Investigation of flexural behavior of 3D textile reinforced concrete using both experimental tests and finite element method

Abdellahi, Sayyed Behzad; Hejazi, Sayyed Mahdi; Hasani, Hossein

doi:10.1177/1099636216665300

Cited by 10 publications

(8 citation statements)

References 23 publications

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“…Thus, using a numerical model to predict the mechanical behavior of knitted fabrics under different load conditions is considered by researchers to achieve a better performance structure [19]. Various studies have been focused on modeling and simulating the mechanical performance of textile reinforced composites [20][21][22][23]. Multi-scale finite element modeling is one of the methods used to model and predicts the mechanical behavior of textile composites by some researchers [24,25].…”

Section: Introductionmentioning

confidence: 99%

The effect of loop density on the tensile behavior of biaxial weft knitted composites using both experimental tests and numerical method

Hessami

Yazdi

Mazidi

2019

Journal of Industrial Textiles

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In this study, a high-tenacity polyester was used to produce biaxial weft knitted fabric in three different loop densities. All of the composite samples were manufactured using the vacuum injection process. Epoxy resin was used as the matrix in the composite samples. Tensile tests in the course and wale directions were carried out on all samples. The results showed that the tensile strength and the elastic modulus of the composites were improved by increasing the loop density. On the other hand, multi-scale finite element modeling was employed to predict the elastic constants and the tensile strength of the composites. In this method, unit-cells of biaxial weft knitted fabrics with a script were modeled by ABAQUS finite element software in the meso scale. Periodic boundary conditions were applied to the unit-cells. Stiffness matrices of composites were calculated by a python code. In the macro model, a shell geometry was created and the elastic constants calculated from the meso scale were assigned to the macro model. The tensile strength of composites in the course and wale directions was predicted by the Tsai-Wu failure criterion equations. The numerical results had a good agreement with the experimental ones. According to the numerical results, the difference in the loop densities as the inputs data could be used and elastic constants and strength of composites in the course and wale directions could be obtained. So, this model is a useful method to predict the tensile behavior of biaxial weft knitted composites with different geometries.

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Section: Introductionmentioning

confidence: 99%

The effect of loop density on the tensile behavior of biaxial weft knitted composites using both experimental tests and numerical method

Hessami

Yazdi

Mazidi

2019

Journal of Industrial Textiles

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“…Textile reinforced cementitious composites (TRC) has various outstanding properties such as larger load-bearing capacity, excellent ductility, thinner thickness, light-weight of components, resistance to corrosion and no magnetic disturbances [1][2][3][4][5]. Textile as reinforcement can significantly improve tensile strength of cementbased material.…”

Section: Introductionmentioning

confidence: 99%

Lattice modeling for the influence of geometrical patterns of 3D spacer fabric on tensile behavior of concrete canvas

Zhang

Chen

et al. 2021

Jnl of Sandwich Structures & Materials

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Tensile behavior of concrete canvas (CC) mainly depends on the geometric patterns of 3D spacer fabric. A lattice model is proposed to model the three-dimensional structure of CC to investigate the influence of geometric patterns of 3D spacer fabric on the tensile behavior of CC. The stress intensity factor is also applied into the lattice model to study the crack development of CC subjected to tensile load. The simulation results are compared to the experiments to verify the model. Finally, the influence of geometric pattern of outer layer and spacer yarns on tensile behavior of CC are simulated based on our proposed lattice model. The results indicate that the tensile strength of CC increases as the loop unit size of outer surface decreases or the amount of spacer yarns increases; the tensile strength of CC with rhombus loop unit of outer surface layer is higher than that of CC with rectangle loop unit. The tensile strength of CC significantly increases with the increasing inclination angle of spacer yarns in 3D spacer fabric. Furthermore, CC specimens subjected to uni-axial tensile exhibit a multi-cracking behavior, the average crack spacing of specimen decreases with the decreasing inclination angle of spacer yarns in tensile direction.

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“…Three-dimensional fabric acts as a reinforcing component that significantly improves the tensile strength. In addition to the type of fibers, the structure of the textiles, including yarn density, loop structures [37], 3D fabric thickness, density [38], and the placement angle of monofilament spacer yarns [9,39], count and Young's modulus of yarns [40] can significantly affect the reinforcement. Hesami et al [41] found that some energy is absorbed if the loops are easily displaced and deformed by any applied force.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Tensile Performance of Aluminate Cement Composite Reinforced with Weft Knitted Fabrics as a Function of Curing Temperature

et al. 2021

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Cement composites (CC) are among the composites most widely used in the construction industry, such as a durable waterproof and fire-resistant concrete layer, slope protection, and application in retaining wall structures. The use of 3D fabric embedded in the cement media can improve the mechanical properties of the composites. The use of calcium aluminate cement (CAC) can accelerate the production process of the CC and further contribute to improving the mechanical properties of the cement media. The purpose of this study is to promote the use of these cementitious composites by deepening the knowledge of their tensile properties and investigating the factors that may affect them. Therefore, 270 specimens (three types of stitch structure, two directions of the fabric, three water temperature values, five curing ages, with three repetitions) were made, and the tensile properties, absorbed energy, and the inversion effects were evaluated. The results showed that the curing conditions of the reinforced cementitious composite in water with temperature values of 7, 23, and 50 °C affect the tensile behavior. The tensile strength of the CCs cured in water with a temperature of 23 °C had the highest tensile strength, while 7 and 50 °C produced a lower tensile strength. The inversion effect has been observed in CC at 23 °C between 7 and 28 days, while this effect has not occurred in other curing temperature values. By examining three commercial types of stitches in fabrics and the performance of the reinforced cementitious composites in the warp direction, it was found that the structure of the “Tuck Stitch” has higher tensile strength and absorbed energy compared to “Knit stitch” and “Miss Stitch”. The tensile strength and fracture energy of the CC reinforced with “Tuck Stitch” fabric in the warp direction, by curing in 23 °C water for 7 days, were found to be 2.81 MPa and 1.65 × 103 KJ/m3, respectively. These results may be helpful in selecting the design and curing parameters for the purposes of maximizing the tensile properties of textile CAC composites.

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Investigation of flexural behavior of 3D textile reinforced concrete using both experimental tests and finite element method

Cited by 10 publications

References 23 publications

The effect of loop density on the tensile behavior of biaxial weft knitted composites using both experimental tests and numerical method

The effect of loop density on the tensile behavior of biaxial weft knitted composites using both experimental tests and numerical method

Lattice modeling for the influence of geometrical patterns of 3D spacer fabric on tensile behavior of concrete canvas

Experimental Evaluation of Tensile Performance of Aluminate Cement Composite Reinforced with Weft Knitted Fabrics as a Function of Curing Temperature

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