Title: Local Bond Stress-Slip Relationship between Carbon Fiber-Reinforced Polymer Plates and Concrete under Fatigue Loading

Author(s): Wei Zhang and Toshiyuki Kanakubo

Publication: Structural Journal

Volume: 111

Issue: 4

Appears on pages(s): 955-966

Keywords: carbon fiber-reinforced polymer (CFRP) plate; fatigue; local bond stress; slip

DOI: 10.14359/51686781

Date: 7/1/2014

Abstract:
This research proposes a fatigue cyclic model based on the relationship of local bond stress and slip between concrete and carbon fiber-reinforced polymer (CFRP) plates. To test this model, 11 double-faced shear bond specimens were subjected to fatigue loading. The test parameters were concrete compressive strength, type of CFRP plate, and fatigue loading condition. The results show that the local bond stress-slip relationship under fatigue has an almost elastic behavior. A local bond stress-slip model is proposed by evaluating the stiffness and the envelope curve expressed by the Popovics model. The proposed model and the strain distributions obtained by numerical analysis using the model show good agreement with the experimental results.