The stopping of cracks inside a reinforced concrete pipe as a result of using cathodic protection
- Canal de Isabel II, Madrid (Spain)
- Inst. Espanol de Corrosion, Madrid (Spain)
Many pipes including reinforced and prestressed concrete, steel and cast iron, have an interior lined with a covering of mortar serving to isolate the steel from the aggressive environment surrounding it. Should this covering crack, and the fissure extend to the metal, a small anodic zone quickly forms which can lead to a process of pitting corrosion. This paper shows how a certain secondary reaction resulting from cathodic protection, such as that caused by the reduction of oxygen leading to alkalinization, can be fundamental in the filling of fissures appearing in concrete. At first, several small trial tests were performed. Later, the results are applied on an industrial scale, with satisfactory results.
- OSTI ID:
- 549909
- Report Number(s):
- CONF-970332-; TRN: IM9752%%132
- Resource Relation:
- Conference: Corrosion 97. 52. annual corrosion conference of the National Association of Corrosion Engineers: economics and performance - bridging the gap and NACExpo, New Orleans, LA (United States), 9-14 Mar 1997; Other Information: PBD: 1997; Related Information: Is Part Of Corrosion/97 conference papers; PB: [4584] p.
- Country of Publication:
- United States
- Language:
- English
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