Multi-impact performance of prestressed CFRP-strengthened RC beams using H-typed end anchors

Huang, Zhenyu; Deng, Weixiong; Li, Ren; Chen, Jieren; Sui, Lili; Zhou, Yuan; Zhao, Debo; Yang, Lei; Ye, Jianqiao

doi:10.1016/j.marstruc.2022.103264

Cited by 13 publications

(4 citation statements)

References 60 publications

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“…The findings suggest that the increased ratio of the stirrup and CFRP fibre will increase strength gain, and the nominal shear strength will be reduced with the improvement of the section size. Huang et al (2022) developed a ductility controllable device to predict the static and flexural behaviour by using drop weight impact and four-point bending in RC beams of end anchors of type H RC beams prestressed strengthened CFRP [46]. CFRP bars are used in place of reinforcement bars.…”

Section: Beamsmentioning

confidence: 99%

Carbon Fibre-Reinforced Polymer (CFRP) Composites in Civil Engineering Application—A Comprehensive Review

et al. 2023

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In civil engineering, carbon fibre-reinforced polymer (CFRP) composites have emerged as a promising alternative to conventional materials. The article provides a comprehensive overview of the application of CFRP composites in various building structural elements and their characteristics and properties, such as their fatigue and corrosion resistance, stiffness and high strength, and incorporation of temperature factors. The advantages and disadvantages of CFRP composites and the current trends and prospects for CFRP composites in the construction sector are discussed. In addition, the article compares various studies on CFRP composites to shed light on their performance and potential limitations. This paper aims to provide useful information to researchers and practitioners interested in using CFRP composites in civil engineering applications. In addition, the article discusses emerging materials in CFRP, such as nanostructured carbon fibres, hybrid fibre reinforcement, and self-sensing CFRP. Additionally, the paper outlines how CFRP composites promote sustainability by increasing structural durability and longevity.

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Section: Beamsmentioning

confidence: 99%

Carbon Fibre-Reinforced Polymer (CFRP) Composites in Civil Engineering Application—A Comprehensive Review

et al. 2023

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“…The unidirectional CFRP sheet of YC-190-300 g and epoxy resin of YC-189-A (a two-part ambient cured structural adhesive, with a mass ratio of 2:1) was produced by Shanghai Youshikang Chemical Co., Ltd, and its mechanical properties, as shown in Table 2, the CFRP sheets with a thickness of less than 1 mm frequently used in research and engineering. [70][71][72][73] All experiments were conducted in the materials laboratory of Qingdao University of Technology, Qingdao.…”

Section: Raw Materialsmentioning

confidence: 99%

Effect of chloride penetration on CFRP sheet, CFRP‐concrete interface, and CFRP‐strengthened concrete beams

Wang

Han

Wang

et al. 2023

Structural Concrete

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Whether the performance of carbon fiber‐reinforced polymer (CFRP)‐strengthened concrete structure is affected by chloride penetration is the key to the application under chloride environments. In this paper, the effect of chloride penetration on tensile properties of CFRP sheet, bond behavior of CFRP‐concrete, and flexural performance of CFRP‐strengthened concrete beams were studied. Results show that chloride penetration has no effect on the elastic modulus of the CFRP sheet. The tensile strength and elongation of the CFRP sheet decrease with the exposure time increase, reducing by 10% and 12.7% after 240 days. The interface failure of CFRP‐concrete is likely to occur on the concrete surface. As the exposure time increases, the interface failure develops toward the epoxy resin layer; the sliding stiffness and end slip of the interface decrease. However, the ultimate bearing capacity of the interface first increases and then decreases. As the exposure time increase, the effective bonding length gradually increases, and the failure mode of CFRP‐strengthened beams changes from bending failure to shear failure. After 120 days, the ultimate bearing capacity of the beams is significantly reduced. From three parts of materials, interfaces, and components to provide an evaluation basis for the use, regular detection, and life prediction of CFRP‐strengthened reinforced concrete beams under chloride environments.

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“…The danger of failure due to debonding has caused increased attention to search of methods to prevent it, which is anchoring of composite materials. Therefore, the number of studies is devoted to effective methods of anchoring of composite materials (Castillo et al, 2016;Castillo et al, 2019;Huang et al, 2022;Yang et al, 2021;Chen et al, 2018;Yang et al, 2018).…”

Section: Composition and Application Of Frp Materialsmentioning

confidence: 99%

“…The results of the study by Huang et al indicate that H-type anchors and an increased level of prestressing of CFRP strips not only increase load resistance and plasticity, but also allow to identify critical load levels close to limit states. According to the comprehensive evaluation and use of the FE model, this approach allows to increase the degree of use of composite materials and open new perspective applications (Huang et al, 2022).…”

Section: Composition and Application Of Frp Materialsmentioning

confidence: 99%

Perspectives and Specific Features of the Use of Composite Materials for Strengthening of Damaged Reinforced Concrete Structures

Kopiika,

Blikharskyy

2023

Theory build. pract.

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The need for strengthening of existing structures has recently become topical. Composite materials due to their remarkable properties, possibility to adaptation to the design requirements and facilitation of restoration measures are widely used for strengthening. This article is focused on review of restoration approaches with the use of composite materials and specific features of their behavior under various impacts. Study includes analysis of recent studies in the area, identifying gaps of knowledge and perspectives for further research. The most relevant areas of research were distinguished including numerical finite element modelling for parametric analysis, deepening of understanding of composites` linearly elastic behavior, approaches to prevent delamination failure. Further thorough research in this area is strongly recommended to deepen the knowledge and maximize the efficiency of use of composite strengthening systems.

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Multi-impact performance of prestressed CFRP-strengthened RC beams using H-typed end anchors

Cited by 13 publications

References 60 publications

Carbon Fibre-Reinforced Polymer (CFRP) Composites in Civil Engineering Application—A Comprehensive Review

Carbon Fibre-Reinforced Polymer (CFRP) Composites in Civil Engineering Application—A Comprehensive Review

Effect of chloride penetration on CFRP sheet, CFRP‐concrete interface, and CFRP‐strengthened concrete beams

Perspectives and Specific Features of the Use of Composite Materials for Strengthening of Damaged Reinforced Concrete Structures

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