ACCELERATED HARDENING OF PORTLAND CEMENT CONCRETE

DURCISSEMENT ACCELERE DU BETON A CIMENT PORTLAND

This article reviews the three main methods of accelerating the hardening of portland cement concrete, which are used separately or are combined in the manufacture of precast concrete elements: (1) thermal treatment, (2) use of special cements, and (3) use of additives. The three techniques are discussed together with the rate of acceleration obtained with each and the effect of accelerated hardening on the final qualities of concrete. Regulations are presented concerning the strength, temperature, time and mix design, although basic physical and chemical phenomena are not completely known. Accelerated hardening is justified for a wide range of concrete products. Final strength decreases when the concrete is treated at a high temperature, but this reduction is small if precautions are taken and is of no importance when considered in the light of the economic advantages of obtaining a high strength very rapidly. Mix design can be easily adjusted to compensate these losses in strength. /TRRL/

  • Corporate Authors:

    Meteore

    48 Rue de la Bienfaisance
    Paris,   France 
  • Authors:
    • Hill, A W
  • Publication Date: 1973

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00125185
  • Record Type: Publication
  • Source Agency: Laboratoire Central des Ponts et Chausees (LCPC)
  • Files: ITRD, TRIS
  • Created Date: Nov 18 1975 12:00AM