CORROSION INHIBITOR FORMULATED WITH CALCIUM NITRITE FOR USE IN REINFORCED CONCRETE

The scarcity of good aggregate in Japan led to an investigation of the use of a corrosion inhibitor for reinforced concrete. The results showed that the introduction of calcium nitrite diminishes the corrosion of reinforcing steel in the presence of admixed sodium chloride. Long-term tests on large specimens partially immersed in saturated sodium chloride solution indicate that admixed calcium nitrite can prevent the open circuit potential of reinforcing steel from entering the active region. Calcium nitrite was found to enhance the strength of concrete. The use of a calcium-based admixture is expected to sidestep the issue of alkali-aggregate reactions and subsequent deterioration of concrete.

• Supplemental Notes:
  • Presented at the 79th ASTM Annual Meeting, Chicago, Illinois, June 27-July 2, 1976.
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Rosenberg, A M
  • Gaidis, J M
  • Kossivas, T G
  • Previte, R W
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: p. 89-99
• Serial:
  • ASTM Special Technical Publications
  • Issue Number: 629
  • Publisher: American Society for Testing and Materials (ASTM)

Subject/Index Terms

• TRT Terms: Admixtures; Calcium; Concrete; Corrosion protection; Material reinforcement; Nitrites; Reinforced concrete; Reinforcing steel; Sodium chloride; Steel
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00172484
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: May 3 1978 12:00AM