Flexural cracking performance of strain-hardening cementitious composites with polyvinyl alcohol: Experimental and analytical study

Bai, Ru; Yan, Changwang; Ju, Zhang; Wang, Xiaoxiao

doi:10.1016/j.conbuildmat.2020.118110

Cited by 8 publications

(3 citation statements)

References 16 publications

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“…Nine beams (3*0%, 3*0.2%, and 3*0.4%) were designed for the experiment to compare the effect of the PP fiber volume fraction on the bending cracking of concrete beams. Some researchers 23,39 use the reinforcement ratio as a variable for analysis when studying the bending cracking mechanism of FRC beams. On the other hand, the calculation methods for the maximum crack width and crack spacing of RC beams based on the bond-slip theory and empirical methods in the Chinese standard (GB/T 50010-2010) 40 have become quite mature.…”

Section: Specimen Designmentioning

confidence: 99%

“…Xu et al 43 and Bai et al 39 modeled steel and PVA fibers to resist cracking from the bending perspective of the beam. Zhang et al 23 approximated the four‐point bending pure bending section as a uniaxial tensile model according to the relevant specification 40 and simplified the model calculation for calculating PVA fiber crack resistance by correcting the calculated results with coefficients.…”

Section: Pp‐frc Beam Bending Damage Theory Analysismentioning

confidence: 99%

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Study on bending failure and crack characteristics in ductile fiber‐reinforced concrete beams

Wang,

He,

Zhou

et al. 2024

Structural Concrete

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In this study, we designed six polypropylene fiber‐reinforced concrete (PP‐FRC) beams and three reinforced concrete (RC) beams for experimental studies. Then, we analyzed the effects of incorporating PP fibers on the cracking performance of PP‐FRC beams from the perspectives of load‐displacement response, crack distribution, crack depth, crack width, crack spacing, and deformation coordination. The research results showed that the cracking load and number of cracks were positively correlated with the volume ratio of PP fibers, while the maximum crack width, average crack spacing, and average crack depth were negatively correlated with the volume ratio of PP fibers. Due to the bridging effect of fibers, the PP‐FRC beam body and reinforcement could deform in a coordinated manner within a specific loading range after cracking, which increased the deformation coordination ability between the body and reinforcement. In this study, the cracking mechanism of PP‐FRC beams was investigated. Firstly, the formula for calculating the cracking moment of PP‐FRC beams was derived from the perspective of equivalent bending tensile strength. Then, based on the fiber bridging law and the bond strength between PP‐FRC and reinforcement, theoretical formulas were proposed to predict the average crack spacing and maximum crack width of PP‐FRC beams. Finally, through comparison, it was found that the proposed formulas could be used for characteristic crack prediction.

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Section: Specimen Designmentioning

confidence: 99%

Section: Pp‐frc Beam Bending Damage Theory Analysismentioning

confidence: 99%

Study on bending failure and crack characteristics in ductile fiber‐reinforced concrete beams

Wang,

He,

Zhou

et al. 2024

Structural Concrete

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“…Bai et al [8]designed five PVA-SHCC beams and two reinforced concrete beams and conducted concentrated load bending tests to study their cracking performance. The test results show the fiber cement-based composite material has excellent multi-crack development performance.…”

Section: Ecc Materialsmentioning

confidence: 99%

A Review of The Flexural Mechanical Properties Of ECC-Fiber Reinforced Composite Composite Reinforced Beams

2024

AJST

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Engineering fiber-reinforced cementitious composite (ECC) has good ductility and crack control ability, and fiber-reinforced polymer (FRP) has high bearing capacity. Combining the two can effectively enhance the flexural mechanical properties of reinforced concrete beams. This paper introduces ECC and fiber-reinforced composite materials, and the effects of this reinforcement method on cracks, deflection, and bearing capacity of reinforced concrete beams are reviewed.

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The Influence of Hybrid Fiber Ratio on the Mechanical Properties of Concrete

He,

Yu,

Chen

et al. 2024

Lecture Notes in Civil Engineering

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The concrete with different fibre and ratio can lead to different performance. This paper studies the mechanical properties of concrete by changing the ratio of PVA fibre and steel fibre. Three kinds of ratio of the PVA fibre and steel fibre are studied. They are 0% PVA fibre and 0% steel fibre, 0.25% PVA fibre and 0.75% steel fibre, 0.5% PVA fibre and 0.5% steel fibre. The compressive strength, flexural strength, bending toughness are tested. The test result shows that the compressive strength of the P0.25S0.75 increases. While the group of P0.5S0.5 shows a little range of decreasing. The 28d flexural strength of P0.25S0.75 and P0.5S0.5 increases 2.3 and 30.2% respectively. The loading-deflection curves of P0.25S0.75 and P0.5S0.5 all appear strain harden property. By the mixing amount of the PVA fibre increasing, the cracking strength and limitation bearing ability can all be enhanced. The areas under the curve enlarge and the toughness of the concrete are enhanced. The bending toughness of P0.5S0.5 is much better than the P0.25S0.75 but the difference is not very large.

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Flexural cracking performance of strain-hardening cementitious composites with polyvinyl alcohol: Experimental and analytical study

Cited by 8 publications

References 16 publications

Study on bending failure and crack characteristics in ductile fiber‐reinforced concrete beams

Study on bending failure and crack characteristics in ductile fiber‐reinforced concrete beams

A Review of The Flexural Mechanical Properties Of ECC-Fiber Reinforced Composite Composite Reinforced Beams

The Influence of Hybrid Fiber Ratio on the Mechanical Properties of Concrete

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