Assessment of the shear behaviour of polyolefin fibre reinforced concrete and verification by means of digital image correlation

Iranzo, Álvaro Picazo; Gálvez, Jaime C.; Alberti, Marcos García; Enfedaque, Alejandro

doi:10.1016/j.conbuildmat.2018.05.235

Cited by 37 publications

(26 citation statements)

References 36 publications

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“…This was also significantly higher compared to the composite containing untreated recycled PET fibers (6.5 kJ/m 2 ). The results were suitable for the previous studies, which reported the use of fibers in different types of building materials to improve toughness and energy absorption capacity [38][39][40][41][42][43].…”

Section: Influent Of Stearic Acid and Recycled Pet Fiberssupporting

confidence: 71%

Synergistic Influences of Stearic Acid Coating and Recycled PET Microfibers on the Enhanced Properties of Composite Materials

Nguyen

et al. 2020

Materials

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This study aims to produce novel composite artificial marble materials by bulk molding compound processes, and improve their thermal and mechanical properties. We employed stearic acid as an efficient surface modifying agent for CaCO3 particles, and for the first time, a pretreated, recycled, polyethylene terephthalate (PET) fibers mat is used to reinforce the artificial marble materials. The innovative aspects of the study are the surface treatment of CaCO3 particles by stearic acid. Stearic acid forms a monolayer shell, coating the CaCO3 particles, which enhances the compatibility between the CaCO3 particles and the matrix of the composite. The morphology of the composites, observed by scanning electron microscopy, revealed that the CaCO3 phase was homogeneously dispersed in the epoxy matrix under the support of stearic acid. A single layer of a recycled PET fibers mat was pretreated and designed in the core of the composite. As expected, these results indicated that the fibers could enhance flexural properties, and impact strength along with thermal stability for the composites. This combination of a pretreated, recycled, PET fibers mat and epoxy/CaCO3-stearic acid could produce novel artificial marble materials for construction applications able to meet environmental requirements.

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Section: Influent Of Stearic Acid and Recycled Pet Fiberssupporting

confidence: 71%

Synergistic Influences of Stearic Acid Coating and Recycled PET Microfibers on the Enhanced Properties of Composite Materials

Nguyen

et al. 2020

Materials

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“…The configuration of this type of test may be seen in Figure 31. Recent research has assessed the shear behaviour in the case of PFRC, (107) showing that it is possible to achieve significant improvements as in the case of SFRC. The curves provided in Figure 32 show that the push-off tests for PFRC reach shear strength values that may be applied in structural design, reducing the amount of shear reinforcement by the presence of fibres.…”

Section: Shear Behaviour Of Pfrcmentioning

confidence: 99%

“…Average curves CSD vs. average shear (τ aver ) of the four types of concrete(107). The figure shows the results obtained with a medium-strength concrete with 6 and 7.5kg/ m³ of polyolefin fibres (MSC6 and MSC7.5), a conventional vibrated concrete with 10kg/m³ (VCC10) of polyolefin fibres and a self-compacting concrete with 10kg/m³ of polyolefin fibres.…”

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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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“…Conventionally, steel fibres have been the most used ones in concrete structural elements and accordingly the material created has been described as steel fibre-reinforced concrete (SFRC). The usage of such fibres has been extensive and enormously successful as the steel fibres provide not only increments in tensile and flexural strength alike but also in shear strength [1,2]. Moreover, the ductility of the material is greatly enhanced.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Versatility of Multi-Linear Softening Functions Applied in the Simulation of Fracture Behaviour of Fibre-Reinforced Cementitious Materials

Enfedaque

Alberti

2019

Materials

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Fibre-reinforced cementitious materials (FRC) have become an attractive alternative for structural applications. Among such FRC, steel- and polyolefin fibre-reinforced concrete and glass fibre-reinforced concrete are the most used ones. However, in order to exploit the properties of such materials, structural designers need constitutive relations that accurately reproduce FRC fracture behaviour. This contribution analyses the suitability of multilinear softening functions combined with a cohesive crack approach for reproducing the fracture behaviour of the FRC mentioned earlier. The performed implementation accurately simulated fracture behaviour, while being versatile, robust, and efficient from a numerical point-of-view.

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Assessment of the shear behaviour of polyolefin fibre reinforced concrete and verification by means of digital image correlation

Cited by 37 publications

References 36 publications

Synergistic Influences of Stearic Acid Coating and Recycled PET Microfibers on the Enhanced Properties of Composite Materials

Synergistic Influences of Stearic Acid Coating and Recycled PET Microfibers on the Enhanced Properties of Composite Materials

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

Analysis of the Versatility of Multi-Linear Softening Functions Applied in the Simulation of Fracture Behaviour of Fibre-Reinforced Cementitious Materials

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