The Gradient Anchorage Method for Prestressed CFRP Strips: from the Development to the Strengthening of an 18 M Long Bridge Girder
The external bonding of carbon fiber-reinforced polymer (CFRP) strips by two-component epoxy adhesive on the concrete surfaces of buildings and bridges is a retrofitting method accepted worldwide. The gradient anchorage (GA) is an anchoring method especially developed to anchor prestressed CFRP stri...
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| Format: | Article |
| Language: | English |
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Sciendo
2018-09-01
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| Series: | Slovak Journal of Civil Engineering |
| Subjects: | |
| Online Access: | http://www.degruyter.com/view/j/sjce.2018.26.issue-3/sjce-2018-0018/sjce-2018-0018.xml?format=INT |
| _version_ | 1818568639313346560 |
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| author | Breveglieri Matteo Czaderski Christoph Michels Julien |
| author_facet | Breveglieri Matteo Czaderski Christoph Michels Julien |
| author_sort | Breveglieri Matteo |
| collection | DOAJ |
| description | The external bonding of carbon fiber-reinforced polymer (CFRP) strips by two-component epoxy adhesive on the concrete surfaces of buildings and bridges is a retrofitting method accepted worldwide. The gradient anchorage (GA) is an anchoring method especially developed to anchor prestressed CFRP strips to concrete elements without a need for mechanical clamping after the installation phase. This method takes advantage of the adhesives property to undergo accelerated curing when heated. The results of more than fifteen years of research on the development of the gradient anchorage at the Swiss Federal Laboratories for Materials Science and Technology (Empa) are presented in this paper. The basic principles and application steps are explained, and the main results starting from the development of the technique up to the testing of real scale girders are described, and the new challenges posed by this innovative system are highlighted. The gradient anchorage is a valid alternative to a mechanically anchored system for prestressed FRP (P-FRP). |
| first_indexed | 2024-12-14T06:37:54Z |
| format | Article |
| id | doaj.art-90bcc4cfe0fc45eda7365de588d6bdce |
| institution | Directory Open Access Journal |
| issn | 1338-3973 |
| language | English |
| last_indexed | 2024-12-14T06:37:54Z |
| publishDate | 2018-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Slovak Journal of Civil Engineering |
| spelling | doaj.art-90bcc4cfe0fc45eda7365de588d6bdce2022-12-21T23:13:20ZengSciendoSlovak Journal of Civil Engineering1338-39732018-09-01263294010.2478/sjce-2018-0018sjce-2018-0018The Gradient Anchorage Method for Prestressed CFRP Strips: from the Development to the Strengthening of an 18 M Long Bridge GirderBreveglieri Matteo0Czaderski Christoph1Michels Julien2Empa – Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, SwitzerlandEmpa – Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerlandre-fer AG, Brunnen, SwitzerlandThe external bonding of carbon fiber-reinforced polymer (CFRP) strips by two-component epoxy adhesive on the concrete surfaces of buildings and bridges is a retrofitting method accepted worldwide. The gradient anchorage (GA) is an anchoring method especially developed to anchor prestressed CFRP strips to concrete elements without a need for mechanical clamping after the installation phase. This method takes advantage of the adhesives property to undergo accelerated curing when heated. The results of more than fifteen years of research on the development of the gradient anchorage at the Swiss Federal Laboratories for Materials Science and Technology (Empa) are presented in this paper. The basic principles and application steps are explained, and the main results starting from the development of the technique up to the testing of real scale girders are described, and the new challenges posed by this innovative system are highlighted. The gradient anchorage is a valid alternative to a mechanically anchored system for prestressed FRP (P-FRP).http://www.degruyter.com/view/j/sjce.2018.26.issue-3/sjce-2018-0018/sjce-2018-0018.xml?format=INTCFRPConcrete strengtheningPrestressed FRPGradient anchorage |
| spellingShingle | Breveglieri Matteo Czaderski Christoph Michels Julien The Gradient Anchorage Method for Prestressed CFRP Strips: from the Development to the Strengthening of an 18 M Long Bridge Girder Slovak Journal of Civil Engineering CFRP Concrete strengthening Prestressed FRP Gradient anchorage |
| title | The Gradient Anchorage Method for Prestressed CFRP Strips: from the Development to the Strengthening of an 18 M Long Bridge Girder |
| title_full | The Gradient Anchorage Method for Prestressed CFRP Strips: from the Development to the Strengthening of an 18 M Long Bridge Girder |
| title_fullStr | The Gradient Anchorage Method for Prestressed CFRP Strips: from the Development to the Strengthening of an 18 M Long Bridge Girder |
| title_full_unstemmed | The Gradient Anchorage Method for Prestressed CFRP Strips: from the Development to the Strengthening of an 18 M Long Bridge Girder |
| title_short | The Gradient Anchorage Method for Prestressed CFRP Strips: from the Development to the Strengthening of an 18 M Long Bridge Girder |
| title_sort | gradient anchorage method for prestressed cfrp strips from the development to the strengthening of an 18 m long bridge girder |
| topic | CFRP Concrete strengthening Prestressed FRP Gradient anchorage |
| url | http://www.degruyter.com/view/j/sjce.2018.26.issue-3/sjce-2018-0018/sjce-2018-0018.xml?format=INT |
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