PAINTING CONCRETE - EFFECT OF MOISTURE

One of the requirements made of a painted concrete wall is that the film of paint should allow moisture deriving from inside to escape so as to prevent the formation of condensation of walls. At the same time the paint film is required to protect the structure from the impact of driving rain. In the case of concrete floors which have been painted or which have been given some other kind of surface finish good adhesion is required even in the presence of dampness. The significance of moisture to the properties of painted aerated concrete has been studied at the Scandinavian Paint and Printing Research Institute. The project involved primarily studies of the transport of moisture in newly cast concrete which was painted only a short time after pouring. Transport of moisture in specimens of painted and lightweight concrete has been subjected to comparative study longside unpainted specimens under conditions similar to those to which these materials are exposed in an actual building. This report on the studies outlines the general principles and laws to be taken into account when calculating the transport of moisture through a film of paint applied to porous cement and/or materials in which lime is used as a bonding agent. The report also presents results referring to escape of moisture, permeability, water absorption, salt deposits and the adhesion of paints to damp concrete. /AUTHOR/

  • Supplemental Notes:
    • Taken from National Swedish Building Research Summaries
  • Corporate Authors:

    National Swedish Institute for Building Research

    Box 27 163, 102 52
    Stockholm,   Sweden 
  • Authors:
    • Lindberg, B
  • Publication Date: 1974

Media Info

  • Pagination: 2 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00261618
  • Record Type: Publication
  • Report/Paper Numbers: S7:1974 Summary
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM