Determination of a Large-Diameter Carbon Fiber Anchor Capacity

Al-Doori A., Rashid R. S. M., Tasdemir E., Seracino R.

10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), İstanbul, Turkey, 8 - 10 December 2021, vol.198, pp.1208-1215 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 198
  • Doi Number: 10.1007/978-3-030-88166-5_105
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.1208-1215
  • Keywords: Carbon fiber anchor, Seismic repair, Fan angle, FRP, STRENGTH, DEVICES
  • Istanbul Technical University Affiliated: No


The use of fiber-reinforced polymer (FRP) materials has become a key to enhancing the performance of existing structural elements. Debonding is a common failure mode when FRP sheets are used for the flexural or shear strengthening of reinforced concrete (RC) members. Anchoring the end of FRP sheets with carbon fiber (CF)-reinforced spike anchors, which are typically small, is a proposed method to prevent or delay debonding failure. In the case of seismic strengthening or repair, large-diameter CF anchors are required due to the high demand on structural members. Given the limited available data on large-diameter CF anchors, a challenge in this field is the use of large-diameter CF anchors for conventional RC structures exposed to seismic events. Thus, a testing program was developed to examine the behavior of large-diameter CF anchors. The behavior of CF anchors was examined via a pull-out test for various fanning angles ranging from 45 degrees to 60 degrees. The obtained test data for a given fan angle can be used to enhance the performance of RC structural members in terms of resisting seismic events.