A Model for the Bond-slip of a GFRP Bar in Concrete

Glass fiber reinforced polymer (GFRP) bars are emerging as desirable alternatives for traditional steel reinforcements in concrete industry. A proper bond between concrete and reinforcement is critical for the performance of reinforced concrete structures. Due to the complexity of modeling the bond action, a perfect bond has been usually considered with the slippage between concrete and reinforcement neglected. The purpose of the present study is to develop a parametric bond-slip model based on pull-out tests performed on sand coated GFRP bars. It included exponential rising, linear descending and residual constant bond stress stages. A sensitivity analysis was performed to determine the bond parameters. Different points along the embedded length of the bar were monitored to illustrate the difference between the average and nodal bond-slip relationships. The proposed bond model was used in a finite element analysis that modeled the cracking in concrete and explicitly simulated the bond action. The model was capable of presenting both concrete splitting and pull-through modes of failure. Simulations were performed on samples with different concrete covers to demonstrate both failure modes.

• Record URL:
  https://doi.org/10.1016/j.engstruct.2017.05.034
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S014102961731667X
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01410296
• Supplemental Notes:
  • Abstract reprinted with permission of Elsevier.
• Authors:
  • Gooranorimi, Omid
  • Suaris, Wimal
  • Nanni, Antonio
• Publication Date: 2017-9-1

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: pp 34-42
• Serial:
  • Engineering Structures
  • Volume: 146
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0141-0296
  • Serial URL: http://www.sciencedirect.com/science/journal/01410296

Subject/Index Terms

• TRT Terms: Concrete bridges; Concrete structures; Failure; Fiber reinforced polymers; Finite element method; Glass fibers; Pull out test; Reinforcement (Engineering); Sensitivity analysis; Simulation
• Uncontrolled Terms: Bond slip
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 01639871
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 28 2017 2:40PM