Activated CFRP NSMR Ductile Strengthening System
| Autor: | Christian Overgaard Christensen, José Sena-Cruz, Per Goltermann, Jacob Wittrup Schmidt |
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| Přispěvatelé: | Sena-Cruz, José, Correia, Luis, Azenha, Miguel |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | RILEM Bookseries ISBN: 9783030764647 Schmidt, J W, Christensen, C O, Goltermann, P & Sena-Cruz, J 2022, Activated CFRP NSMR Ductile Strengthening System . in J Sena-Cruz, L Correia & M Azenha (eds), Proceedings of the 3rd RILEM Spring Convention and Conference (RSCC 2020) : Service Life Extension of Existing Structures . vol. 3, Springer Science and Business Media B.V., RILEM Bookseries, vol. 34, pp. 349-361, 3rd RILEM Spring Convention and Conference (RSCC 2020), Guimarães, Portugal, 10/03/2020 . https://doi.org/10.1007/978-3-030-76465-4_31 |
| DOI: | 10.1007/978-3-030-76465-4_31 |
| Popis: | This paper presents some of the initial results from an ongoing research project which concerns a new NSMR strengthening method, expected to provide high ductility and strengthening effect as well as increased response consistency. A prestress of 1100 MPa activation was applied to the ductile NSMR system and compared to a reference beam. Ductility in this system is provided by a response controlling anchorage system, which interacts with the adhesively bonded NSMR. The proposed adhesive has a low E-modulus which is expected to reduce stress concentration issues of adhesively bonded joints when compared to stiffer epoxy adhesives are used, where IC-debonding seems to be the dominating failure mode. A beam deflection increase of approximately 105% has been observed when using the low E-modulus adhesive compared to the the epoxy adhesive. Change in the failure modes were furthermore observed, where the brittle de-bonding failure modes were mitigated thus extending the yielding regime with approximately 150%. |
| Databáze: | OpenAIRE |
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