Prediction Bond Strength between FRP and Concrete Interface by LEFM Method

Abstract:

To evaluate the interface strength of externally bonded fiber-reinforced polymer (FRP) composites to concrete structures, the method of the Linear Elastic Fracture Mechanic (LEFM) model is simply used. The parameters defining the material properties, describing bond action of the FRP-concrete interface is used , which was got recently by Obaidat from three-dimensional (3D) finite-element simulation results. Both the fracture energy and shear strength of the interface are determined by a function of concrete compressive strength and the adhesive shear stiffness, the maximum transferable load is predicted by LEFM interface bond-slip model. Comparison between the predicted and the experiment results shows good agreement and a certain degree of safe estimation.

• Periodical: Advanced Materials Research (Volume 988)
• Pages: 195-200
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.988.195
• Online since: July 2014
• Authors: Gu Sheng Tong*, Shen Shen Chen
• Keywords: Concrete, Debonding, Fiber Reinforced Polymer (FRP), Interface Energy, Strengthening

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