CORROSION OF GALVANIZED STRIPS IN FLORIDA REINFORCED EARTH WALLS

Mechanically stabilized earth walls (MSEW) with steel reinforcement are economical construction options for bridge approaches and other highway components. The concept has been implemented on over 300 highway projects in Florida. The corrosion condition of the galvanized reinforcement in Florida Department of Transportation (FDOT) MSEW was determined at selected sites. For this purpose, 10 MSEW structures were instrumented at eight different Florida sites for measurements of soil resistivity, electrical potential, and corrosion rates of both galvanized steel and plain steel by polarization resistance tests. The FDOT design standards for soil chemistry and particle size distribution were met in virtually all the test locations and structures tested. The reinforcements in the structures investigated were typically in good condition and the apparent corrosion rate of galvanized elements was low (average about 1 micro-m/year). A deterioration model for service life forecasting was formulated using the field survey input.

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  • English

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Filing Info

  • Accession Number: 00795815
  • Record Type: Publication
  • Contract Numbers: DTFH61-96-X-00040-FHWAS2, PG16R56955
  • Files: TRIS
  • Created Date: Aug 1 2000 12:00AM