CORROSION CONTROL STUDIES FOR A RAPID TRANSIT SYSTEM

PROTECTION OF THE SAN FRANCISCO RAPID TRANSIT SYSTEM FROM CORROSION WAS STUDIED. PROBLEMS INCLUDED HIGH WATER TABLES, DISSOLVED SALTS, VARIED ACIDITY, HUMID, SALT-LADEN ATMOSPHERES, AND STRAY CURRENTS. SOILS WERE TESTED FOR CHEMICAL CONTENT, BACTERIAL ACTIVITY AND ELECTRICAL RESISTANCE. DESIGNS FOR THE PROPOSED STEEL, CAST IRON AND PRECAST CONCRETE SEGMENTS WERE EXAMINED FOR CORROSION CONTROL AND PROTECTIVE COATING POSSIBILITIES AND WERE EVALUATED FOR CATHODIC PROTECTION. HIGH ELECTRICAL RESISTIVITY AND LONG TIME DURABILITY WERE SOUGHT FOR THE PROTECTIVE COATINGS. THE FAVORED COATING WAS A PRIMER FOLLOWED BY FIBERGLASS REINFORCED HOT COAL TAR ENAMEL.

• Supplemental Notes:
  • Vol 5, No 11, PP 16-19
• Publication Date: 1966-11

Media Info

• Serial:
  • Materials Protection
  • Publisher: National Association of Corrosion Engineers

Subject/Index Terms

• TRT Terms: Cast iron; Coal tars; Corrosion protection; Crash investigation; Design; Enamels; Fiberglass; Precast concrete; Primers; Protective coatings; Rapid transit; Soil tests; Steel; Studies
• Uncontrolled Terms: Design features
• Geographic Terms: San Francisco (California)
• Subject Areas: Design; Highways; Maintenance and Preservation; Safety and Human Factors;

Filing Info

• Accession Number: 00218144
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 2 1994 12:00AM