EXPERIMENTAL IDENTIFICATION OF ICE FORMATION IN SMALL CONCRETE PORES

This paper describes how the freezing of water or salt solution in the concrete pores may be the cause for severe damage and for significant reduction of service life. Although being one of the main research subjects during the past decades, a complete understanding of the deterioration mechanisms is still missing. This is probably because of a lack of understanding in the freezing of a liquid solution in the very small (some 10 nm) pores. In a series of experiments, the freezing process, its initiation, continuation and the resulting damage, was studied. Calorimetric, expansion and acoustic (ultrasonic pulse transit time, acoustic emission) methods were applied to monitor heat release, mechanical deformation and damage during a series of frost cycles. The results give an insight into supercooling, salt segregation, ice front penetration and thawing characteristics. Based on these data, a qualitative sequential damage model is proposed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Corporate Authors:

  Elsevier

  The Boulevard, Langford Lane
  Kidlington, Oxford  United Kingdom  OX5 1GB
• Authors:
  • Kaufmann, J P
• Publication Date: 2004-8

Language

• English

Media Info

• Features: Figures; References;
• Pagination: 7 p.
• Serial:
  • Cement and Concrete Research
  • Volume: 34
  • Issue Number: 8
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Acoustic emission; Calorimeters; Concrete; Expansion; Freeze thaw durability; Freezing; Ice; Liquids; Pores; Supercooling; Ultrasonics
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00983081
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 9 2004 12:00AM