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Published: Građevinar 73 (2021) 8
Paper type: Scientific research paper
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Quasi-static tests on RC building columns strengthened with CFRP

Golubka Nechevska-Cvetanovska, Artur Roshi, Julijana Bojadjieva, Jordan Bojadjiev, Zoran Trajcevski

Abstract

To explore the possibilities and benefits of using CFRP (Carbon Fibre Reinforced Polymers) in strengthening RC building columns, quasi-static tests (compression and bending) were carried out at the Institute of Earthquake Engineering and Engineering Seismology - IZIIS, Skopje by variation of concrete class, reinforcement percentage and by using various strengthening technologies. Some recommendations and outcomes regarding the approach, technology and conclusions drawn from practical application of these materials, are given. Based on the analysis of values obtained from nonlinear static and nonlinear time history analyses, it can be concluded that the ductility capacity for displacement of model strengthened with CFRP is greater by 60 %, while its strength capacity is greater by 7.7 % when compared to the values obtained for the model without CFRP. It can generally be concluded that CFRP systems are a very practical tool for strengthening and retrofitting concrete structures, as they can extensively improve flexural strengthening, shear strengthening, column confinement, and ductility.

Keywords
RC building columns, quasi-static tests, innovative materials, CFRP, strength, ductility

HOW TO CITE THIS ARTICLE:

Nechevska-Cvetanovska, G., Roshi, A., Bojadjieva, J., Bojadjiev, J., Trajcevski, Z.: Quasi-static tests on RC building columns strengthened with CFRP, GRAĐEVINAR, 73 (2021) 8, pp. 805-818, doi: https://doi.org/10.14256/JCE.3087.2020

OR:

Nechevska-Cvetanovska, G., Roshi, A., Bojadjieva, J., Bojadjiev, J., Trajcevski, Z. (2021). Quasi-static tests on RC building columns strengthened with CFRP, GRAĐEVINAR, 73 (8), 805-818, doi: https://doi.org/10.14256/JCE.3087.2020

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This paper is licensed under a Creative Commons Attribution 4.0 International License.
Authors:
IMG 5069
Golubka Nechevska-Cvetanovska
Ss Cyril and Methodius University in Skopje , R.N. Macedonia
Institute of Earthquake Engineering an Engineering Seismology- IZIIS-Skopje
Arturi 2 copy
Artur Roshi
Metropolitan University, Tirana, Albania
JulijanaBojadjieva WEB
Julijana Bojadjieva
Ss Cyril and Methodius University in Skopje
Institute of Earthquake Engineering and Engineering Seismology – IZIIS, Skopje
North Macedonia
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Jordan Bojadjiev
International Balkan University, Skopje, R.N.Macedonia
5. Zoran Trajchevski
Zoran Trajcevski
Chakar&Partners – Skopje, R.N.Macedonia