural element volume homogenously, what not easy to obtain in practice. In many situations, structurally more effective is the insertion of fibres into the concrete structural element body by forming layers, with a predetermined fibre concentration and orientation in every layer. In the present investigation, layered fibre concrete is under investigation. Short steel fibres were attached to flexible warps with the necessary fibres concentration and orientation. Warps were placed into the prismatic mould separating them by concrete layers without fibres. Prisms were matured and tested under four-point bending. The bending-affected mechanical behaviour of cracked fibre concrete was simulated numerically by using a developed structural model. Comparing the simulation results with experimental data, material micromechanical fracture mechanisms were analysed and evaluated.

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“…Studies of fibre pull-out (69) showed two types of test configuration: the first one was carried out with the aim of achieving the value of the critical length (it also assessed frictional stresses that appear when pulling out the fibre); and the second was performed by means of performing pull-out tests of polyolefin fibres embedded in several lengths and by varying the angle of incidence (70).…”

Section: Pull-out Behaviourmentioning

confidence: 99%

Recent advances in structural fibre-reinforced concrete focused on polyolefin-based macro-synthetic fibres

Alberti

Enfedaque

Iranzo³

2020

Mater. construcc.

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Fibre-reinforced concrete (FRC) allows reduction in, or substitution of, steel-bars to reinforce concrete and led to the commonly named structural FRC, with steel fibres being the most widespread. Macro-polymer fibres are an alternative to steel fibres, being the main benefits: chemical stability and lower weight for analogous residual strengths of polyolefin-fibre-reinforced concrete (PFRC). Furthermore, polyolefin fibres offer additional advantages such as safe-handling, low pump-wear, light weight in transport and storage, and an absence of corrosion. Other studies have also revealed environmental benefits. After 30 years of research and practice, there remains a need to review the opportunities that such a type of fibre may provide for structural FRC. This study seeks to show the advances and future challenges of use of these polyolefin fibres and summarise the main properties obtained in both fresh and hardened states of PFRC, focussing on the residual strengths obtained from flexural tensile tests. Citation/Citar como: Alberti, M.G.; Enfedaque, A.; Gálvez, J.C., Picazo, A. (2020) Recent advances in structural fibrereinforced concrete focused on polyolefin-based macro-synthetic fibres. Mater. Construcc. 70 [337], e206 https://doi. org/10.3989/mc.2020.12418 Palabras clave: Hormigón; Refuerzo de fibras; Propiedades mecánicas; Resistencia a la tracción; Durabilidad; Fibras de poliolefina. ORCID ID: M.G. Alberti

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Pull-out behaviour of hooked steel fibres

Cited by 182 publications

References 8 publications

Bond-Slip Mechanisms of Hooked-End Steel Fibers in Self-Compacting Concrete

Bond-Slip Mechanisms of Hooked-End Steel Fibers in Self-Compacting Concrete

Effect of Short Fibers Orientation on Mechanical Properties of Composite Material – Fiber Reinforced Concrete

Recent advances in structural fibre-reinforced concrete focused on polyolefin-based macro-synthetic fibres

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