Initial Analysis of Cathodic Protection Systems on U.S. 87 Railroad Overpass Bridge: Big Spring, Texas

Details

• Creators:
  Parker, Harry W. ; Nash, Phillip T. ; Feingold, Robert W.
• Corporate Creators:
  Texas Tech University. College of Engineering
• Corporate Contributors:
  Texas Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Anodes Bridge Decks Cathodic Protection Corrosion Data Collection Overpasses Performance Railroads Reinforcement (Engineering)
• Publication/ Report Number:
  500-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Texas
• Edition:
  Interim: March 1992 - May 1992
• Corporate Publisher:
  Texas Tech University. College of Engineering
• Abstract:
  Five individual cathodic protection systems were installed on the U.S. 87 Missouri-Pacific Railroad overpass structure in Big Spring, Texas. The cathodic protection systems were installed in October 1988 as a demonstration project to compare the various systems. Three distributed anode types were used to protect the bridge deck: (1) titanium mesh; (2) conductive polymer; and (3) carbon strand. A hot-sprayed zinc conductive coating anode was applied to sidewalks and a median on the bridge deck, and a conductive paint anode was applied to a bridge bent. Performance data have been collected for each system since installation. The titanium mesh anode continues to function while the conductive polymer anode has failed, and the carbon strand anode exhibits instability. The not-sprayed zinc anode system failed early in the study and the conductive paint anode system shows signs of failure.
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4bd100870c07c3d81639153208437f37b1e9b701851939aa28959def76cc53846accb99e682170fc254b726225a01c04669b516f16e15917d4698c38c6c610a5
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86208/dot_86208_DS1.pdf
• File Type:
  [PDF - 1.56 MB ]