Preliminary results are presented of a 10-year field study undertaken in Louisiana to determine the ability of aluminum and galvanized-steel culverts to resist corrosion in moderate, acidic, and low-electrical-resistivity environments. In 1973, 10 types of aluminum and galvanized- steel culverts were installed, generally as side drains, at 10 test locations. One pair of each type of culvert was installed at each site. Every two years, investigators are removing one designated culvert of each of the pairs and subjectively rating the condition of the metal and protective coating. Field samples of the culverts are evaluated in the laboratory, and the test culverts are installed again after each inspection. The undisturbed mate of each pair remains buried for the duration of the study to analyze the impact of the periodic inspections. After 6 years of field exposure, the asbestos-bonded, galvanized- steel culvert is resisting corrosion quite well even in brackish water, an environment characterized by low electrical resistivity. Several aluminum and coated galvanized-steel culverts appear to be well suited for the normal range of acidic environments encountered in Louisiana. All of the test culverts appear to provide satisfactory service life in the test environment designated as moderate. (Authors)

Media Info

  • Media Type: Print
  • Features: Figures; Maps; Photos; References; Tables;
  • Pagination: pp 25-32
  • Monograph Title: Corrosion, Cathodic Protection, Aggregate Upgrading, Concrete Density, and Pavement Markings
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00331043
  • Record Type: Publication
  • ISBN: 0309031044
  • Files: TRIS, TRB
  • Created Date: Jun 12 1981 12:00AM