POLARIZATION MEASUREMENTS AS RELATED TO CORROSION OF UNDERGROUND STEEL PILING

POLARIZATION MEASUREMENTS OF STEEL PIPE SPECIMENS EXPOSED TO THE SOIL AT FOUR DAM SITES WERE MADE BY THE CORPS OF ENGINEERS (LOWER MISSISSIPPI VALLEY DIVISION) AND RELATED TO THE CORROSION OF STEEL PILING (UNDERGROUND) AT THE SITES. AS THE POLARIZATION MEASUREMENTS WERE MADE PERIODICALLY ON WEIGHED SPECIMENS FOR PERIODS AS LONG AS SEVEN YEARS, THE DATA OFFERED AN EXCELLENT OPPORTUNITY FOR EVALUATING THE ACCURACY AND PRACTICABILITY OF A POLARIZATION TECHNIQUE FOR MEASURING CORROSION RATES. REASONABLE AGREEMENT BETWEEN CALCULATED AND ACTUAL CORROSION ON THE SPECIMENS MADE IT POSSIBLE TO ESTIMATE MAXIMUM ANTICIPATED CORROSION ON THE PILING AFTER 50 YEARS OF EXPOSURE. INSTANTANEOUS CORROSION RATES WERE ALSO MEASURED ON TWO DRIVEN PIPE PILES, 72 FT (22 M) AND 19 FT (5.8 M) IN LENGTH, BOTH OF WHICH HAD BEEN EXPOSED FOR 12 YEARS. ONE MONTH LATER, THE SHORT PILE WAS EXTRACTED AND EXAMINED. RELATIVELY LOW CORROSION RATES, CALCULATED FROM THE POLARIZATION DATA, WERE VERIFIED BY THE APPEARANCE OF THE PILE AND BY THE LIMITED EXTENT OF THE PITTING. /AUTHOR/

  • Supplemental Notes:
    • Vol 75c, No 2, PP 107-121
  • Authors:
    • Schwerdtfeger, W J
  • Publication Date: 1971-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00209591
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 27 1972 12:00AM