Sayan Sirimontree1 , Suraparb Keawsawasvong1 , and Chanachai Thongchom This email address is being protected from spambots. You need JavaScript enabled to view it.1

1Department of Civil Engineering, Thammasat School of Engineering, Thammasat University, Pathumthani 12120, Thailand


 

Received: November 29, 2020
Accepted: January 1, 2021
Publication Date: June 1, 2021

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.6180/jase.202106_24(3).0015  


ABSTRACT


This paper presents an experimental study on reinforced concrete columns strengthened with prestressed steel straps. A total of five specimens is constructed. A cross-section of all specimens is 150x150 millimeters. A height of all specimens is 1.20 meters. A studied variable is a spacing of steel straps, which are 150 and 75 millimeters. All columns are subjected to a compressive force without an eccentric load. The experimental data is recorded in the term of the load-deformation relationships, and also modes of failure. Based on the experimental data, the reinforced concrete column strengthened with steel straps can enhance the axial load bearing capacity by 30 to 33 percent and can increase the ductility by 71 to 118 percent. A spacing of steel straps has no significant influence on an axial load bearing capacity, but it affects the ductility when compared to the control specimen.


Keywords: Column, Steel strap, Confinement, Reinforced concrete, Strengthening


REFERENCES


  1. [1] S M Mourad and M J Shannag. Repair and strengthening of reinforced concrete square columns using ferrocement jackets. Cement and concrete composites, 34(2):288– 294, 2012.
  2. [2] S. M. Mourad and M. J. Shannag. Repairing reinforced concrete rectangular columns using ferrocement laminates. In Concrc - Proceedings of Concrete Solutions, 4th International Conference on Concrete Repair, pages 757– 763, 2012.
  3. [3] Sayan Sirimontree. Strengthening of Reinforced Concrete Column via Ferrocement Jacketing. American Transactions on Engineering & Applied Sciences, 4(1):39– 47, 2015.
  4. [4] Pitcha Jongvivatsakul, Linh V.H. Bui, Theethawachr Koyekaewphring, Atichon Kunawisarut, Narawit Hemstapat, and Boonchai Stitmannaithum. Using Steel Fiber-Reinforced Concrete Precast Panels for Strengthening in Shear of Beams: An Experimental and Analytical Investigation. Advances in Civil Engineering, 2019, 2019.
  5. [5] Pitcha Jongvivatsakul, Chung Nguyen Thi, Ganchai Tanapornraweekit, and Linh Van Hong Bui. Mechanical properties of aramid fiber-reinforced composites and performance on repairing concrete beams damaged by corrosion. Songklanakarin Journal of Science and Technology, 42(3):637–644, 2020.
  6. [6] Akhrawat Lenwari, Jaroon Rungamornrat, and Supanat Woonprasert. Axial Compression Behavior of Fire-Damaged Concrete Cylinders Confined with CFRP Sheets. Journal of Composites for Construction, 20(5):04016027, oct 2016.
  7. [7] Nabil Al-Akhras and Mohammed Al-Mashraqi. Repair of corroded self-compacted reinforced concrete columns loaded eccentrically using carbon fiber reinforced polymer. Case Studies in Construction Materials, 14, 2021.
  8. [8] Ramesh Gopal, S. Krishnachandran, and B. H. Bharatkumar. Monotonic and cyclic response of hybrid fibre reinforced polymer reinforcing system for reinforced concrete columns under eccentric loading. Advances in Structural Engineering, 23(16):3456–3468, dec 2020.
  9. [9] Liu Jin, Huiming Chen, Zuohu Wang, and Xiuli Du. Size effect on axial compressive failure of CFRPwrapped square concrete columns: Tests and simulations. Composite Structures, 254, 2020.
  10. [10] Guoqiang Li, Scott Hedlund, Su Seng Pang, Walid Alaywan, John Eggers, and Christopher Abadie. Repair of damaged RC columns using fast curing FRP composites. Composites Part B: Engineering, 34(3):261– 271, 2003.
  11. [11] Anh Duc Mai, M. Neaz Sheikh, Kento Yamakado, and Muhammad N. S. Hadi. Nonuniform CFRP Wrapping to Prevent Sudden Failure of FRP Confined Square RC Columns. Journal of Composites for Construction, 24(6):04020063, dec 2020.
  12. [12] S. J. Pantazopoulou, J. F. Bonacci, S. Sheikh, M. D. A. Thomas, and N. Hearn. Repair of Corrosion-Damaged Columns with FRP Wraps. Journal of Composites for Construction, 5(1):3–11, feb 2001.
  13. [13] Javad Shayanfar, Mohammadali Rezazadeh, and Joaquim A. Barros. Analytical Model to Predict Dilation Behavior of FRP Confined Circular Concrete Columns Subjected to Axial Compressive Loading. Journal of Composites for Construction, 24(6):04020071, dec 2020.
  14. [14] Koosha Khorramian and Pedram Sadeghian. Experimental Investigation of Short and Slender Rectangular Concrete Columns Reinforced with GFRP Bars under Eccentric Axial Loads. Journal of Composites for Construction, 24(6):04020072, dec 2020.
  15. [15] Amr E. M. Abdallah and Ehab El-Salakawy. Confinement Properties of GFRP-Reinforced Concrete Circular Columns under Simulated Seismic Loading. Journal of Composites for Construction, 25(2):04020088, apr 2021.
  16. [16] Linh Van Hong Bui, Boonchai Stitmannaithum, and Pitcha Jongvivatsakul. Comprehensive investigation on bond mechanism of embedded through-section fiberreinforced polymer bars to concrete for structural analysis. Journal of Building Engineering, 29, 2020.
  17. [17] Akhrawat Lenwari, Chanachai Thongchom, and Riyad S. Aboutaha. Cyclic Flexural Performance of FireDamaged Reinforced Concrete Beams Strengthened with Carbon Fiber-Reinforced Polymer Plates. ACI Structural Journal, 117(6), 2020.
  18. [18] Ching Chiaw Choo, Issam E. Harik, and Hans Gesund. Strength of rectangular concrete columns reinforced with fiber-reinforced polymer bars. ACI Structural Journal, 103(3):452–459, 2006.
  19. [19] Guohua Xing, Osman E Ozbulut, Mohammed Ali AlDhabyani, Zhaoqun Chang, and Sherif M Daghash. Enhancing flexural capacity of RC columns through near surface mounted SMA and CFRP bars. Journal of Composite Materials, 54(29):4661–4676, dec 2020.
  20. [20] Ahmed Shaban Abdel-Hay and Yasser Abdel Ghany Fawzy. Behavior of partially defected R.C columns strengthened using steel jackets. HBRC Journal, 11(2):194–200, aug 2015.
  21. [21] Chau Khun Ma, Sofrie Chin Siew Yung, Nazirah Apandi, Abdullah Zawawi Awang, and Wahid Omar. Innovative Concrete Repairing Technique Using Post Tensioning Steel Straps. In MATEC Web of Conferences, volume 103, 2017.
  22. [22] A. M. Tarabia and H. F. Albakry. Strengthening of RC columns by steel angles and strips. Alexandria Engineering Journal, 53(3):615–626, 2014.
  23. [23] Taiwantrade: Sourcing quality Taiwan products, suppliers, manufacturers and exporters.

 


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