EFFECT OF WELDING ON FATIGUE LIFE OF HIGH-STRENGTH REINFORCING STEEL USED IN CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS

EXISTING LITERATURE AND LABORATORY EXPERIMENTATION WERE USED IN AN ATTEMPT TO DETERMINE THE EFFECTS OF WELDING ON ASTM A615, GRADE 60 STEEL THAT IS USED TO FABRICATE WELDED BAR MATS FOR REINFORCEMENT IN CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS (CRCP). IT WAS CONCLUDED THAT THE FORMULATION OF A GENERALIZED STRESS SPECTRUM FOR STEEL IN CRCP IS UNREALISTIC. STEEL TESTED ACROSS AND BETWEEN WELDS SHOWED THAT THE STATIC PROPERTIES OF THE MATERIAL WERE UNAFFECTED BY THE WELDS BUT THAT FATIGUE LIFE WAS ALMOST HALVED. ON THE BASIS OF FIELD EXPERIENCE WITH THIS PRODUCT IN MICHIGAN IT WAS CONCLUDED THAT WELDED BAR MATS ARE SATISFACTORY FOR USE IN CRCP. IT WAS OBSERVED THAT THE STATIC STRENGTH AND DUCTILE PROPERTIES OF THE STEEL NEED NOT BE GREATLY REDUCED BY WELDING IF THE APPLICABLE PROVISIONS OF APPROPRIATE WELDING SPECIFICATIONS ARE ADHERED TO. IT WAS ALSO CONCLUDED THAT SOME DEFINITIVE RESEARCH IS NEEDED TO IMPROVE THE DESIGN PROCEDURES FOR CRCP.

  • Corporate Authors:

    Federal Highway Administration

    Structure and Applied Mechanics Division, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Pasko, T J
  • Publication Date: 1971-11

Media Info

  • Pagination: 30 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00205416
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-72- 32 Final Rpt., FCP 25J2-052
  • Files: TRIS, USDOT
  • Created Date: May 24 1976 12:00AM