According to din 1045 (1972) a concrete is impervious to water when the depth of penetration of water under pressure is limited, with the provision that the test samples are completely compacted and drying-out of the concrete prior to testing is prevented. The impermeability to water is influenced by (1) the density of the cement stone, (2) the water:cement ratio, (3) the age of the concrete, (4) the time it was vibrated, and (5) the after-treatment. Under (1) the permeability of the cement stone is represented graphically and discussed. With an increase in water:cement ratio it increases and decreases with increasing age and advanced hydration of the cement. Under (2) the tests which the Duesseldorf Institute conducted on 11 cements are discussed. These show the relationship between water penetration depth and water:cement ratio. Under (3) the cement age has an obvious effect on the water penetration depth. In (5) several tables show the influences on the average and greatest water penetration depths of the different deposition methods adopted. These are discussed. The author finally discusses the penetration depth on test samples from structural elements or from cores. /TRRL/

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  • Corporate Authors:


    Carl-Bertelsmann Strasse 270, Postfach 5555
    D-4830 Guetersloh,   Germany 
  • Authors:
    • Kremser, H
  • Publication Date: 1975-4


  • German

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 217-21
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00183632
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1978 12:00AM