MICROSCOPIC STUDY OF ICE PROPAGATION IN CONCRETE

This paper introduces a new procedure to examine ice formation and propagation in concrete. The technique, using the concept of "directional solidification," allows the controlled cooling and warming of relatively large specimens and also permits continuous monitoring of the solid/liquid interface. An experimental program was initiated to study ice formation in the following materials: ionic solutions, normal and lightweight aggregate, cement paste, and concrete. The study reveals that, generally, ice does not completely fill up the pores in cement paste and supercooled water always exists due to the alkalinity of cement paste. The velocity of ice propagation differs in various components of concrete, and ice propagation in aggregate particles is faster than that in the matrix. Sequential images of ice formation in air-entrained voids give insight into the freezing mechanism of concrete.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Wang, K W
  • Monteiro, PJM
  • Rubinsky, B
  • Arav, A
• Publication Date: 1996-7

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 370-377
• Serial:
  • ACI Materials Journal
  • Volume: 93
  • Issue Number: 4
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Aggregates; Cement paste; Concrete; Durability; Experiments; Ice formations; Interfaces; Liquids; Solidification; Solids
• Old TRIS Terms: Propagation; Solid liquid interface
• Subject Areas: Geotechnology; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00726918
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 7 1996 12:00AM