Sacrificial Point Anodes for Cathodic Prevention of Reinforcing Steel in Concrete Repairs: Part 1—Polarization Behavior

CORROSION ◽  
10.5006/1016 ◽  
2014 ◽  
Vol 70 (3) ◽  
pp. 303-317 ◽  
Author(s):  
M.J. Dugarte ◽  
A.A. Sagüés
Keyword(s):  
Reinforcing Steel ◽  
Polarization Behavior ◽  
Cathodic Prevention

Polarization behavior of activated reinforcing steel bars in concrete under chloride environments

2018 ◽  
Vol 164 ◽  
pp. 877-887 ◽  
Author(s):  
Binbin Zhou ◽  
Xianglin Gu ◽  
Hongyuan Guo ◽  
Weiping Zhang ◽  
Qinghua Huang
Keyword(s):  
Reinforcing Steel ◽  
Polarization Behavior ◽  
Steel Bars

Effect of Anodic and Cathodic Chloride Contents on the Macrocell Corrosion and Polarization Behavior of Reinforcing Steel

2016 ◽  
Vol 22 ◽  
pp. 45-58 ◽  
Author(s):  
Zhong Lu Cao ◽  
Hao Yu Chen ◽  
Lian Yu Wei ◽  
Makoto Hibino
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structures ◽  
Chloride Content ◽  
Reinforced Concrete Structures ◽  
Reinforcing Steel ◽  
Anodic Reaction ◽  
Polarization Behavior ◽  
Mixed Control ◽  
Cement Mortars ◽  
Macrocell Corrosion

The effect of anodic and cathodic chloride contents on the macrocell corrosion and polarization behavior of reinforcing steel embedded in cement mortars were investigated and clarified. The results indicated that the higher cathodic chloride content could accelerate the cathodic reaction of cathode and make the controlling mode of macrocell corrosion changed from cathodic control to mixed control or anodic control. The higher anodic chloride content could accelerate the anodic reaction of anode and make the macrocell corrosion more controlled by cathode. These results will provide a guide to inhibiting the macrocell corrosion of reinforcing steel in concrete, which are not only useful for engineers to design and construct the new marine reinforced concrete structures, but also are helpful for engineers to repair or rehabilitate the existing chloride contaminated reinforced concrete structures, in the condition of avoiding the adverse effect of macrocell corrosion induced by the non-uniform distribution of anodic and cathodic chloride.

scholarly journals Effect of Water-Cement Ratio on the Macrocell Polarization Behavior of Reinforcing Steel

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Zhonglu Cao ◽  
Makoto Hibino ◽  
Hiroki Goda
Keyword(s):  
Polarization Resistance ◽  
Potential Difference ◽  
Reinforcing Steel ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Polarization Behavior ◽  
Effect Of Water ◽  
Cement Mortars ◽  
Macrocell Current ◽  
The Relationship

The effect of water-cement ratio on the macrocell polarization behavior of reinforcing steel embedded in cement mortars was investigated by comparing and analyzing the macrocell polarization ratios and slopes of anodic and cathodic steels. Based on the experimental results, the relationship between macrocell potential difference and macrocell current density was also analyzed, and the mechanism of macrocell polarization affected by water-cement ratio was proposed. The results indicated that the water-cement ratios had little impact on the macrocell polarization ratios of cathode and anode. The lower water-cement ratio could reduce the macrocell current by decreasing the macrocell potential difference and increasing the macrocell polarization resistance of the cathode and anode.

Modeling the Polarization Behavior of a Galvanic Point Anode - Reinforcing Steel in Concrete System

2019 ◽  
Vol 3 (13) ◽  
pp. 99-108
Author(s):  
Margareth J. Dugarte ◽  
Alberto A. Sagüés ◽  
Rodney Powers
Keyword(s):  
Reinforcing Steel ◽  
Concrete System ◽  
Polarization Behavior
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