Effect of the Notch-to-Depth Ratio on the Post-Cracking Behavior of Steel-Fiber-Reinforced Concrete

Aguilar, José Valdez; Juárez-Alvarado, César A.; Mendoza-Rangel, J. M.; Terán-Torres, Bernardo T.

doi:10.3390/ma14020445

Cited by 8 publications

(2 citation statements)

References 40 publications

(46 reference statements)

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“…The performance of the bio-based repair mortar was studied through restrained shrinkage and pull-out tests [25]. Valdez Aguilar et al (2021) [23] presented a detailed review on the various types of bacteria used for healing concrete and discussed the different concrete properties affected by the addition of bacteria. Vijay and Kunamineni et al (2019) [27] used cultured bacillus subtilis in spore powder form and culture form in mortar concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on Flexural Behavior of Concrete Beams Using Notches and Repair Materials

Khan,

Akhtar,

Rawat

et al. 2024

Sustainability

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In a concrete beam, cracking is generated on the tension side under the effect of flexure, shear, and torsional loadings. Accordingly, these weak concrete members require repair and/or strengthening to increase or restore their internal load capacity. In the current experimental and numerical investigations on concrete beams, the impact of using notches with different width to depth ratios on the ultimate flexural load under a three-point test was considered. Further, the flexural behavior performance of a notched concrete beam repaired using the three repair materials—cement mortar, bacterial mortar, and adhesive—was also examined. Consequently, a comparative study was implemented between the experimental and numerical results. A concrete damage plasticity (CDP) model was used for the finite element numerical analysis of the beams. The differences in numerical and experimental measured results ranged from 0.65 to 22.20% for the ultimate load carrying capacity. As the notch size increased, the ultimate load carrying capacity of the beam reduced. Additionally, a linear regression model was used to predict the ultimate load values at a notch width interval of 5 mm up to a maximum notch width of 100 mm. It was observed that the ultimate load capacity for a repaired beam increased as compared to the notched beam for all three repair materials under consideration. And the maximum ultimate load increased in the case of notched beams repaired using adhesive. Furthermore, in comparison to the cement mortar, the performance of the bacterial mortar in terms of the ultimate load was more. The bacterial mortar was found to be more sustainable and more durable as a repair material for concrete structures.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on Flexural Behavior of Concrete Beams Using Notches and Repair Materials

Khan,

Akhtar,

Rawat

et al. 2024

Sustainability

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“…12 Lacidogna et al 13 attempted to study damage in concrete beams using DIC technique. The influence of the notch-to-depth ratio on the postcracking behaviour of SFRC beams was investigated by Aguilar et al 14 Rao and Rao 15 reported the toughness indices of FRC subjected to mode II loading in a different investigation.…”

Section: Introductionmentioning

confidence: 99%

Statistics of acoustic emission waveforms in characterizing the fracture process zone in fibre-reinforced cementitious materials under mode I fracture

Sagar,

Saha,

Basu

et al. 2023

Structural Health Monitoring

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This article reports on the characteristics of fracture process zone in steel fibre-reinforced concrete (SFRC) under the mode I fracture process using acoustic emission (AE) testing. The generated AE waveforms during mode I fracture process in SFRC were recorded in the laboratory. Using a statistical analysis of AE waveforms, it was observed that as the loading increases, a damage zone consisting of numerous microcracks develops ahead of the predefined notch tip. The location of the generated AE events related to the numerous microcracks were classified into three zones namely (i) major damage, (ii) moderate damage and (iii) low damage. The areas of these regions were evaluated from the distribution of the AE events around the pre-notch. The number of AE events reduced with the increase in the steel fibre content under the same experimental conditions. The major damage zone was located ahead of the notch tip very closely and it comprised of AE events with (i) high peak amplitude, (ii) low information entropy and (iii) longer AE waveform duration.

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Effect of Notch-to-Depth Ratio and Steel Fiber Volume Fraction on Acoustic Emissions Generated During Mode I Fracture Process in Steel Fiber Reinforced Concrete

Samadhan

Sagar

2022

Recent Advances in Applied Mechanics

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Effect of the Notch-to-Depth Ratio on the Post-Cracking Behavior of Steel-Fiber-Reinforced Concrete

Cited by 8 publications

References 40 publications

Experimental and Numerical Study on Flexural Behavior of Concrete Beams Using Notches and Repair Materials

Experimental and Numerical Study on Flexural Behavior of Concrete Beams Using Notches and Repair Materials

Statistics of acoustic emission waveforms in characterizing the fracture process zone in fibre-reinforced cementitious materials under mode I fracture

Effect of Notch-to-Depth Ratio and Steel Fiber Volume Fraction on Acoustic Emissions Generated During Mode I Fracture Process in Steel Fiber Reinforced Concrete

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