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Flexural behaviors of GFRP-reinforced Engineered Cementitious Composite (ECC)-concrete composite beams.

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Title: Flexural behaviors of GFRP-reinforced Engineered Cementitious Composite (ECC)-concrete composite beams.
Authors: Wang, Li-Hui1 (AUTHOR), Shi, Wen-Hao1 (AUTHOR) shiwh@emails.bjut.edu.cn, Qian, Lan-Ping1 (AUTHOR), Bai, Yu-Lei1 (AUTHOR), Liu, Shi-Zhu1 (AUTHOR), Yang, Zhan-Qun2 (AUTHOR)
Source: Engineering Structures. Jun2025, Vol. 332, pN.PAG-N.PAG. 1p.
Subjects: Cement composites, Concrete construction, Elastic modulus, Fiber-reinforced plastics, Steel bars, Composite construction
Abstract: The use of Fiber-Reinforced Polymer (FRP) bars as an alternative to steel bars addresses corrosion challenges in conventional concrete structures. However, the lower elastic modulus of FRP bars typically leads to excessive deformation and crack widening. This study investigates the synergistic effects of combining glass FRP (GFRP) bars with Engineered Cementitious Composites (ECC) to enhance the flexural performance of concrete beams. Seven beams were tested, including concrete, full-ECC, and composite beams with varying reinforcement ratios and configurations. Results demonstrated that ECC integration significantly improved load-bearing capacity (up to 6.2 % in composite beams), ductility (1.5 times higher than concrete beams), and crack control (crack widths reduced by 83 % in composite beams). A sectional analysis model accurately predicted flexural behavior, revealing that the tensile contribution of ECC diminishes at higher reinforcement ratios (>1.84 %), thereby serving as a safety reserve. An optimal ECC layer-to-beam height ratio of 0.3–0.4 was proposed to balance performance. This work advances the understanding of GFRP-ECC systems, offering practical insights for the design of durable and high-performance structures. • The incorporation of ECC improved failure behavior of GFRP-reinforced beams. • 2.GFRP-reinforced beams with higher reinforcement ratios exhibited higher stiffness. • The effect of ECC on flexural performance of hybrid reinforced beams was limited. • The cross-section analysis method effectively predicted the bending performance. • Optimal values for the thickness of the ECC layer were proposed. [ABSTRACT FROM AUTHOR]
Copyright of Engineering Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 184434496
AccessLevel: 6
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  Label: Title
  Group: Ti
  Data: Flexural behaviors of GFRP-reinforced Engineered Cementitious Composite (ECC)-concrete composite beams.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Li-Hui%22">Wang, Li-Hui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shi%2C+Wen-Hao%22">Shi, Wen-Hao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> shiwh@emails.bjut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Qian%2C+Lan-Ping%22">Qian, Lan-Ping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bai%2C+Yu-Lei%22">Bai, Yu-Lei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Shi-Zhu%22">Liu, Shi-Zhu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Zhan-Qun%22">Yang, Zhan-Qun</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Engineering+Structures%22">Engineering Structures</searchLink>. Jun2025, Vol. 332, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Cement+composites%22">Cement composites</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete+construction%22">Concrete construction</searchLink><br /><searchLink fieldCode="DE" term="%22Elastic+modulus%22">Elastic modulus</searchLink><br /><searchLink fieldCode="DE" term="%22Fiber-reinforced+plastics%22">Fiber-reinforced plastics</searchLink><br /><searchLink fieldCode="DE" term="%22Steel+bars%22">Steel bars</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+construction%22">Composite construction</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The use of Fiber-Reinforced Polymer (FRP) bars as an alternative to steel bars addresses corrosion challenges in conventional concrete structures. However, the lower elastic modulus of FRP bars typically leads to excessive deformation and crack widening. This study investigates the synergistic effects of combining glass FRP (GFRP) bars with Engineered Cementitious Composites (ECC) to enhance the flexural performance of concrete beams. Seven beams were tested, including concrete, full-ECC, and composite beams with varying reinforcement ratios and configurations. Results demonstrated that ECC integration significantly improved load-bearing capacity (up to 6.2 % in composite beams), ductility (1.5 times higher than concrete beams), and crack control (crack widths reduced by 83 % in composite beams). A sectional analysis model accurately predicted flexural behavior, revealing that the tensile contribution of ECC diminishes at higher reinforcement ratios (>1.84 %), thereby serving as a safety reserve. An optimal ECC layer-to-beam height ratio of 0.3–0.4 was proposed to balance performance. This work advances the understanding of GFRP-ECC systems, offering practical insights for the design of durable and high-performance structures. • The incorporation of ECC improved failure behavior of GFRP-reinforced beams. • 2.GFRP-reinforced beams with higher reinforcement ratios exhibited higher stiffness. • The effect of ECC on flexural performance of hybrid reinforced beams was limited. • The cross-section analysis method effectively predicted the bending performance. • Optimal values for the thickness of the ECC layer were proposed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Engineering Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.engstruct.2025.120097
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Cement composites
        Type: general
      – SubjectFull: Concrete construction
        Type: general
      – SubjectFull: Elastic modulus
        Type: general
      – SubjectFull: Fiber-reinforced plastics
        Type: general
      – SubjectFull: Steel bars
        Type: general
      – SubjectFull: Composite construction
        Type: general
    Titles:
      – TitleFull: Flexural behaviors of GFRP-reinforced Engineered Cementitious Composite (ECC)-concrete composite beams.
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            NameFull: Wang, Li-Hui
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            NameFull: Shi, Wen-Hao
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            NameFull: Qian, Lan-Ping
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            NameFull: Bai, Yu-Lei
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            NameFull: Liu, Shi-Zhu
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            – D: 01
              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
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              Value: 332
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