Improving the Reinforcement of Polyolefin Fiber Reinforced Concrete for Infrastructure Applications

Alberti, Marcos García; Enfedaque, Alejandro; Gálvez, Jaime C.

doi:10.3390/fib3040504

Cited by 31 publications

(20 citation statements)

References 13 publications

(20 reference statements)

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“…Focusing on polyolefin fibres manufactured to reinforce concrete elements, recent developments have allowed the plastic industry to obtain polyolefin-based synthetic macro-fibres with improved mechanical properties. This type of fibres has become an alternative to steel fibres, as research has shown in various applied studies (23,32) and research publications (22,31,(39)(40). As the importance of the material durability has emerged, some additional properties of polyolefin fibres have given rise to certain advantages in the construction field if compared with steel fibres.…”

Section: Overview Of Polyolefin Fibresmentioning

confidence: 99%

“…This shows one of the future lines to improve the use of fibres in the construction field: the search for the appropriate fibre cocktail for each application. These combinations have been used to reduce the amount of steel (and seeking a more sustainable concrete design) (91) and obtain improved FRC mechanical properties in certain applications (40).…”

Section: Polyolefin Fibres Combined Steel Fibresmentioning

confidence: 99%

“…Fracture results of the combination of steel hooked fibres and polyolefin fibre and the sum of the residual contributions of mono-fibre-reinforced mixtures. Adapted from:(40).…”

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confidence: 99%

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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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Section: Overview Of Polyolefin Fibresmentioning

confidence: 99%

Section: Polyolefin Fibres Combined Steel Fibresmentioning

confidence: 99%

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

Alberti

Enfedaque

Iranzo³

2020

Mater. construcc.

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“…With the development of deep research on nanoparticles and the gradual reduction in manufacturing costs for nanoparticles [33], nanoparticles have been gradually extended to the application of civil engineering owing to their characteristic nano effects [34]. Simultaneously, fiber-reinforced composites are also widely used in the construction and building industry, such as plastic fibers as the only reinforcement for flat suspended slabs [35] and polyolefin fiber-reinforced concrete for infrastructure applications [36,37]. However, currently, systematic studies on PVA fiber-reinforced cementitious composites containing nano-SiO 2 are very rare.…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength Prediction of PVA Fiber-Reinforced Cementitious Composites Containing Nano-SiO2 Using BP Neural Network

et al. 2020

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In this study, a method to optimize the mixing proportion of polyvinyl alcohol (PVA) fiber-reinforced cementitious composites and improve its compressive strength based on the Levenberg-Marquardt backpropagation (BP) neural network algorithm and genetic algorithm is proposed by adopting a three-layer neural network (TLNN) as a model and the genetic algorithm as an optimization tool. A TLNN was established to implement the complicated nonlinear relationship between the input (factors affecting the compressive strength of cementitious composite) and output (compressive strength). An orthogonal experiment was conducted to optimize the parameters of the BP neural network. Subsequently, the optimal BP neural network model was obtained. The genetic algorithm was used to obtain the optimum mix proportion of the cementitious composite. The optimization results were predicted by the trained neural network and verified. Mathematical calculations indicated that the BP neural network can precisely and practically demonstrate the nonlinear relationship between the cementitious composite and its mixture proportion and predict the compressive strength. The optimal mixing proportion of the PVA fiber-reinforced cementitious composites containing nano-SiO2 was obtained. The results indicate that the method used in this study can effectively predict and optimize the compressive strength of PVA fiber-reinforced cementitious composites containing nano-SiO2.

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“…In the fourth group of papers investigating new FRP materials synergies, Alberti et al [11] studied the ability of polyolefin fiber reinforced concrete (PFRC) to improve residual strength following small deformations through a combined use of long, macro-synthetic polyolefin fibers and short, steel-hooked fibers. This combination maintained high-performance properties and reliable fracture behavior and increased the fracture energy of plain concrete 38 times.…”

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confidence: 99%

FRP for Infrastructure Applications: Research Advances

Taha

2017

Fibers

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Driven by the incentive to break the infrastructure corrosion cycle, fiber reinforced polymers (FRP) composites were introduced as potential materials to produce corrosion-free infrastructure [1]. FRP were also sought to create a new generation of smart infrastructure where performance monitoring can be integrated in structural design and construction [2]. The widespread production of synthetic fibers, including glass fibers, carbon fibers and Kevlar fibers, enabled the creation of FRP composites with much improved mechanical and durability performances for infrastructure applications compared with classical construction [3]. Research and development over the past 40 years has addressed practical challenges for enabling the use of FRP materials in infrastructure applications [4]. In this Special Issue of Fibers, nine publications are dedicated to reporting progress in research examining the use of FRP in infrastructure applications. The reported papers can be classified into four categories addressing: innovative structural systems using FRP, improving energy dissipation in infrastructure using FRP, methods for computational simulation of structural elements using FRP and finally new FRP materials synergies for infrastructure applications.The first group of papers in the Special Issue reported innovative FRP structural systems. Rasheed et al. [5] investigated failure modes and flexural capacity in concrete T and rectangular beams with transverse U-wrapped carbon fiber reinforced polymer (CFRP) anchorage in addition to externally bonded sheets of flexural CFRP. Results showed that this combination shifted the failure mode from the original debonding to flexural failure and, thus, provided higher flexural capacity by delaying delamination and debonding in the flexural CFRP sheets and by providing anchorage through shear friction. Moreover, Al-Rahmani and Rasheed [6] proposed covering rectangular concrete columns with FRP wrap. The authors showed that the pairing of FRP confinement with steel ties confinement required nonlinear analysis for the determination of axial capacities. A parametric study was performed which showed that the dual confinement system increased the axial capacity by 21% and 11% compared to the steel-only and FRP-only columns, respectively.The second group of articles examined the possible use of FRP to improve energy dissipation in infrastructure application. Dezfuli and Alam [7] studied the response of 1/4-scale carbon fiber reinforced elastomeric isolators (FREIs) exposed to cyclic loading. Results showed that lateral flexibility and damping capacity were both increased by decreasing the cyclic loading rate, while vertical pressure had no effect on the lateral response of the system. The equivalent damping ratio increased from 9.1 to 13.2% when the rubber thickness doubled from 12 mm to 24 mm. By doubling the amount of rubber layers from 8 to 16, a decrease of 60% was observed in the effective horizontal stiffness and an increase of 22% was observed in the equivalent viscous damping at 100%...

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Improving the Reinforcement of Polyolefin Fiber Reinforced Concrete for Infrastructure Applications

Cited by 31 publications

References 13 publications

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

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

Compressive Strength Prediction of PVA Fiber-Reinforced Cementitious Composites Containing Nano-SiO2 Using BP Neural Network

FRP for Infrastructure Applications: Research Advances

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