Mechanical properties of concrete reinforced with corrugated steel fiber under uniaxial compression and tension

Ran, Jinlin; Li, Tingchun; Chen, Dianhao; Shang, Liming; Li, Weiteng; Zhu, Qingwen

doi:10.1016/j.istruc.2021.08.135

Cited by 47 publications

(9 citation statements)

References 29 publications

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“…Commercial corrugated type steel fibers 20x1.2x0.5 mm 3 in size (WCR, Shanghai Shwitcom, China) were employed for the HM samples. These fibers presented one rough surface and one smooth surface, resulting in a large interface area between the fiber and the castable [23]. 3 wt% of steel fibers were incorporated into the castable as reinforcement in the HM samples.…”

Section: Methodsmentioning

confidence: 99%

Mullite macro-needles for reinforcement of refractory castables

et al. 2022

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Ceramic macro-needles incorporation as reinforcement in commercial refractory castable was studied. Ceramic macro-needles (Ø2x20 mm) were made from kaolinite clay and gibbsite to obtain mullite as the main crystalline phase. Specimens with the ceramic reinforcement were evaluated by compression after being treated at two temperatures (815 and 1400 °C). The results were compared with those obtained using the same commercial concrete but reinforced with steel fibers and without reinforcement. Compression values presented by specimens with ceramic macro-needles were 74% and 50% higher than specimens with steel fibers after exposition to 815 and 1400 °C, respectively. Based on these results, it was established that ceramic macro-needles are a feasible solution to improve the mechanical resistance of castables exposed to high temperatures.

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Section: Methodsmentioning

confidence: 99%

Mullite macro-needles for reinforcement of refractory castables

et al. 2022

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“…Domestic scholars on the mechanical properties of cyclic loading concrete are relatively backward, but with the development of civil engineering in recent years, the use of cyclic loading on the mechanical properties of concrete research boom. Reference [21] studied the uniaxial tensile properties of concrete under the action of variable amplitude cyclic load and carried out the uniaxial dynamic tensile test of concrete on 76 dumbbell-shaped specimens with MTS 318 electro-hydraulic servo universal testing machine. e results show that the dynamic strength of concrete mainly depends on the maximum loading rate within each cycle, and the influence of cyclic increase is relatively small.…”

Section: Related Workmentioning

confidence: 99%

Concrete Interface Feature Extraction and Stability Analysis Based on PCA Model

Zhao

Yin

et al. 2022

Mathematical Problems in Engineering

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With the rise of concrete pumping construction technology, high-mobility concrete has been more and more widely used. However, high fluidity concrete is prepared with high sand ratio and small stones, which weakens the volume stability of aggregate as a skeleton. Therefore, instability often appears in the practical application of large concrete. At present, the research on the stability of concrete interface feature extraction is still relatively scarce. In this paper, through a large number of experiments, the law of the main performance of concrete is systematically studied, and the characteristics of concrete interface are extracted using the principal component analysis (PCA) model. On this basis, the influence of different factors on the stability of concrete is studied, especially the compressive strength, volume stability, and durability of concrete. The experimental results will have a good reference value and far-reaching significance for improving the application status of high fluidity concrete.

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“…Concrete structures are currently the most important structures in the construction industry. Improving the mechanical properties of reinforced concrete structures is always a hot research eld [1][2][3][4][5]. Shear design is an important aspect in concrete structure design for preventing shear failure, which may cause instantaneous brittle failure; the damage incurred is severe and can result in catastrophic consequences.…”

Section: Introductionmentioning

confidence: 99%

“…(3) e shear failure of the VPSBs involved primarily two stages. (i) Stage i: shear resistance was primarily provided by the vertical compressive stress generated by the VPSBs on the beam body in the early stage of loading, and the vertical compressive stress effectively suppressed the occurrence and development of cracks.…”

mentioning

confidence: 99%

Strengthening Shear Resistance of Beams without Web Reinforcements Using Vertical Prestressed Steel Bars

Liu¹,

Cui

Wang

et al. 2022

Advances in Materials Science and Engineering

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Ensuring the shear capacity of concrete structures is crucial. The vertical prestressed steel bar (VPSB) strengthening method is effective for improving the shear behaviour of concrete structures. Four concrete beams are investigated to reveal the effect of VPSBs on the shear capacity of concrete beams without web reinforcement. Test results indicate that the shear capacity of the test beam strengthened by VPSBs in the beam is significantly increased by more than 95%, and the failure mode of the test beam changes from diagonal tension failure to shear compression failure. Additionally, the results provide insights into the strengthening mechanism of VPSBs, i.e., the shear contribution of the VPSBs can be categorised into two stages. The vertical compressive stress provides shear contribution in the first stage and provides control in terms of crack development; meanwhile, in the second stage, the stirrup action by VPSBs contributes to shear.

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Mechanical properties of concrete reinforced with corrugated steel fiber under uniaxial compression and tension

Cited by 47 publications

References 29 publications

Mullite macro-needles for reinforcement of refractory castables

Mullite macro-needles for reinforcement of refractory castables

Concrete Interface Feature Extraction and Stability Analysis Based on PCA Model

Strengthening Shear Resistance of Beams without Web Reinforcements Using Vertical Prestressed Steel Bars

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