CONCRETE STRUCTURE AND PROTECTION OF STEEL REINFORCEMENT. DURABILITY OF CONCRETE. G.M. IDORN INTERNATIONAL SYMPOSIUM, 1990 ANNUAL ACI CONVENTION, TORONTO, ONTARIO, CANADA

The greatest threat to the durability of reinforced concrete structures is the reinforcement corrosion. The paper presents the importance of the concrete protective cover and the conditions causing the reinforcement corrosion under the action of chlorides and carbonic acid. Processes of absorption, diffusion and flow, i.e. of transport of media through concrete depend on the pore system and the amount of water in the pores. Physical laws describing the penetration of aggressive agents into concrete can serve as a basis for engineering calculations of reinforcement durability in the concrete as well as for the designing of the concrete cover. Physical laws and corresponding material parameters are briefly reviewed in the paper. For engineering purposes, in calculating the durability, four typical tasks can be solved. The processes of degradation depend on the pore system in the concrete structure, and the paper indicates some possible technological measures of structure modifications.

• Supplemental Notes:
  • The G.M. Idorn International Symposium on Durability of Concrete, sponsored by Committee 201 on Durability, was held at the 1990 Annual ACI Convention in Toronto, Ontario, Canada.
• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • UKRAINCIK, V
  • Bjegovic, D
• Conference:
  • The G.M. Idorn International Symposium on Durability of Concrete, sponsored by Committee 201 on Durability, was held at the 1990 Annual ACI Convention in Toronto, Ontario, Canada.
• Publication Date: 1992

Media Info

• Features: Figures; References;
• Pagination: p. 21-32

Subject/Index Terms

• TRT Terms: Adsorption; Concrete structures; Corrosion; Diffusion (Optics); Durability; Physical properties; Porosity; Reinforced concrete; Reinforcing steel; Structural design
• Old TRIS Terms: Cover
• Subject Areas: Bridges and other structures; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00622482
• Record Type: Publication
• Report/Paper Numbers: SP-131
• Files: TRIS
• Created Date: Jun 30 1992 12:00AM