Title: Mechanical Properties of Reinforcing Steel Bars Corroded at Different Levels
Author(s): Naseeruddin Haris and Sangeeta Gadve
Publication: Materials Journal
Appears on pages(s): 109-120
Keywords: anodic current; corrosion; experimentation; levels of corrosion; mechanical properties; reinforcing bar; tensile test
Corrosion of reinforcing steel bars in concrete has always been one of the major causes of structural failure. This paper experimentally investigates the effect of corrosion on the mechanical properties of reinforcing bars. In the experiment, an anodic current is impressed at the specific current density to reinforcing bars of various diameters to attain different levels of corrosion. The correlation of actual mass loss with predicted mass loss, as per Faraday’s law, and the equivalent section area loss are reported. Further, the uniaxial
tensile test is performed on these corroded specimens to obtain load-displacement relations. Based on the test results, stresses and strains are evaluated for all the specimens, and their responses to induced corrosion are reported. Statistical models are developed for predicting yield stress, ultimate stress, and percentage elongation in reinforcing bars that are exposed to different levels of corrosion.