Consumable and non-consumable thermal spray anodes for impressed current cathodic protection of reinforced concrete structures

Conference · Wed Dec 31 23:00:00 EST 1997

OSTI ID:351786

Covino, Jr, B S; Cramer, S D; Bullard, Sophie J; Holcomb, Gordon R; Collins, Wesley K ^[1]; McGill, G E ^[2]

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1. Dept. of Energy, Albany, OR (United States). Albany Research Center
2. Oregon Dept. of Transportation, Salem, OR (United States)

A comparison is presented of some of the differences between thermal spray Zn, a consumable anode, and catalyzed thermal spray Ti, a non-consumable anode, used for impressed current cathodic protection of reinforced concrete structures. The thermal spray process for both Ti and Zn is compared using the spray parameters, atomizing gases, spray rate, and cost. The thermal spray Ti and Zn coatings are compared in terms of physical properties, composition, and structure. Results of accelerated laboratory experiments are presented and comparisons between Ti and Zn are made on the effect of electrochemical aging on voltage requirements, bond strength, coating resistivity, water permeability, and anode-concrete interracial composition.

• Research Organization: ARC (Albany Research Center (ARC), Albany, OR)
• Sponsoring Organization: USDOE - Office of Fossil Energy (FE); Oregon Department of Transportation, Salem, OR
• OSTI ID: 351786
• Report Number(s): DOE/ARC-1998-023; CONF-980316--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANODES
CATHODIC PROTECTION
COMPARATIVE EVALUATIONS
REINFORCED CONCRETE
SPRAY COATING
TITANIUM
ZINC
bond strength
bridge
catalyst
cathodic protection
electrochemical aging
impressed current
interfacial chemistry
pH
resistivity
steel-reinforced concrete
thermal spray
titanium
water permeability
zinc