INFLUENCE OF CHLORIDE IN REINFORCED CONCRETE

The state of knowledge regarding the action of chloride, principally calcium chloride, in reinforced concrete is reviewed, with special emphasis on its effect on the reinforcing steel. Calcium chloride's beneficial effects in ordinary reinforced concrete are enumerated, along with the precautions regarding its use in prestressed concrete and special situations. It is pointed out that the limit for chloride that has been suggested as a guide to determine the extent of repair to existing bridge decks that have been subject to repeated application of deicer salts is not a requirement that should be applied to limit the chloride content of ordinary reinforced concrete. When the amount of commercial calcium chloride is limited to 2% by weight of cement, the degree of corrosion in ordinary reinforced concrete is insignificant if the concrete is reasonable dense and there is adequate cover over the steel.

• Supplemental Notes:
  • Presented at the Chloride Corrosion of Steel in Concrete Symposium, 79th ASTM Annual Meeting, Chicago, Illinois, June 27-July 2, 1978.
• 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:
  • Cook, H K
  • McCoy, W J
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: p. 20-29
• Serial:
  • ASTM Special Technical Publications
  • Issue Number: 629
  • Publisher: American Society for Testing and Materials (ASTM)

Subject/Index Terms

• TRT Terms: Admixtures; Bridge decks; Calcium chloride; Cement; Chlorides; Concrete; Concrete bridges; Corrosion; Corrosion protection; Deicing; Maintenance practices; Reinforced concrete; Reinforcement (Engineering); Reinforcing steel; Steel; Testing
• Old TRIS Terms: Additions; Chloride corrosion; Decks
• Subject Areas: Geotechnology; Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 00172508
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: May 31 1978 12:00AM