Underground pipelines are protected by a good anticorrosion coating and cathodic protection (CP). An impact-resistant barrier coating is applied over the coating when select material backfilling is not feasible. Concerns arose that barrier materials could cause shielding of CP currents. A laboratory program was initiated to determine which materials posed a shielding problem. Experiments led to the tentative conclusion that commonly used barrier materials have tradeoffs in their physical and electrochemical properties.


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    Title :

    Shielding effects of concrete and urethane foam external pipeline barrier coatings


    Additional title:

    Abschirmeffekte durch äußere Pipeline-Schutzbeschichtungen aus Beton und Urethan-Schaum


    Contributors:

    Published in:

    Materials Performance ; 31 , 2 ; 24-29


    Publication date :

    1992


    Size :

    6 Seiten, 4 Bilder, 2 Tabellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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