Flexural Strengthening of Reinforced Concrete Beams by Carbon Bars

  • Salman Hadi Eabdallah, Hassanien Mohammed Dhiab

Abstract

This experimental study attempts to investigate the flexural behavior of simply supported reinforced concrete (RC) beams strengthened by near-surface-mounted steel and CFRP bars. The tests were conducted on 13 2600-mm specimens with cross-sectional dimensions of (200×300) mm. The longitudinal reinforcement of all beams consisted of four 10 mm steel bars in the top and bottom of the beam. To ensure that the beams would fail under flexure rather than shear, 10 mm steel bar stirrups were spaced at 100 mm c/c over the entire beam length. The specimens are divided into three groups. In each group, one specimen was not strengthened and was considered a control beam. The other specimens were strengthened by near-surface-mounted bars with different numbers and diameters, and material types. The test was conducted under two-point loads, applied at the center with spacing (750 mm). The main investigated characteristics were cracking and ultimate loads, crack width, displacement, and failure modes. From the experiments, all the strengthened beams achieved a significant enhancement in ultimate flexural strength by approximately 125%, 145%, and 133.33% relative to the control beams.

Published
2021-12-01
How to Cite
Salman Hadi Eabdallah, Hassanien Mohammed Dhiab. (2021). Flexural Strengthening of Reinforced Concrete Beams by Carbon Bars. Design Engineering, 1317 - 1325. Retrieved from http://www.thedesignengineering.com/index.php/DE/article/view/7082
Section
Articles