| Autor: |
Polder, R.B., Peelen, W.H.A., Schuten, G. |
| Přispěvatelé: |
TNO Bouw |
| Jazyk: |
angličtina |
| Rok vydání: |
2003 |
| Předmět: |
|
| Zdroj: |
EFC Publication Series, 1-10 |
| Popis: |
Samples were studied of conductive coatings that had served as anode material in concrete cathodic protection (CP) systems in Norway and The Netherlands for up to about 9 years. Techniques used were light microscopy and scanning electron microscopy (SEM), carried out on thin section samples of about 25 μm thickness. Observation of the coating/concrete interface revealed that the depth of dissolution due to acid formation in the interface was less than 10 μm according to light microscopy and less than 1 μm by SEM. This suggests that the service life of a CP system based on the investigated conductive coating is not limited by acid production caused by current flow. Looking at the good interfacial properties of the 9 year old samples, the service life expectation is well over 10 years. Loss of bond due to mechanical or thermo-mechanical factors may be more critical than chemical effects associated with the flow of protection current |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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