Journal Published Online: 18 August 2017
Volume 6, Issue 1

Combined Structure Geometry and Anode Placement Effects on Cathodic Protection Effectiveness

CODEN: MPCACD

Abstract

An impressed current cathodic protection system was applied to an uncoated test sample. The test sample was chosen to represent an essential right angle feature of a common structure. Anode placement was quantitatively shown to affect the resulting surface polarization distribution. Two distinct types of local polarization depletion zones have been demonstrated. These regions of lesser polarization represent a locally insufficient amount of cathodic protection compared to criteria designated values. Conversely, for geometrically complex structures containing sharp features, the possibility of locally evolving hydrogen gas is also discussed.

Author Information

Marsh, Charles P.
U.S. Army, Construction Engineering Research Laboratory, Champaign, IL, USA
Navarro, Aidnel G.
U.S. Army, Construction Engineering Research Laboratory, Champaign, IL
Weber, Robert
Contractor with HX5 LLC, Fort Walton Beach, FL
Carlson, Thomas A.
U.S. Army, Construction Engineering Research Laboratory, Champaign, IL
Hock, Vincent F.
U.S. Army, Construction Engineering Research Laboratory, Champaign, IL
McInerney, Michael K.
U.S. Army, Construction Engineering Research Laboratory, Champaign, IL
Pages: 12
Price: $25.00
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Details
Stock #: MPC20160101
ISSN: 2379-1365
DOI: 10.1520/MPC20160101