Characterization of Impressed Current Technique to Model Corrosion of Reinforcement in Concrete

Authors

  • Abu Zakir Morshed Department of Civil Engineering, Khulna University of Engineering & Technology, Khulna - 9203
  • Sheikh Shakib Department of Civil Engineering, Khulna University of Engineering & Technology, Khulna - 9203
  • Tanzim Jahin Department of Civil Engineering, Khulna University of Engineering & Technology, Khulna - 9203

DOI:

https://doi.org/10.3329/jes.v11i1.49551

Keywords:

Corrosion; Impressed Current Technique; Minimum Immersion Time; Optimum Chloride Content.

Abstract

Corrosion of reinforcement is an important durability concern for the structures exposed to coastal regions. Since corrosion of reinforcement involves long periods of time, impressed current technique is usually used to accelerate the corrosion of reinforcement in laboratories. Characterization of impressed current technique was the main focus of this research,which involved determination of optimum chloride content and minimum immersion time of specimens for which the application of Faraday’s law could be efficient. To obtain optimum chloride content, the electrolytes in the corrosion cell were prepared similar to that of concrete pore solutions. Concrete prisms of 200 mm by 200 mm by 300 mm were used to determine the minimum immersion time for saturation. It was found that the optimum chloride content was 35 gm/L and the minimum immersion time for saturation was 140 hours. Accounting the results, a modified expression based on Faraday’s law was proposed to calculate weight loss due to corrosion.

Journal of Engineering Science 11(1), 2020, 93-99

Abstract
170
PDF
164

Downloads

Published

2020-10-05

How to Cite

Morshed, A. Z., Shakib, S., & Jahin, T. (2020). Characterization of Impressed Current Technique to Model Corrosion of Reinforcement in Concrete. Journal of Engineering Science, 11(1), 93–99. https://doi.org/10.3329/jes.v11i1.49551

Issue

Section

Articles