Improvement on the Repair Effect of Electrochemical Chloride Extraction Using a Modified Electrode Configuration
AbstractTo improve the repair effect of electrochemical chloride extraction, a modified electrode configuration is applied in this investigation. In this configuration, two auxiliary electrodes placed in the anodic and cathodic electrolytes were used as the anode and cathode, respectively. Besides this, the steel in the mortar was grounded to protect it from corrosion. By a comparative experiment, the potential evolution, various ions concentrations (Cl−, OH−, Na+, and K+) in different mortar depths, the corrosion potential, and the current density of the steel were measured. The results indicate that compared to electrochemical chloride extraction with the traditional electrode configuration, this electrochemical chloride extraction method with a modified electrode configuration has a similar chloride removal ratio. Besides this, potential of steel is just about 800 mV for a saturated calomel electrode (SCE) during the treatment, which did not reach the hydrogen evolution potential. The phenomenon of the accumulation of OH−, Na+, and K+ did not occur when the modified electrode configuration is applied. Additionally, higher corrosion potentials and lower corrosion current rates were measured after performing electrochemical chloride extraction with the modified electrode configuration. Additionally, it is a short period of time for the steel to go from activation to passivation. On this basis, the modified electrode configuration may overcome the drawbacks of electrochemical chloride extraction. View Full-Text
Share & Cite This Article
Feng, W.; Xu, J.; Jiang, L.; Song, Y.; Cao, Y.; Tan, Q. Improvement on the Repair Effect of Electrochemical Chloride Extraction Using a Modified Electrode Configuration. Materials 2018, 11, 225.
Feng W, Xu J, Jiang L, Song Y, Cao Y, Tan Q. Improvement on the Repair Effect of Electrochemical Chloride Extraction Using a Modified Electrode Configuration. Materials. 2018; 11(2):225.Chicago/Turabian Style
Feng, Wei; Xu, Jinxia; Jiang, Linhua; Song, Yingbin; Cao, Yalong; Tan, Qiping. 2018. "Improvement on the Repair Effect of Electrochemical Chloride Extraction Using a Modified Electrode Configuration." Materials 11, no. 2: 225.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.