PERFORMANCE OF MAYARI R WEATHERING STEEL (ASTM A242) IN BRIDGES AT THE EIGHT MILE ROAD AND JOHN LODGE EXPRESSWAY IN DETROIT, MICHIGAN

MAYARI R WEATHERING STEEL WAS USED IN THE CONSTRUCTION OF THE EIGHT MILE ROAD BRIDGE AND ADJACENT SERVICE BRIDGES OVER THE JOHN LODGE EXPRESSWAY IN DETROIT. CORROSION PERFORMANCE OF THE STEEL WAS BASED ON RESULTS OF A COOPERATIVE PROGRAM BY THE MICHIGAN DEPARTMENT OF STATE HIGHWAYS AND BETHLEHEM STEEL CORPORATION. THE PROGRAM, WHICH COVERED THE PERIOD OF 5-1/2 YEARS SINCE THE BRIDGES WERE OPENED TI SERVICE, INCLUDED PERIODIC INSPECTIONS OF THE WEATHERING STEEL, X-RAY DIFFRACTION AND CHEMICAL ANALYSES OF SOIL AND RUST, AND COMPARATIVE STUDIES OF WEATHERING RATES OF CORROSION SPECIMENS. THE MAJOR PROPORTION OF THE WEATHERING STEEL IN THE BRIDGES HAS AN EXCELLENT APPEARANCE AND HAS DEVELOPED THE TIGHT PROTECTIVE-OXIDE SURFACE WHICH IS CHARACTERISTIC FOR MAYARI R STEEL. A MINOR PROPORTION SHOWS AN ACCUMULATION OF ROAD DIRT AND SOME FLAKING OF DIRT AND RUST WHICH IS RESTRICTED TO AND PRESUMED PARTIALLY DUE TO THE CONFINED CONFIGURATION CREATED BY A COMBINATION OF LOW OVERHANG AND HIGH RETAINING WALL IN THE TWO UNDERPASSES. WITH THIS TYPE OF CONFIGURATION, ROAD SPRAY IS EASILY CARRIED UP TO THE BEAMS IN CONSIDERABLE VOLUME SO THAT ROAD DIRT, DEICERS, CEMENT DUST AND GYPSUM ACCUMULATE IN LAYERS THAT TEND TO REMAIN WET, THE RESULTING POULTICE-LIKE ACTION BEING CONDUCIVE TO HIGHER CORROSION RATES. /AUTHOR/

  • Supplemental Notes:
    • 33 Pp, 3 FiG, 4 TAB, 8 PHOT
  • Corporate Authors:

    Bethlehem Steel Corporation

    ,    
  • Authors:
    • Zoccola, J C
    • Permoda, A J
    • Oehler, L T
    • Horton, J B
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00209494
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 8 1971 12:00AM