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Novel Narrow Closed FRP Stirrups Fabricated by a Filament Winding Process: Concept and Behavior.

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Title: Novel Narrow Closed FRP Stirrups Fabricated by a Filament Winding Process: Concept and Behavior.
Authors: Xia, Z. Y.1 (AUTHOR) zhiyu.xia@connect.polyu.hk, Yu, T.2 (AUTHOR) tao-cee.yu@polyu.edu.hk, Jiang, T.3 (AUTHOR) cetjiang@zju.edu.cn
Source: Journal of Materials in Civil Engineering. Aug2026, Vol. 38 Issue 8, p1-10. 10p.
Subjects: Filament winding, Shear strength, Fiber-reinforced plastics, Mechanical behavior of materials, Concrete beams, Surface preparation
Abstract: Fiber-reinforced polymer (FRP) stirrups present an effective solution to the perennial corrosion issue of steel stirrups. However, existing products of FRP stirrups suffer from various issues including significant strength reduction in the corner regions, and they may pose negative effects on the flexural stiffness/strength of shallow RC members due to the relatively low transverse stiffness of FRP. To address these issues, this paper presents the concept of a novel form of narrow closed FRP stirrups fabricated by a filament winding process as well as a study to demonstrate their fabrication process and mechanical behavior. The study has shown that the novel stirrups including the proposed surface profiles (ribbed and sand-coated surfaces) can be readily manufactured using a filament winding machine. It has also been shown that the novel stirrups are superior to most pultruded FRP stirrups in terms of bent strength, and they can effectively improve the shear capacity of RC beams. Furthermore, the proposed surface treatment methods (i.e., rib-forming and sand-coating) were shown to significantly improve the force-transfer mechanism between the novel stirrups and concrete. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials in Civil Engineering is the property of American Society of Civil Engineers 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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Header DbId: egs
DbLabel: Engineering Source
An: 194606956
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Novel Narrow Closed FRP Stirrups Fabricated by a Filament Winding Process: Concept and Behavior.
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  Data: <searchLink fieldCode="AR" term="%22Xia%2C+Z%2E+Y%2E%22">Xia, Z. Y.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhiyu.xia@connect.polyu.hk</i><br /><searchLink fieldCode="AR" term="%22Yu%2C+T%2E%22">Yu, T.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> tao-cee.yu@polyu.edu.hk</i><br /><searchLink fieldCode="AR" term="%22Jiang%2C+T%2E%22">Jiang, T.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> cetjiang@zju.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+in+Civil+Engineering%22">Journal of Materials in Civil Engineering</searchLink>. Aug2026, Vol. 38 Issue 8, p1-10. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Filament+winding%22">Filament winding</searchLink><br /><searchLink fieldCode="DE" term="%22Shear+strength%22">Shear strength</searchLink><br /><searchLink fieldCode="DE" term="%22Fiber-reinforced+plastics%22">Fiber-reinforced plastics</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete+beams%22">Concrete beams</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+preparation%22">Surface preparation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Fiber-reinforced polymer (FRP) stirrups present an effective solution to the perennial corrosion issue of steel stirrups. However, existing products of FRP stirrups suffer from various issues including significant strength reduction in the corner regions, and they may pose negative effects on the flexural stiffness/strength of shallow RC members due to the relatively low transverse stiffness of FRP. To address these issues, this paper presents the concept of a novel form of narrow closed FRP stirrups fabricated by a filament winding process as well as a study to demonstrate their fabrication process and mechanical behavior. The study has shown that the novel stirrups including the proposed surface profiles (ribbed and sand-coated surfaces) can be readily manufactured using a filament winding machine. It has also been shown that the novel stirrups are superior to most pultruded FRP stirrups in terms of bent strength, and they can effectively improve the shear capacity of RC beams. Furthermore, the proposed surface treatment methods (i.e., rib-forming and sand-coating) were shown to significantly improve the force-transfer mechanism between the novel stirrups and concrete. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Materials in Civil Engineering is the property of American Society of Civil Engineers 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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1061/JMCEE7.MTENG-22765
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 1
    Subjects:
      – SubjectFull: Filament winding
        Type: general
      – SubjectFull: Shear strength
        Type: general
      – SubjectFull: Fiber-reinforced plastics
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Concrete beams
        Type: general
      – SubjectFull: Surface preparation
        Type: general
    Titles:
      – TitleFull: Novel Narrow Closed FRP Stirrups Fabricated by a Filament Winding Process: Concept and Behavior.
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          Name:
            NameFull: Xia, Z. Y.
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          Name:
            NameFull: Yu, T.
      – PersonEntity:
          Name:
            NameFull: Jiang, T.
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          Dates:
            – D: 01
              M: 08
              Text: Aug2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 08991561
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            – Type: volume
              Value: 38
            – Type: issue
              Value: 8
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            – TitleFull: Journal of Materials in Civil Engineering
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