Effect of DC Current and NaCl Ratio on Accelerated Corrosion at Different Diameter of Steels

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Ismail Hocaoglu
Ilker Bekir Topcu


The purpose of placing steel in reinforced concrete structures is to increase the tensile strength of concrete. The diameters of the reinforcements steel in the concrete decrease as a result of electro-chemical reactions. Therefore; corrosion of reinforcement steels is the most important problem in the buildings. As a result of some experimental study, the ductility and ultimate load-carrying capacity decreases as the corrosion rate was increased. In this study, reinforcements steel with diameters of ø12, ø14 and ø16, respectively, were exposed to accelerated corrosion by applying 18 V DC stress intensity for 18 hrs. The solutions whose NaCl ratios are 3, 3.5 and 4%, respectively, were prepared to investigate the effect of NaCl on accelerated corrosion on reinforcement steel. As a result; it has been observed that as the NaCl ratio decreases and reinforcement steel diameter increases, the corrosion rate decreases.

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