COMPARING THE CHLORIDE RESISTANCES OF REINFORCING BARS

Chlorine-induced corrosion of reinforcing bars has been a primary cause of premature deterioration of many concrete bridges. This study discusses results from a comparison study of 5 new bars that could replace the current epoxy-coated carbon steel bars. The five bars studied included a positive machined stainless steel bar, a stainless steel-clad carbon steel bar, a microcomposite steel bar, a lean duplex stainless steel bar and a carbon steel bar coated with a 2 mil layer of arc-sprayed zinc and an epoxy coating. The resistance to corrosion of these five bars in heavily salted concrete blocks was compared with that of conventional carbon steel bars and austenitic stainless steel bars. Results indicate that the positive machined stainless steel bars showed the same resistance to high concentration of chloride in concrete as the austenitic stainless steel bars. Defect-free stainless steel-clad carbon steel bars also showed excellent corrosion resistance. The other bars also appeared to have better corrosion resistance than the carbon steel bars.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/4163061
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Clemena, G G
  • Virmani, Y P
• Publication Date: 2004-11

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 39-49
• Serial:
  • Concrete International
  • Volume: 26
  • Issue Number: 11
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0162-4075

Subject/Index Terms

• TRT Terms: Alternatives analysis; Anticorrosion coatings; Austenite; Carbon steel; Chlorides; Corrosion resistance; Corrosion resistant steel; Reinforced concrete bridges; Reinforcing bars; Reinforcing steel; Stainless steel
• Subject Areas: Geotechnology; Highways; Materials; I34: Steels and Metals;

Filing Info

• Accession Number: 00982014
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 14 2004 12:00AM