Issue |
E3S Web Conf.
Volume 427, 2023
International Conference on Geotechnical Engineering and Energetic-Iraq (ICGEE 2023)
|
|
---|---|---|
Article Number | 02022 | |
Number of page(s) | 9 | |
Section | Structural Engineering and Construction | |
DOI | https://doi.org/10.1051/e3sconf/202342702022 | |
Published online | 13 September 2023 |
Behavior of Damaged Continuous Reinforced Concrete Beams Repaired by CFRP Sheets
Department of Civil Engineering, University of Kufa, Kufa, Iraq
a* Corresponding author alaay.alkinani@student.uokufa.edu.iq
b hayder.kammona@uokufa.edu.iq
Despite the widespread use of RC continuous beams, the performance of these beams, when repaired via Fiber Reinforced Polymer (FRP) composite material, has received less attention. Furthermore, several features of the flexural aspect of repaired RC continuous beams still demand experimental and analytical evaluation. However, many anchoring methods have been developed to delay premature failure in the RC beams, which are strengthened with FRP composite materials. The plan of this experimental study consists of eight continuous beams cast with dimensions (150*250*2800) mm considering the length of the clear span is 1300mm. Except for one, all specimens were attached via Carbon FRP sheets about 70% of the span length in negative and positive moment zones beyond a predetermined damage level. Moreover, this study suggested modifying the end-anchor technique and adding CFRP layers with (45, 65, and 95) % as damage ratios. According to the results, the optimal percentage of restored ultimate capacity was 108.8% with peeling-off concrete cover failure mode, which was obtained from using an end-anchor and two layers of the sheet. Also, increasing the damage ratio leads to a decline in toughness and ductility values. In addition, it is possible to repair the structure with a 95% damage ratio rather than remove it.
Key words: CFRP / damage ratios / end-anchor / RC continuous beam / repaired beam
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.