SEVEN YEARS ON: A REVIEW OF THE MECHANISMS AND ADVANTAGES OF ELECTROCHEMICAL REPAIR

The article reviews the mechanisms and advantages of the electrochemical repair of concrete. Since 1988, desalination (chloride extraction) and re-alkalisation have been widely used in about 20 countries worldwide. These methods are becoming more popular, due to their unique, largely non-destructive, repair capability and environmental acceptability. The Norcure desalination and re-alkalisation methods for the electrochemical repair of reinforced concrete are described. They are technically sound, well-proven methods, with seven years of successful application. They attack the causes of corrosion in depth, by treating the affected concrete and steel. This results in considerable advantages over conventional repair schemes and cathodic protection, including: (1) addressing the causes as well as symptoms of corrosion; (2) passivating steel reinforcement throughout; (3) vastly reducing concrete breakout, to achieve further benefits; (4) ability to maintain architectural and exposed aggregate finishes; (5) no need for permanent electronic monitoring; and (6) fixed costs (usually). However, there are limits to the methods' cost-effectiveness, as the affected structure should be treated as early as possible during damage development.

  • Availability:
  • Corporate Authors:

    PALLADIAN PUBLICATIONS LTD

    THE OLD FORGE
    ELSTEAD, SURREY  United Kingdom  GU8 6DD
  • Authors:
    • Miller, J B
  • Publication Date: 1995

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 3-5
  • Serial:
    • CONSTRUCTION REPAIR
    • Volume: 9
    • Issue Number: 6
    • Publisher: PALLADIAN PUBLICATIONS LTD
    • ISSN: 0967-0726

Subject/Index Terms

Filing Info

  • Accession Number: 00723186
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jul 26 1996 12:00AM