Numerical study of the compressive behavior of concrete material at high strain rate with active confinement

Chen, Zhong; Hao, Yifei; Hao, Hong

doi:10.1177/1369433219841174

Cited by 17 publications

(12 citation statements)

References 42 publications

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“…The previous studies have shown that the mechanical failure and damage features of concrete in the two cases were different [2,16]. In the dynamic loading case, finding suitable model with the dynamic behavior and depends on the strain rate is attractive [17][18][19][20]. Many related studies have been conducted in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…However, up to now, there is no study that has evaluated the best DIF curve in the related works. The value of DIF still depends on the specific problems [2,20,[27][28][29]. In this paper, the DIF curve is employed from MC2010 to establish the stress-strain curves in compression and tension of high-strength concrete in case of dynamic loading.…”

Section: Introductionmentioning

confidence: 99%

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A concrete damage plasticity model for predicting the effects of compressive high-strength concrete under static and dynamic loads

Minh

Khatir

Wahab

et al. 2021

Journal of Building Engineering

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A concrete damage plasticity model for predicting the effects of compressive high-strength concrete under static and dynamic loads

Minh

Khatir

Wahab

et al. 2021

Journal of Building Engineering

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“…The method covers the destroyed reinforced concrete beams with the new reinforcement and concrete; thus, it is referred to as reinforced concrete jacketing [2]. Effectiveness of this technique is directly associated with the monolithic behavior of the composite elements; thus, the treatment of the interfaces should be carefully executed [11]. The fusion of the new concrete layers with the old surface can be enhanced by roughening the concrete segments and the epoxy resin used.…”

Section: ) Concrete Jacketingmentioning

confidence: 99%

“…The fusion of the new concrete layers with the old surface can be enhanced by roughening the concrete segments and the epoxy resin used. In some instances, steel connectors might be applied to substitute the dowel bars [11]- [17]. To decrease the thickness of the sheath, greater strength concrete is recommended [7].…”

Section: ) Concrete Jacketingmentioning

confidence: 99%

“…Other confining materials have been evaluated for the possibility of their use in repairing damaged concrete [14]. For instance, the application of prestressed external confinement using CFRP bands and steel bands proved promising, especially in enhancing the seismic capacity of concrete beams [11]. Rousakis et al evaluated the effectiveness of high tension capacity fiber cables as a form of external confinement of RC beams, where the results demonstrated a satisfactory performance under loading with immense pretension levels [15].…”

Section: ) Other Confining Techniquesmentioning

confidence: 99%

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The Structural Impact of Confinement in the Rehabilitation of Reinforced Concrete Beams

AL-Asadi¹

2019

Journal of Southwest Jiaotong University

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Confinement is shown to be effective in restoring the initial operating capacity to the damaged concrete. However,a lack of set guidelines for design and implementation prevents it from successful implementation. In this paper, we reviewed the application of confinement in the rehabilitation of damaged concrete beams. The findings illustrate that confinement could be used as a repairing technique for damaged concrete members. The simulation analysis in ANSYS 16 helped evaluate the performance of the rehabilitated beam under stress and strain. The proposed method is shown to increase structural strength and ductility in the rehabilitated concrete beam.

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The influence from steel bar on concrete fracture behavior under different impact velocities

Song

Wang

Zhang

et al. 2021

Structural Concrete

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Three‐point bending tests on notched plain concrete beams and lightly reinforced concrete beams were carried out with a drop‐hammer impact instrument. The shape of the specimen followed the RILEM recommendation, that is, 150 mm × 150 mm in cross section, 800 mm in length, and span was kept constant 600 mm. And only one conventional steel bar was placed in the lightly reinforced concrete beam. The high‐speed camera and digital image correlation (DIC) technology were applied to catch the fracture process under dynamic loads. And the reaction force, mid‐span deflection, crack velocity, the horizontal strain of concrete at the notch root, and the strain of steel bar midpoint were measured over three impact velocities (i.e., 9.89 × 102, 1.71 × 103, and 2.21 × 103 mm/s). The test results showed that the dynamic fracture energy for plain concrete and reinforced concrete increased with the increase of the impact velocity. When the impact velocity reached 2.21 × 103 mm/s, the steel bar reached yielding, which resulted in the influence from reinforcement on fracture energy weakened. Both of the dynamic fracture toughness for plain concrete and lightly reinforced concrete increased linearly as the growth of impact velocity. Furthermore, the crack extended with a decreasing speed for plain concrete and reinforced concrete. And the first‐stage crack velocity in concrete was inhibited effectively by steel bar, but the inhibitory effect declined as the increase of impact velocities.

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Numerical study of the compressive behavior of concrete material at high strain rate with active confinement

Cited by 17 publications

References 42 publications

A concrete damage plasticity model for predicting the effects of compressive high-strength concrete under static and dynamic loads

A concrete damage plasticity model for predicting the effects of compressive high-strength concrete under static and dynamic loads

The Structural Impact of Confinement in the Rehabilitation of Reinforced Concrete Beams

The influence from steel bar on concrete fracture behavior under different impact velocities

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