Abstract
In this paper, the influence of important parameters affecting shear transfer strength and deformation of concrete strengthened externally using CFRP laminate has been investigated. Parameters investigated were the internal steel reinforcement, CFRP layers, existence of preloading, and existence of tension on shear plane. For the latter one, a special type of push-off specimen has been developed, different from those used by the others. This specimen can be named a modified pair push-off specimen and was found to be more convenient compared with the other specimens used. Results showed that there is a relatively high shear strength enhancement of non-reinforced concrete strengthened with CFRP laminate, reaching 91% when two CFRP layers are used for strengthening. Shear enhancement ratio was found to reduce with the increase of the internal steel ratio, of an enhancement between 8% and 29%. Effect of moderate preloading on concrete was found not important on the residual shear strength. There is a good chance to strengthen concrete subjected to shear and tension for shear enhancement between 22% and 157%. A new proposal was developed for the prediction of direct shear capacity of strengthened concrete, essentially depends on an accurate assessment of FRP laminate contribution to enhance shear.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
