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DOWNLOADABLE HISTORICAL DOCUMENT. Cathodic protection (CP) of reinforcing steel in concrete structures. Impressed current CP for atmospherically exposed reinforced concrete. Not intended for application to prestressed concrete.
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This book deals with the different forms of corrosion for copper and its alloys. It provides previously unpublished or hard-to-find data, providing a unique reference point for data on the corrosion of copper alloys. The book's chapters cover the following topics: composition/ and properties, film formation, general, localized, and galvanic corrosion, and specific environments - underground, atmospheric, submerged. Soldered, brazed & welded joints.
2009 NACE, softbound, 369 pages
This standard provides a test method to evaluate coatings containing conductive carbon additives for use as an anode on atmospherically exposed reinforced concrete.
Test method to evaluate coatings w/conductive carbon pigmentation as Cathodic Protection (CP) anodes on atmospherically exposed reinforced concrete. Anode coatings are not to provide a protective barrier. HISTORICAL DOCUMENT
Although computational methods have been separately developed to predict corrosion and fatigue crack growth rates for metallic structures, challenges remain in implementing a methodology that considers the combined effects. In this work the output from a galvanic model is used to determine the spatial distribution of corrosion damage; providing a guide for the location of discrete corrosion damage features that can be analyzed using stress fields from structural models. In order to build confidence in this approach the galvanic models are validated by comparing predicted results to surface damage measurements from test specimens subject to ambient atmospheric exposure. There was good comparison between the predicted spatial distribution of corrosion damage and the measured surface damage profiles obtained from the galvanic test specimens. Following this exercise novel computational corrosion damage features were developed to represent simplified cracks shapes emanating from corrosion pits. Stress intensity factors (SIF) for these newly developed hybrid pit-crack features were determined and these solutions compared to cases where the pit is assumed to be an equivalent crack. The impact of the local, cavity induced stress field, on the SIF solutions is discussed. Building on these findings a fatigue crack growth simulation was performed using an initial flaw emanating from a hemispherical cavity (corrosion pit) located at the edge of hole in a plate. A reasonable comparison, of the predicted number of crack growth cycles, to available experimental test results was achieved.
A review of galvanized steel and painted galvanized steel processes is provided, as well as the fundamentals and requirements for painted galvanized steel products. The corrosion processes found with both galvanized steel and painted galvanized steels are discussed.
The US Environmental Protection Agency defines "Volatile Organic Compounds (VOC)" in 40 CFR 51.100(s) as “any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate, which participates in atmospheric photochemical reactions.”