BASIC MEASURES TAKEN TO ENSURE THE FROST RESISTANCE OF HYDRAULIC CONCRETE

The standard procedures employed for the production of freeze-thaw-resistant concretes consist in the use of materials that satisfy special requirements for the concretes as well as the adherence to certain rules governing the selection of their compositions. Under frost- resistance requirements set forth for Mrz 200 and above, the use of purely clinker portland cement of standard minerological composition is rational for concretes used in zones of variable water level, where they are subject to systematic freezing-thawing in the saturated state. In this case the tricalcium aluminate content in the clinker is usually limited to 6-7 percent. Studies indicate that the production of concretes with a frost resistance commensurate with that of Mrz 200 concrete is possible with the introduction of effective surface-active additives (air-entraining agents) and with restrictions on the water-cement ratio. The use of highly active grade 400 and 500 cements, in conjunction with additives of surface-active substances makes it possible to produce Mrz 200 grade frost-resistant concretes with a cement ratio of only 160-180 kg/cube m. It has been demonstrated that the presence of more than 5% of magnesium oxide in the clinker causes a marked reduction in frost resistance. Comments are also made on the preparation of aggregates, the use of plasticizing additives, and the need to study specific problems in the specific regions where the construction is planned.

  • Supplemental Notes:
    • Translated from Gidrotekhnicheskoe Stroitelstvo, No. 8, August 1975, pp 13-15.
  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  USA  10017-2398
  • Authors:
    • Ginzburg, T G
    • Sudakov, V B
    • Litvinova, R E
  • Publication Date: 1975-8

Media Info

  • Features: Tables;
  • Pagination: p. 727-730
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00145055
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 13 1977 12:00AM