Abstract
This paper presents the development of a new filament wound CFRP sleeve and resin grout for the efficient anchorage of CFRP parallel wire bundles. 25 years old re-used CFRP wires were examined with regard to a possible drop in strength or stiffness due to aging and then processed into two bridge cables. The new anchorage and cables were tested to tensile capacity (giving on average 1.833 MN) in two full scale instrumented experiments using laser and strain gauges before two new 26-30 m long post-tensioning cables were produced by Carbo-Link AG with each 37 of the regained CFRP wires. Both CFRP parallel wire cables were finally successfully prestressed to 1 MN (55% of their UTS) in order to strengthen an existing bridge in the Swiss Alps over the river Ilfis in summer 2023. This strengthening project is thoroughly described. The full-scale tests confirmed the durability and strength of the new anchorage system, and the feasibility for re-use of valuable CFRP pultrusions for post-tensioning was proven by the successful bridge strengthening which also showed the sustainability potential of CFRP pultrusions.
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.
