PRECOOLING CONCRETE USING FROZEN SAND

A most effective way to minimize thermal cracking is to control the temperature of the concrete at placement, and a widely used method to keep the concrete placing temperature low is to precool the concrete components. The development of such a precooling system is described. The project consisted of three stages. Laboratory tests investigated the production of frozen sand (sand chilled below the freezing point of water) by injecting liquid nitrogen, the properties of frozen sand, the properties of concrete cooled by using frozen sand, and the cooling efficiency of liquid nitrogen. Full scale tests were made to examine these issues at ready-mix plants installed with the sand-cooling apparatus. The precooling method was then applied to constructing mass concrete structures.

  • Availability:
  • Authors:
    • Kurita, M
    • Goto, S
    • Minegishi, K
    • Negami, Y
    • Kuwahara, T
  • Publication Date: 1990-6

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 60-65
  • Serial:
    • Concrete International
    • Volume: 12
    • Issue Number: 6
    • Publisher: American Concrete Institute (ACI)
    • ISSN: 0162-4075

Subject/Index Terms

Filing Info

  • Accession Number: 00494834
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 30 1990 12:00AM