Experimental and numerical investigation of the effect of steel fibres on the deflection behaviour of reinforced concrete beams without stirrups

Tahenni, Touhami; Bouziadi, Farid; Boulekbache, Bensaid; Amziane, Sofiane

doi:10.1016/j.istruc.2021.05.005

Cited by 16 publications

(8 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To simulate the nonlinear response of concrete, various material parameters are required in the NLFEA ANSYS © code, including multilinear isotropic stress–strain curve, linear isotropic material properties such as elastic modulus and Poisson’s ratio, and parameters of cracking and crushing of concrete (failure criteria properties for concrete/failure criteria parameters of the Willam and Warnke model). 71,72…”

Section: Nonlinear Finite-element Model Developmentmentioning

confidence: 99%

“…In this study, surface-to-surface contact is created by assuming that the support plates and loading plate are rigid. 71…”

Section: Nonlinear Finite-element Model Developmentmentioning

confidence: 99%

“…To simulate the nonlinear response of concrete, various material parameters are required in the NLFEA ANSYS © code, including multilinear isotropic stress-strain curve, linear isotropic material properties such as elastic modulus and Poisson's ratio, and parameters of cracking and crushing of concrete (failure criteria properties for concrete/failure criteria parameters of the Willam and Warnke model). 71,72 Many investigations have been conducted to describe uniaxial stress-strain relationships (multilinear isotropic stress-strain curve) in concrete under compression. The resulting models include the Hognestad parabola model, 24 Desayi and Krishnan law, 14 Popovics stressstrain curve, 50 Vecchio and Collins plot, 24 Hsu law, 24 Drucker-Prager model, 70 modified Hognestad law and simplified modified Hognestad plot.…”

Section: Concretementioning

confidence: 99%

“…In this study, surface-to-surface contact is created by assuming that the support plates and loading plate are rigid. 71 Furthermore, the contact between the beam substrate and the loading and support plates is created using a friction coefficient of 0.05; the penetration tolerance and normal penalty stiffness are 0.0001 and 1.0 (N/mm 3 ), respectively. A small gap is selected for the initial default contact setting.…”

Section: Finite-element Simulationmentioning

confidence: 99%

See 3 more Smart Citations

Development of a local bond shear stress-slip model of RC beams externally strengthened with FRP materials

Bouziadi

Haddi

Tahenni

et al. 2023

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

This paper presents an analysis of the numerical investigation of RC beams, strengthened with CFRP and tested in flexure, using the ANSYS© numerical analysis code. In the first part of this paper, finite-element models of RC beams (control and CFRP-strengthened), subjected to four-point bending, are developed based on experimental tests as reported in the literature. Then, a 3D nonlinear finite-element analysis (NLFEAs) with perfect bonding, along with 12 cohesive zone material (CZM) models proposed by researchers in literature, are explored to simulate the behaviour of CFRP-strengthened RC beams. In the second part of this work, the compressive strength of the concrete and the elastic modulus of the epoxy resin are examined to study their effect on the same CFRP-strengthened RC beam. On the basis of those two studies, a bilinear CZM model is modified to predict the behaviour of RC beams strengthened with FRP materials, and interfacial shear debonding phenomena. The modified CZM model is verified against a database of experimental results that includes 23 RC beams, strengthened with FRP tested in flexure, with different concrete compressive strength, FRP modulus of elasticity and resin elastic modulus. The experimental and predicted ultimate loads are compared to verify the accuracy of the modified CZM model. The level of fitness between the modified CZM model and experimental results is elaborated with statistical metrics such as integral of the absolute error (IAE), root mean square error (RMSE) and coefficient of determination (R2). The results show good agreement between the experimental and predicted ultimate loads.

show abstract

Section: Nonlinear Finite-element Model Developmentmentioning

confidence: 99%

“…In this study, surface-to-surface contact is created by assuming that the support plates and loading plate are rigid. 71…”

Section: Nonlinear Finite-element Model Developmentmentioning

confidence: 99%

Section: Concretementioning

confidence: 99%

Section: Finite-element Simulationmentioning

confidence: 99%

See 2 more Smart Citations

Development of a local bond shear stress-slip model of RC beams externally strengthened with FRP materials

Bouziadi

Haddi

Tahenni

et al. 2023

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…As a result, adding fibers to the concrete mixture may be viable for achieving the desired qualities. Tahenni et al [ 10 ] reported that the steel fibers do not significantly alter ordinary concrete’s compressive strength or modulus of elasticity. This improvement is especially noticeable when the fiber content (2% for plain concrete) is increased.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

2022

View full text Add to dashboard Cite

Preplaced aggregate fibrous concrete (PAFC) is a revolutionary kind of concrete composite that is gaining popularity and attracting the interest of academics from across the world. PAFC is a uniquely designed concrete prepared by stacking and packing premixed fibers and coarse aggregate in a steel mold. The gaps between the fibers and aggregates are subsequently filled by injecting a cement grout with high flowability. This study investigates the impact performance of three different sizes of PAFC beams. Steel and polypropylene fibers were used in a 3% dosage to make three different beam sizes, measuring 550 × 150 × 150 mm, 400 × 100 × 100 mm, and 250 × 50 × 50 mm. According to ACI Committee 544, all beams were subjected to a drop weight flexural impact test. Compressive strength, impact energies at initial crack and failure, ductility index, and failure mode were evaluated. Additionally, analytical modeling was used to compute the failure impact energy for the fibrous beams. The results showed that the addition of fibers increased the capacity of the tested beams to absorb greater flexural impact energy. Compared to polypropylene fibers, steel fibers had better crack propagation and opening resistance because of their higher tensile strength and crimped and hooked end configuration. For all large-size beams, the analysis of the percentage increase in impact energy at the failure stages was found to be 5.3 to 14.6 times higher than the impact energy at cracking.

show abstract

Research on different types of fiber reinforced concrete in recent years: An overview

Zhao

Wang

Zhu

et al. 2023

Construction and Building Materials

108

View full text Add to dashboard Cite

Experimental and numerical investigation of the effect of steel fibres on the deflection behaviour of reinforced concrete beams without stirrups

Cited by 16 publications

References 40 publications

Development of a local bond shear stress-slip model of RC beams externally strengthened with FRP materials

Development of a local bond shear stress-slip model of RC beams externally strengthened with FRP materials

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

Research on different types of fiber reinforced concrete in recent years: An overview

Contact Info

Product

Resources

About