Experimental galvanic anode for cathodic protection of Bridge A12112

Details

• Creators:
  Wenzlick, John D.
• Corporate Creators:
  Missouri. Dept. of Transportation. Organizational Results
• Subject/TRT Terms:
  • Cathodic protection
  • Galvanic corrosion
  • Reinforced concrete bridges
  • Cathodic Protection
  • Galvanic
  • Reinforcing Steel
  • Corrosion
  • Concrete Overlay
• Publication/ Report Number:
  OR 11-013
• Resource Type:
  Tech Report
• Geographical Coverage:
  Missouri
• Edition:
  Final
• Corporate Publisher:
  Missouri. Dept. of Transportation. Organizational Results
• Abstract:
  Cathodic Protection (CP) has been used by MoDOT for more than 30 years to stop ; corrosion of reinforced concrete bridge decks. These systems require power from local electrical ; connections. A galvanic system uses the difference in electrical potential between the anode and ; the reinforcing steel in the deck to generate enough current itself to cathodically protect the steel. ; Corrpro Cos. Inc. approached MoDOT with a new galvanic CP anode, at no cost, for installation ; on a portion of bridge deck. The anode was installed along with a concrete overlay in 2005 and ; monitored for five years. The anode’s power output was adequate to protect the reinforcing steel ; but so reactive when installed in the wet concrete that it caused disbonding of the overlay. It is ; not recommended for future use in its current configuration. This was the best galvanic anode for ; bridge decks developed so far; a good galvanic anode for bridges is still needed.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18638/dot_18638_DS1.pdf
• File Type:
  [PDF - 1.64 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:502498616f223461912bd0c8413337d984d47c3a6e17300808bf995549ae4dde