Conference paper · Book chapter
Activated CFRP NSMR Ductile Strengthening System
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%.
Language: | English |
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Publisher: | Rilem publications |
Year: | 2022 |
Pages: | 349-361 |
Proceedings: | RILEM Spring Convention and Conference |
Series: | Rilem Bookseries |
Journal subtitle: | Volume 3: Service Life Extension of Existing Structures |
ISBN: | 3030764648 , 3030764656 , 9783030764647 and 9783030764654 |
ISSN: | 22110844 |
Types: | Conference paper and Book chapter |
DOI: | 10.1007/978-3-030-76465-4_31 |
ORCIDs: | Christensen, Christian Overgaard and Goltermann, Per |