Cathodic Protection of Reinforced Concrete Structures in The Netherlands — Experience and Developments

Author(s):  
R. B. Polder
2020 ◽  
Vol 2020 ◽  
pp. 1-13 ◽  
Author(s):  
Yingwu Zhou ◽  
Lili Sui ◽  
Feng Xing ◽  
Xiaoxu Huang ◽  
Yaowei Zheng ◽  
...  

The dual function of a carbon fiber-reinforced polymer (CFRP) bar working as reinforcement and impressed current cathodic protection (ICCP) anode for reinforced concrete structures has been proposed and researched in this paper. The ICCP tests with different current densities and polarization durations were first conducted for the concrete with high chloride content. After the ICCP application, pull out tests were then performed to investigate the bond behaviors of CFRP bars. Experimental results have shown the effectiveness of the new-type ICCP system with the CFRP bar as the anode on corrosion protection. The ICCP system provided electrons to the steel bar continuously and brought the potential of the steel bar down to the immunity region. Under the anodic polarization with a large current density of 100 mA/m2, the CFRP bar-concrete interface presented acidification and the chemical adhesion on the interface was decreased significantly. However, for cases in the experiment, the ICCP application had an insignificant influence on the ultimate bond strength.


Author(s):  
A. Finkelshteyn ◽  
A.L. Bimman

Abstract Considering the number of concrete structures such as bridges, overpasses, trestles etc., their maintenance and repair form a significant part of the highway administration budget. Cathodic protection is becoming more popular because it helps reduce maintenance and renovation costs. Arc-sprayed zinc and zinc/aluminum alloy coatings are widely used in cathodic protection systems. The surface preparation of concrete is critical to the quality of coating and hence, the quality of the cathodic protection. Typically, sandblasting with surface brushing is used as preparation. This method has several technical, economic and ecological deficiencies: weather/humidity limitations, difficult removal of organic contaminants from the surface, an irrevocable loss of blasting media, high dust level, etc. An objective of this proceeding is to describe a plasma cleaning process as a successful alternative to sandblasting and to show the possibilities of combined plasma cleaning/coating process for the cathodic protection of reinforced concrete structures. This environmentally friendly process will result in better anodic coatings at lower cost and fewer concrete structure repairs.


1993 ◽  
Vol 35 (5-8) ◽  
pp. 1633-1639 ◽  
Author(s):  
L Bertolini ◽  
F Bolzoni ◽  
A Cigada ◽  
T Pastore ◽  
P Pedeferri

1989 ◽  
Vol 36 (4) ◽  
pp. 4-7 ◽  
Author(s):  
Mohammad Golam Ali ◽  
Rasheeduzzafar ◽  
Fahd H. Dakhil

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