<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Deficient or deteriorating reinforced-concrete columns in many existing structures have to be strengthened using economical, efficient, and fast methods. In the present study, different strengthening techniques to improve the load-carrying capacity of reinforced concrete (RC) columns have been compared. Five groups of fifteen square reinforced concrete columns (150 mm × 150 mm × 600 mm) and one group of three circular columns ( φ 170 mm) that have cross-sectional areas equivalent to those of the square columns were cast from normal-strength concrete. The test program was designed to examine the behavior of columns strengthened by carbon fiber-reinforced polymer (CFRP), steel jacketing, ferro cement, steel fibers, and silica fumes under cyclic axial compression. The efficiency of each strengthening method in increasing the column’s axial capacity, energy absorption, and ductility was studied using the experimental data. The test results showed that strengthening the columns could significantly enhance their load-carrying capacity and failure strains.</p></abstract>

Deficient or deteriorating reinforced-concrete columns in many existing structures have to be strengthened using economical, efficient, and fast methods. In the present study, different strengthening techniques to improve the load-carrying capacity of reinforced concrete (RC) columns have been compared. Five groups of fifteen square reinforced concrete columns (150 mm × 150 mm × 600 mm) and one group of three circular columns ( φ 170 mm) that have cross-sectional areas equivalent to those of the square columns were cast from normal-strength concrete. The test program was designed to examine the behavior of columns strengthened by carbon fiber-reinforced polymer (CFRP), steel jacketing, ferro cement, steel fibers, and silica fumes under cyclic axial compression. The efficiency of each strengthening method in increasing the column’s axial capacity, energy absorption, and ductility was studied using the experimental data. The test results showed that strengthening the columns could significantly enhance their load-carrying capacity and failure strains.

Structural Behavior of RC Columns Improved by Different Strengthening Techniques

COMSATS University Islamabad – Sahiwal Campus

Slovak Journal of Civil Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Structural Behavior of RC Columns Improved by Different Strengthening Techniques"}

Deficient or deteriorating reinforced-concrete columns in many existing structures have to be strengthened using economical, efficient, and fast methods. In...

Structural Behavior of RC Columns Improved by Different Strengthening Techniques

Published Online: Oct 06, 2020

Page range: 20 - 28

DOI: https://doi.org/10.2478/sjce-2020-0020

Keywords
Strengthening, CFRP wraps, Ferrocement, Steel jacketing, Silica fume, Steel fibers

© 2020 Shah Rukh Tariq et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Structural Behavior of RC Columns Improved by Different Strengthening Techniques

Published Online: Oct 06, 2020

Page range: 20 - 28

DOI: https://doi.org/10.2478/sjce-2020-0020

KeywordsStrengthening, CFRP wraps, Ferrocement, Steel jacketing, Silica fume, Steel fibers

© 2020 Shah Rukh Tariq et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Strengthening, CFRP wraps, Ferrocement, Steel jacketing, Silica fume, Steel fibers