Non-linear Behavior oF Low Strength RC Beams Strengthened with CFRP Sheets

Ahmed Mohammed Youssef Mohammed, Abdul Rahman Mamoun Ali, Hany Ahmed Abdalla

Abstract


There are many modern technologies for strengthening concrete. One of them is Carbon Fiber Reinforcement Polymer (CFRP) sheets. There are many cases that require concrete strengthening, including the weakness of concrete from the design strength due to the exposure of the concrete elements to fires or less control of concrete quality. This research provides a theoretical study to analyze the behavior of low strength RC beams strengthened with CFRP sheets using ANSYS software. The research contained (75) RC beam model specimens. Six of them for verifying results with experimental tests. Forty five specimens were used for studying flexural behavior and twenty four beam models used for studying shear behavior. The study conducted with variable parameters includes CFRP thickness, concrete strength, the yield stress of steel, and the application of CFRP plies. The theoretical results were very similar to experimental test results. The results proved that strengthening RC beams is increasing load capacity and it is very effective in case of low yield stress of steel.

 

Doi: 10.28991/cej-2021-03091670

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Keywords


Shear Behavior; Flexural Behavior; Low Strength Concrete; CFRP Sheets; Finite Element Method by ANSYS.

References


Mahajan Ganesh S. “Poor Quality in Building Projects”. International Journal of Engineering Sciences & Research Technology 5, no. 7 (July 25, 2016): 1147–53. doi:10.5281/zenodo.58634.

Holmes, Niall. “Structural Properties of Concrete Materials Containing RoadCem.” Journal of Construction Engineering 2015 (June 16, 2015): 1–8. doi:10.1155/2015/795080.

Khoury, Gabriel Alexander. “Effect of Fire on Concrete and Concrete Structures.” Progress in Structural Engineering and Materials 2, no. 4 (October 2000): 429–447. doi:10.1002/pse.51..

Nofal, N.M., and Hamdy, G.A., “Effect of protection materials on FRP strengthened concrete axial compression members”, Journal of Engineering and Applied Science, Faculty of Eng., Cairo University 52, no. 6, (2005): 1123-1141.

Zaki, M.K., “Performance of RC beams strengthened with FRP strips”, Journal of Engineering and Applied Science, Faculty of Eng., Cairo University 57, no. 2, (2010): 99-112.

Mashrei, Mohammed. A., Jamal. S. Makki, and Ali A. Sultan. “Flexural Strengthening of Reinforced Concrete Beams Using Carbon Fiber Reinforced Polymer (CFRP) Sheets with Grooves.” Latin American Journal of Solids and Structures 16, no. 4 (2019). doi:10.1590/1679-78255514..

Mugahed Amran, Y.H., Rayed Alyousef, Raizal S.M. Rashid, Hisham Alabduljabbar, and Chung-Chan Hung. “Properties and Applications of FRP in Strengthening RC Structures: A Review.” Structures 16 (November 2018): 208–238. doi:10.1016/j.istruc.2018.09.008.

Jahami, Ali, Yehya Temsah, and Jamal Khatib. “The Efficiency of Using CFRP as a Strengthening Technique for Reinforced Concrete Beams Subjected to Blast Loading.” International Journal of Advanced Structural Engineering 11, no. 4 (September 12, 2019): 411–420. doi:10.1007/s40091-019-00242-w.

Farahani, Ahmad, Ali Kheyroddin, and Mohammad Kazem Sharbatdar. “Finding Critical Element in the Progressive Collapse of RC Structures Using Sensitivity Analysis.” Civil Engineering Journal 4, no. 12 (December 24, 2018): 3038. doi:10.28991/cej-03091219.

Concrete Society Committee, “Design Guidance for Strengthening Concrete Structures Using Fiber Composite Materials”, Concrete Society Technical Report, no. 55, (2000): 71.

Hawileh, R.A., W. Nawaz, and J.A. Abdalla. “Flexural Behavior of Reinforced Concrete Beams Externally Strengthened with Hardwire Steel-Fiber Sheets.” Construction and Building Materials 172 (May 2018): 562–573. doi:10.1016/j.conbuildmat.2018.03.225.

Barour, Sabiha, Abdesselam Zergua, Farid Bouziadi, and Waleed Abed Jasim. “Finite Element Analysis of CFRP-Externally Strengthened Reinforced Concrete Beams Subjected to Three-Point Bending.” World Journal of Engineering 17, no. 2 (December 12, 2019): 183–202. doi:10.1108/wje-04-2019-0121.

Hammad, M.R., “Non-linear finite element analysis of reinforced concrete beams strengthened with carbon fiber-reinforced”, M.Sc. Thesis, Faculty of Engineering, the Islamic university of Gaza, (2015).

Balamuralikrishnan, R., and C. Antony Jeyasehar. “Flexural Behavior of RC Beams Strengthened with Carbon Fiber Reinforced Polymer (CFRP) Fabrics.” The Open Civil Engineering Journal 3, no. 1 (October 6, 2009): 102–109. doi:10.2174/1874149500903010102.

Alagusundaramoorthy, P., and Harik, I.E., and Choo, C.C., “Shear strength of R/C beams wrapped with CFRP fabric”, Research, Faculty of Engineering, Kentucky Transportation Center, University of Kentucky, (2002).

Bodzak, Przemysław. “Flexural Behaviour of Concrete Beams Reinforced with Different Grade Steel and Strengthened by CFRP Strips.” Composites Part B: Engineering 167 (June 2019): 411–421. doi:10.1016/j.compositesb.2019.02.056.

Egyptian code of practice for the use of fiber reinforced polymer (FRP) in the construction fields Code No. (ECP 2005-208).

Seara-Paz, Sindy, Belén González-Fonteboa, Fernando Martínez-Abella, and Diego Carro-López. “Long-Term Flexural Performance of Reinforced Concrete Beams with Recycled Coarse Aggregates.” Construction and Building Materials 176 (July 2018): 593–607. doi:10.1016/j.conbuildmat.2018.05.069.

Huang, Jie, Jun Shi, Hengheng Xiao, Jiyang Shen, and Baisong Yang. “Stressing State Analysis of Reinforcement Concrete Beams Strengthened with Carbon Fiber Reinforced Plastic.” International Journal of Concrete Structures and Materials 14, no. 1 (September 14, 2020). doi:10.1186/s40069-020-00417-w.

Isenburg, J., “Finite Element Analysis of Reinforced Concrete Structures II”, ASCE, New York, NY, USA, (1993).


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DOI: 10.28991/cej-2021-03091670

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