Flexural Strengthening Reinforced Concrete Beams Subjected to Flexural Damage with CFRP
- DOI
- 10.2991/aer.k.211106.021How to use a DOI?
- Keywords
- CFRP; Stiffness; Maximum Load; Ductility
- Abstract
In 2020, about 12% of bridges in Indonesia were assessed to be damaged. CFRP is a material that is widely used for repair reinforced concrete bridges. The behavior of reinforced concrete beams strengthened with externally bonded CFRP sheets was investigated experimentally. The research was to investigate the influence of CFRP sheet numbers on the mechanical behavior of concrete beams under flexural loading. Furthermore, the stiffness of the new reinforced concrete beams with those after being repaired with CFRP will be compared. Three CFRP reinforced concrete beams with the same dimension but the different number of layers of CFRP sheets have been tested. Besides, a normal reinforced concrete beam without reinforced with externally bonded CFRP sheets also has been tested as a comparison specimen. Before the reinforced concrete beams are reinforced with externally bonded CFRP sheets, the beams have tested to yield steel; then the beams were repaired by patching the cracks. The results of this research indicated that the loading capacity of the reinforced concrete beams strengthened with externally bonded CFRP sheet increased, but the deflection decreased. The ratio of the maximum load of normal concrete with 1 layer, 2 layers, and 3 layers of FRP has increased by 29.05%, 34.63%, and 16.58%, sequentially. The stiffness value after being reinforced with FRP experienced a decrease in the stiffness value by 27.43% - 56.70%, but the ductility index increased by 39.72% - 66.21%.
- Copyright
- © 2021 The Authors. Published by Atlantis Press International B.V.
- Open Access
- This is an open access article under the CC BY-NC license.
Cite this article
TY - CONF AU - Aridi Wijaya Pradana AU - Mardiana Oesman PY - 2021 DA - 2021/11/23 TI - Flexural Strengthening Reinforced Concrete Beams Subjected to Flexural Damage with CFRP BT - Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021) PB - Atlantis Press SP - 130 EP - 136 SN - 2352-5401 UR - https://doi.org/10.2991/aer.k.211106.021 DO - 10.2991/aer.k.211106.021 ID - Pradana2021 ER -