Concrete provides to steel a long-term protection due to the alkalinity of the cement and to the physical isolation that the cover represents. However, when the carbonation front or the chloride ions reach the rebar, the steel develops an active corrosion which is detrimental towards the structural behavior. The consequences of the reinforcement corrosion are: (a) A decrease of the steel cross-action, (b) the possible loss of steel ductility, (c) the cracking of the cover, and (d) the loss of the steel/concrete bond. The safety and serviceability of the structure are then affected. As a result, non-destructive techniques to measure the corrosion rate are needed in order to detect: (a) the steel depassivation (b) to predict the residual life of the structure when actively corroding and thus to decide the repair system and (c) to monitor the efficiency of the repair system.


  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 352-366

Subject/Index Terms

Filing Info

  • Accession Number: 00725731
  • Record Type: Publication
  • ISBN: 8487867790
  • Files: TRIS
  • Created Date: Sep 10 1996 12:00AM