Novel Embedded FRP Anchor for RC Beams Strengthened in Flexure with NSM FRP Bars: Concept and Behavior

Y. Ke, S. S. Zhang, S. T. Smith, T. Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


The near-surface-mounted (NSM) fiber-reinforced polymer (FRP) strengthening technique for reinforced-concrete (RC) beams has attracted worldwide research attention and application in the past two decades. In spite of improved bond strength between the NSM FRP and concrete, compared with the externally bonded (EB) FRP method, premature debonding failure still occurs, and, hence, the efficiency of the NSM FRP intervention is limited. An intuitive means to enhance efficiency is to apply anchorage devices to the RC beam; however, the availability of viable anchorage is limited for NSM applications. A novel anchorage device is therefore presented in this paper, which is referred to as an embedded FRP anchor (EFA). The concept, manufacture, and installation of the EFAs were initially presented. The effectiveness of EFAs in NSM FRP-strengthened RC beams was then ascertained through full-scale beam tests and comparison with an NSM FRP-strengthened beam anchored with a U-jacket. Moreover, the effects of EFA parameters on the behavior of anchored beam were also investigated. The test results not only prove the high anchoring efficiency of EFA but also reveal the significant effects of EFA parameters on the failure mode, load-deflection response, and NSM FRP strain of the EFA anchored beam.

Original languageEnglish
Article number04022093
JournalJournal of Composites for Construction
Issue number1
Publication statusPublished - 1 Feb 2023


  • Debonding
  • Embedded FRP anchor (EFA)
  • Fiber-reinforced polymer (FRP)
  • Flexural strengthening
  • Near-surface mounted (NSM)
  • Reinforced concrete (RC)

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering


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