Effect of Interrupting Electricity Period on Electrochemical Chloride Extraction of Reinforced Concrete

Abstract:

Electrochemical chloride extraction – ECE is an effective method to rehabilitate reinforced concrete structure, which has been corroded. This study investigated concentration of chloride remained in concrete and half-cell potential of the steel reinforcement after ECE using interrupting period of electricity current. Efficiency of ECE using Ca (OH)₂ was surveyed with two current density of 0.5 and 1A/m². In this study, ECE treatment was proceeded intermittently in approximately 8 weeks. Results pointed out that chloride concentration decreased to 30 – 60% significantly, especially at in the vicinity of reinforcing steel. Simultaneously, half-cell potential of the steel reinforcement after 4 weeks halted treatment stabilizes in low-corrosion rate.

• Periodical: Applied Mechanics and Materials (Volumes 754-755)
• Pages: 342-347
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.754-755.342
• Online since: April 2015
• Authors: Mien Van Tran*, Dong Viet Phuong Tran, Mohd Mustafa Al Bakri Abdullah
• Keywords: Corrosion, Current Density, Electrochemical Chloride Extraction, Half-Cell Potential

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