Fracture Properties of Wide-notch Concrete Beams strengthened with Near-Surface Mounted CFRP Rebar

Ren, Zhenhua; Zeng, Xian‐Tao; Sun, Junbo; Wang, Jun

doi:10.1007/s12205-019-2373-3

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…e application of prestress reinforcement in a building structure improves the force performance of the original structure by enhancing crack resistance, structural carrying capacity, and durability [1][2][3]. Currently varying methods for the prestressed reinforcement of concrete columns are developed comprising prestressed rod, prestressed strip, and prestressed steel strand reinforcement methods [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Axial Compression of Reinforced Concrete Short Circular Columns Strengthened with Prestressed Semicircular Steel Plates

Ren

Shen

Zeng

et al. 2021

Advances in Civil Engineering

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According to the statistics of relevant departments, the total area of various existing buildings in China is at least 10 billion m2, of which about one-third of the houses have reached the design life and the safety reserve is insufficient. It is not economical to demolish these houses and rebuild them, and the benefits of new buildings are far less than those of extending the service life of old buildings through reinforcement. Therefore, reinforcement technology is increasingly indispensable. Currently varying methods for the prestressed reinforcement of concrete columns are developed, but they are generally not practical. Strengthening concrete columns with prestressed semicircular steel plate is a new prestressed strengthening technology. In this article, the experimental study on the axial compression of a reinforced concrete circular section short column strengthened with prestressed semicircular steel plate is carried out by combining experimental and numerical simulation methods, and the calculation formula of the bearing capacity of the reinforced short column is established by finite element analysis.

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Section: Introductionmentioning

confidence: 99%

Experimental Research on Axial Compression of Reinforced Concrete Short Circular Columns Strengthened with Prestressed Semicircular Steel Plates

Ren

Shen

Zeng

et al. 2021

Advances in Civil Engineering

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“…e calculation methods for crack spacing of the RC beam section are mature, including the bond slip method, the no sliding method, and analysis by synthesis. In addition, there is a widely used unified specification for crack spacing on the surface of RC beams in China based on the first three methods [13,14].…”

Section: Introductionmentioning

confidence: 99%

A Prediction Model for Concrete Cracks due to Chloride‐Induced Corrosion

Wang

Zhang

et al. 2020

Advances in Materials Science and Engineering

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The nonhomogeneity of concrete leads to randomness in the development and extension of cracks. Scholars have proposed different models to analyze the development of cracks. Different from existing works on crack development, in this paper, we establish a crack spacing model on the basis of the mechanical equilibrium relation of differential elements. We also establish a mechanical equilibrium model considering that the shrinkage of concrete is constrained by the bonding force of reinforced concrete. Then, on the basis of the equilibrium condition, we propose an analytical model of spacing between the first crack and the second crack at the interface of steel and concrete due to corrosion expansion. This calculation model has only three variables: tensile strength, effective constraint length of the reinforcement, and bond force. In addition, the parameters are clearly defined. We verified the development of cracks at the interface between steel bar and concrete under chloride corrosion at different locations in a steel bar by comparing it with existing simulations and experimental results. The analytical model proposed in this paper has an accuracy of 92%, indicating that our expression for crack spacing can effectively predict the location of cracks.

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Effectiveness of geopolymer in the strengthening of RC beams using bottom NSM reinforcements

2023

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Fracture Properties of Wide-notch Concrete Beams strengthened with Near-Surface Mounted CFRP Rebar

Cited by 3 publications

References 27 publications

Experimental Research on Axial Compression of Reinforced Concrete Short Circular Columns Strengthened with Prestressed Semicircular Steel Plates

Experimental Research on Axial Compression of Reinforced Concrete Short Circular Columns Strengthened with Prestressed Semicircular Steel Plates

A Prediction Model for Concrete Cracks due to Chloride‐Induced Corrosion

Effectiveness of geopolymer in the strengthening of RC beams using bottom NSM reinforcements

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