THE BALVAC MFP SYSTEM - DURABILITY IMPROVEMENT FOR CONCRETE

This article explains the use of sodium monofluorophosphate (MFP) as an inhibitor of concrete corrosion. The MFP System provides a method of inhibiting the corrosion activity of steel in existing hardened reinforced concrete, without having to gain wholesale access to the steel to apply it. Its exact inhibition method is complex, and has been found to benefit reinforced concrete in several ways. MFP seems to act mainly as an anodic inhibitor in the concrete environment. It increases the concrete's resistance to freeze/thaw action, and inhibits corrosion when it is present at the electromechanical interface of the steel reinforcement surface. MFP is applied in solution to the hardened concrete surface, and relies on natural permeation to the steel reinforcement to enable its corrosion inhibition. The stages of MFP treatment are: (1) evaluation of the concrete structure to be treated; (2) testing the concrete's permeability to the MFP solution; (3) after cleaning the concrete and repairing defects such as cracking and spalls, apply the aqueous MFP solution in several passes to saturate the concrete pores; (4) monitor the progress of MFP migrattion at intervals; and (5) apply protective or decorative coatings to the concrete if required. The MFP system has been applied to several concrete structures in Switzerland.

  • Availability:
  • Corporate Authors:

    PALLADIAN PUBLICATIONS LTD

    THE OLD FORGE
    ELSTEAD, SURREY  United Kingdom  GU8 6DD
  • Authors:
    • HAYNES, M
  • Publication Date: 1995

Language

  • English

Media Info

  • Pagination: p. 17-9
  • Serial:
    • CONSTRUCTION REPAIR
    • Volume: 9
    • Issue Number: 4
    • Publisher: PALLADIAN PUBLICATIONS LTD
    • ISSN: 0967-0726

Subject/Index Terms

Filing Info

  • Accession Number: 00723184
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jul 26 1996 12:00AM