Investigation of flexural performance of concrete reinforced with indented and fibrillated macro polypropylene fibers based on numerical and experimental comparison

Rostami, Rouhollah; Zarrebini, Mohammad; Abdellahi, Sayyed Behzad; Mostofinejad, Davood; Abtahi, Sayyed Mahdi

doi:10.1002/suco.201900374

Cited by 12 publications

(15 citation statements)

References 29 publications

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“…The flexural strength increased the maximal 31% for a fiber dosage of 25 kg/m 3 in comparison to the plain concrete. Rostami et al [64] reported that the highest flexural strength was 94% relative to the control sample. Such a large difference may be due to the length of the polypropylene fiber.…”

Section: Discussionmentioning

confidence: 96%

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: Discussionmentioning

confidence: 96%

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

et al. 2021

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“…As alternative to SFRC, the use of polypropylene macrofibers (PPF) as concrete reinforcement (PPFRC) is experiencing a noticeable increase over the last two decades. [19][20][21] PPFs were reported to present several technical advantages: inert against chloride and chemical attacks to which concrete structures can be subjected; less impact in the concrete workability due to the flexibility of the fiber; lower risk of injuries during manipulation and handling owe also to this flexibility. [22][23][24] In view of that, the use of PPFs is a suitable alternative as a partial or even total substitute of the steel-cage traditionally used in RCPs.…”

Section: Introductionmentioning

confidence: 99%

Basalt‐polypropylene fiber reinforced concrete for durable and sustainable pipe production. Part 2: Numerical and parametric analysis

Deng

Liu

Chen

et al. 2021

Structural Concrete

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A nonlinear 3D FEM was developed for reproducing the three‐edge bearing test (TEBT) of pipes. The model was validated by considering the experimental results on standard reinforced concrete pipes (RCPs) and fiber‐reinforced concrete pipes (FRCPs) with 1000 mm internal diameter presented in the Part 1. The relative error between numerical simulation and laboratory test results for both the service (D0.3) and the ultimate (Du) D‐load (DL) were lesser than 2.1% and 6.3%, respectively. Additionally, a new structural design process that takes into consideration the geometric and mechanical variables involved into the TEBT of pipes, including the type and reinforcement configuration, is proposed. Because of applying this approach, design‐oriented tables with minimum steel‐cage reinforcement ratios for RCPs and FRCPs valid for pipes with inner diameters ranging from 300 mm to 1800 mm are established for the pipe strength classes I to V and wall thickness A, B, and C defined in the ASTM C76. Based on the numerical results, it can be confirmed that the hybrid use of basalt‐polypropylene fibers permits to reduce the steel reinforcement ratio respect to the equivalent RCP and, for some diameters and strength classes, the total elimination. These results represent a step forward in the use of fiber reinforced concrete in the pipe industry, which can lead to more durable and sustainable piping products.

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“…In this method, a unit-cell of the composite is modeled at the meso scale, and the essential parameters are extracted from the meso model. 19,20 Recently, researchers have used Vassiliadis et al's 15 model to create weft-knitted loop geometry at the meso scale. 7,9,[21][22][23] In this model, the geometry of the weft-knitted loop based on the coordinate points of the loop geometry is created in a three-dimensional space.…”

Section: Introductionmentioning

confidence: 99%

Multi-scale finite element modeling of bending behavior of 3D multi-cell spacer weft-knitted composites with different structures

Yang

Eskenati

2021

Polymers and Polymer Composites

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In the present study, a multi-scale finite element model is proposed to predict the linear and nonlinear behavior of the 3D multi-cell spacer weft-knitted composite under bending load. In this study, a unit-cell of the composite which includes plain and biaxial weft-knitted structures was modeled at the meso scale. Periodic boundary conditions were applied to the meso model to calculate the elastic constants of each composite structure. In order to obtain failure parameters of the composites, the Puck failure criterion model was utilized by a VUMAT code for the meso model. Afterward, the elastic constants of the composites based on a Python code were extracted from the meso model. Moreover, failure parameters that include tensile and compressive strength through the fiber and transverse directions were obtained from the meso model. All elastic and failure parameters were used for the macro model which is created with different profiles under bending load. The numerical results at the meso scale showed that the presence of the weft and warp yarns inside the biaxial weft-knitted composite increases the strength of the composite through the course and wale directions. Moreover, the stiffness of the composite would be improved. So, the samples that contained a biaxial composite had more stiffness and bending strength in comparison with plain composite samples because the top and bottom layers were manufactured by the biaxial weft-knitted structure. Besides, the comparison between numerical and experimental force–deflection curves showed that the proposed model could predict the linear and nonlinear behavior of the composites with high accuracy. So, this model can be used for other textile composites with complex shapes to predict the mechanical behavior of them.

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Investigation of flexural performance of concrete reinforced with indented and fibrillated macro polypropylene fibers based on numerical and experimental comparison

Cited by 12 publications

References 29 publications

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

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

Basalt‐polypropylene fiber reinforced concrete for durable and sustainable pipe production. Part 2: Numerical and parametric analysis

Multi-scale finite element modeling of bending behavior of 3D multi-cell spacer weft-knitted composites with different structures

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