THE PENETRATION OF CHLORIDE SALTS INTO CONCRETE PAVEMENTS

EINDRINGTIEFE VON CHLORIDHAELTIGEN TAUSALZEN IN BETONDECKEN

The following problems are encountered in connection with the use of salt for thawing: (1) physical effect on concrete strength, the failure mechanism and technological counter measures being well known. (2) protection of the reinforcement against corrosion by chlorides. The accumulation of chlorides in the concrete under certain circumstances leads to increased electrolytic activity and a possible speeding up of the corrosion process. Because the chloride concentration over the cross section of the concrete decreases with depth in relation to the concrete quality, one should endeavour to examine the ability of the concrete to resist the penetration of chlorides and also to adjust the location of the reinforcement and the concrete cover accordingly. A series of laboratory tests served to determine the chloride distribution of concrete with and without entrained air following 30, 60 and 90 cycles of alternate freezing and salting as per standard, the results were compared with older bridge decks subject to natural influences in-situ. The foregoing statements apply to concretes without cracks in the surfaces subject to salt application. Tests are still in progress on the penetration of chlorides into cracks or construction joints. /TRRL/

  • Corporate Authors:

    Innsbruck University, Austria

    Technikerstrasse 13
    Innsbruck,   Austria 
  • Authors:
    • Aste, C
  • Publication Date: 0

Language

  • German

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 46-49
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00301008
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: Nov 7 1979 12:00AM