Influence of bending and dowel action on the interface bond in RC beams strengthened with FRP sheets: An experimental investigation

Jianguo Dai, H. Yokota, T. Ueda, B. Wan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper presented the test results on a series of RC beams externally bonded with FRP sheets under coupled bending and dowel actions. The main focus was to investigate how the dowel force acting on the FRP sheets influences the shear transfer capacity of the bond between the FRP and concrete. A loading system was developed to simultaneously introduce shear and normal stresses into the FRP-concrete interfaces. Interfacial failure criteria under different loading conditions were discussed. It was found that the dowel force on the FRP sheets affected greatly the initiation of local interface peeling which led to a decrease of the beam's stiffness. However, the ultimate flexural capacity was not significantly influenced by the existence of the dowel action if a sufficient anchorage length was available. The paper also provided a benchmark database that can be used for calibrating the mix-mode bond constitutive laws for FRP-concrete interfaces.
Original languageEnglish
Title of host publicationProceedings of the 6th International Conference on Fracture Mechanics of Concrete and Concrete Structures
Pages1149-1156
Number of pages8
Volume2
Publication statusPublished - 1 Dec 2007
Externally publishedYes
Event6th International Conference on Fracture Mechanics of Concrete and Concrete Structures - , Italy
Duration: 17 Jun 200722 Jun 2007

Conference

Conference6th International Conference on Fracture Mechanics of Concrete and Concrete Structures
Country/TerritoryItaly
Period17/06/0722/06/07

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Building and Construction

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