Nonlinear finite element analysis of reinforced concrete beams strengthened with textile fine grained mortar

• Main Authors: Jamellodin, Zalipah, Soh, Ming Wei, Adnan, Suraya Hani, Abdul Hamid, Noor Azlina, Salleh, Norhafizah
• Other Authors: Tuan Ismail, Tuan Noor Hasanah
• Format: Book Section
• Language: English
• Published: Penerbit UTHM 2020
• Subjects: TH Building construction
• Online Access: http://eprints.uthm.edu.my/2213/1/Ch09%20Nonlinear%20Finite%20Element%20Analysis.pdf; http://eprints.uthm.edu.my/2213/
• Institution: Universiti Tun Hussein Onn Malaysia

Nowadays, there was an increasing need of repairing and upgrading the reinforced concrete (RC) structure due to the deterioration of the structure. The fibre reinforced polymer (FRP) was commonly used for structural retrofitting purposes. However, owing to the debonding of the FRP from the concrete substrate and high cost of epoxy, it was gradually replaced with textile fine grained mortar (TFGM) nowadays. The TFGM system has been widely used in the construction field nowadays to repair the structure. Our study focus on the strain performances of the concrete surface, steel reinforcement and the textile itself. There were many proven experimental results showing that the TFGM was more effective than the other strengthening method such as FRP plate method. The experimental work done by previous researcher on investigation of strain performances of the concrete surface, steel reinforcement and the textile itself which consists of eleven (11) RC beams with dimension 150 x 200 x 2500 mm. The RC beams were strengthened with FGM and TFGM with 4 layers. The investigation continued with the finite element (FE) strain performance analysis with using Advanced Tool for Engineering Nonlinear Analysis (ATENA) software. The strain of the concrete surface, steel reinforcement and the textile were measured at a mid-point of RC beam. Then, the results of the finite element analysis software ATENA compared against the experimental results. The strain performances of the concrete and steel reinforcement improved noticeably when the number of layers of textile reinforcement used increased.