Quality Control Test for Carbon Fiber Reinforced Polymer (CFRP) Anchors for Rehabilitation


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Title: Quality Control Test for Carbon Fiber Reinforced Polymer (CFRP) Anchors for Rehabilitation

Author(s): Guillermo D. Huaco, James O. Jirsa, and Oguzhan Bayrak

Publication: Special Publication

Volume: 275


Appears on pages(s): 1-18

Keywords: CFRP anchor, CFRP anchor failure, CFRP sheet, CFRP sheet fracture, concrete shear failure, debonding

Date: 3/1/2011

Different strategies can be used to repair, rehabilitate and strengthen existing structures. Techniques based on Fiber Reinforced Polymer (FRP) materials appear to be innovative alternatives to traditional solutions because of their high tensile strength, lightweight, and ease of installation. One of the most common and useful FRPs is Carbon Fiber Reinforced Polymer (CFRP) sheets and anchors attached to strengthen the section through addition of tensile capacity. The purpose of this study was to develop a technique for assessing the strength of anchors for quality control. A method for assessing the quality of CFRP anchor installation was developed using plain concrete beams reinforced externally with CFRP sheets attached with epoxy and CFRP anchors. Under loading on the beam, a tensile force was developed in the CFRP sheets and a shear force on the CFRP anchors. The forces in the CFRP anchors were defined by the load applied to the beam and compared with forces based on measured stress in CFRP sheets.