2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference


Title
Experimental and Analytical Investigation into the Effect of Corrosion on the Flexural Response of Reinforced Concrete Beams


Author(s)
Mr. Wesam Njeem (Presenter)
Mr. Arnaud Vadeboncoeur, University of Ottawa
Dr. Beatriz Martin-Perez, University of Ottawa
Dr. Ahmad Jrade, University of Ottawa
Dr. Hassan Aoude, University of Ottawa
Abstract

The aim of this study is to investigate, experimentally and analytically, the effect of reinforcement corrosion on the flexural and shear behaviour of reinforced concrete beams. As part of the experimental study, four beams constructed with normal-strength concrete were tested under four-point bending. Two of the specimens were subjected to an accelerated corrosion process, to reach a target mass loss of 15% in the longitudinal and transverse steel reinforcement. The other two beams were used as benchmarks with no corrosion. As part of the analytical study the response of the beams was simulated using 2D finite element software (VecTor2) and compared to the experimental results. In addition, a parametric study was conducted using finite element analysis to further examine the effect of other variables such as: level of corrosion (15% vs. 30% mass loss) and the location of the corrosion on the steel reinforcement in the tension zone (full length, mid length and both sides length). The experimental and analytical results show that the increase of mass loss in the steel reinforcement decreases the strength and ductility of the reinforced concrete beams, regardless of the corrosion location, ultimately changing the failure mode. Lastly, the predicted results from the finite element software provide acceptable predictions compared to the experimental results.