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Experimental and Analytical Codes Comparative Study for Enhanced BFRP R.C. Columns Under Different Types of Loading


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DOI: https://doi.org/10.15866/irece.v14i3.22882

Abstract


In this study, the most modern Fiber-Reinforced Polymer (FRP) composites, Basalt Fiber-Reinforced Polymer (BFRP) bars, have been used to reinforce concrete columns as main longitudinal reinforcement bars, under the effect of both concentric and eccentric loading setup, 50 mm from Reinforced Concrete (R.C.) column center. Eight full-scale R.C. columns with longitudinal steel bars or BFRP bars have been tested. The spacing between the mild steel stirrups has been 200 mm. Some of the R.C. columns have been enhanced externally with BFRP wrapping sheets as strips with a width of 100 mm and at a spacing of 200 mm measured from the BFRP wrapping sheet’s center and arranged between mild steel stirrups in order to minimize the free length of confinement to study the effect of BFRP wrapping sheets in enhancing of concrete column capacity. The test results have confirmed the significant enhancement in concrete confinement efficiency in BFRP R.C. columns, especially in the concentric case. An analytical study has been carried out to compare the design equations in different codes with each other. In addition, the obtained results yield a proposed design equation for the R.C. column with BFRP bars and strengthened externally with BFRP sheets.
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Keywords


BFRP; R.C. Columns; Loading Conditions; Design Equations; Analytical Analysis

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References


Gouda Ghaniem, Nagi Fouad, Tarek Ali, Sameh Yehia, Behavior of Short RC Columns Reinforced with FRP Bars, News of the Kazan State University of Architecture and Engineering Journal, ISSN:2073-154X, 2(12), 2009.

Sameh Yehia, Experimental and Theoretical Study on Strengthened Low Compressive Strength Deficient Columns, International Journal of Engineering Research (IJER), Volume 7, Issue 4, April 2018.
https://doi.org/10.5958/2319-6890.2018.00097.1

Nouran ElMessalami, Farid Abed, Ahmed El Refai, Response of concrete columns reinforced with longitudinal and transverse BFRP bars under concentric and eccentric loading, Composite Structures, Volume 255, 2021.
https://doi.org/10.1016/j.compstruct.2020.113057

Yehia A. Kotp, Omar A. Farghal, Mohammed F. M. Fahmy, Behavior of Rectangular RC Columns Confined with BFRP sheets Subjected to Axial Loading, IJEDR 2018, Volume 6, Issue 4.

Khalifa, A., New Strengthening Technique Using FRP to Improve the Confinement Effectiveness of the Rectangular Columns, (2014) International Review of Civil Engineering (IRECE), 5 (1), pp. 19-31.

Shbeeb, N., Barham, W., Barsneh, H., Nonlinear Finite Element Analysis of Concrete Columns Confined by Carbon Fiber Reinforced Polymer Sheets, (2022) International Review of Civil Engineering (IRECE), 13 (4), pp. 275-289.
https://doi.org/10.15866/irece.v13i4.19631

Yu Tang, Zeyang Sun, Yang Wei, Xingxing Zou, Compressive behavior and design method of BFRP bars constrained with a BFRP spiral with different spacings in concrete members, Engineering Structures, Volume 268, 1 October 2022, 114757.
https://doi.org/10.1016/j.engstruct.2022.114757

Laith AlNajmi and Farid Abed, Evaluation of FRP Bars under Compression and Their Performance in RC Columns, Materials (Basel). 2020 Oct; 13(20): 4541.
https://doi.org/10.3390/ma13204541

Ahmad Tarawneh a, Sereen Majdalaweyh, Design and reliability analysis of FRP-reinforced concrete columns, Structures, Volume 28, December 2020, Pages 1580-1588.
https://doi.org/10.1016/j.istruc.2020.10.009

ArafaM.A. Ibrahim, MohamedF.M. Fahmy, Zhishen Wu, 3D finite element modeling of bond-controlled behavior of steel and basalt FRP-reinforced concrete square bridge columns under lateral loading, Composite Structures, Volume 143, 20 May 2016, Pages 33-52.
https://doi.org/10.1016/j.compstruct.2016.01.014

Hannibal Ólafsson, Eyþór Rafn Þórhallsson, Basalt fiber bar Reinforcement of concrete structures, Conference: Basalt fiber Seminar, Reykjavik University.

Tin, H.-X.; Thuy, N.-T.; Seo, S.-Y. Structural Behavior of RC Column Confined by FRP Sheet under Uniaxial and Biaxial Load, Polymers 2022, 14, 75.
https://doi.org/10.3390/polym14010075

S. Mohan, Experimental Study on RC Columns Wrapped With Hybrid FRP Sheets, Engineering, Published 2016, Corpus ID: 220346900.

Sameh Yehia, Behavior of Low Compressive Strength Short Columns Strengthened with External GFRP Strips/Jacket Techniques, International Journal of Technology Enhancements and Emerging Engineering Research, VOL 3, ISSUE 04 1 ISSN 2347-4289.

ES:4756-1/2022, Egyptian Standards for Cement.

ES:1109/2021, Egyptian Standards for Natural Aggregate.

ESS:262/2021, Egyptian Standards for Steel Reinforcement.

ASTM A615, A615M-04A, Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement.

ECP:203-2020, Egyptian Code of Practice for Reinforced Concrete Construction.

ACI:318-19, Building Code Requirements for Structural Concrete and Commentary," ACI Committee 318, American Concrete Institute.

ASTM D7205/D7205M, Standard Test Method for Tensile Properties of Fiber Reinforced Polymer Matrix Composite Bars, 2021 Edition.

Sayed Abd El-Baky, Sameh Yehia, Arafa M. A. Ibrahim and Abdullah Moubarak, Behavior of Columns Reinforced with BFRP Bars in case of Centric and Eccentric Conditions, International Journal of Scientific & Engineering Research -IJSER, Volume 12, Issue 1, January 2021, (ISSN: 2229-5518).

BS:8500, British Standard for Concrete Mix Design, Concrete, Part 2.

BS:12390, British Standard for Testing Hardened Concrete.

Sikadur 330 component-A+B, www.sika.com.

ACI:440.2R-17, "Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures," ACI Committee 440, American Concrete Institute.

CSA A23.3‐19, National Building Code of Canada, for the design and strength evaluation of structures of reinforced and prestressed concrete and plain concrete elements.

CSA S806-12, National Building Code of Canada, for Design and Construction of Building Structures with Fibre-Reinforced Polymers.

H. Tobbi, A.S. Farghaly, B. Benmokrane, Behavior of concentrically loaded fiber reinforced polymer reinforced concrete columns with varying reinforcement types and ratios, ACI Struct. J. 111 (2) (2014) 375.
https://doi.org/10.14359/51686528

Ana de Diego, Sonia Martinez, Viviana Jacqueline Castro, Luis Echevarr, Francisco Javier Barroso, José Pedro Gutiérrez, Experimental investigation on the compressive behavior of FRP‑confined rectangular concrete columns, Archives of Civil and Mechanical Engineering (2022) 22:131.
https://doi.org/10.1007/s43452-022-00450-4

Nouran Elmessalami, Ahmed El Refai, Farid Abed, Fiber-reinforced polymers bars for compression reinforcement: A promising alternative to steel bars, Construction and Building Materials, Volume 209, 2019.
https://doi.org/10.1016/j.conbuildmat.2019.03.105


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