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On the service life of concrete exposed to frost action

På svenska

Author

Editor

  • Michel Pigeon
  • Max J. Setzer
  • Jacques Marchand

Summary, in English

A theory is presented for the service life of concrete exposed to frost action. It is based on a separation of the frost resistance problem in two parts. Part 1, that is only a function of the material itself, and which is expressed in terms of a critical water content, or a degree of saturation, which is a "fracture value" being almost independent of the external conditions (except for the lowest temperature and the internal salt concentration). The critical degree of saturation is a consequence of the existence of a critical distance of water transfer during freezing. Some experimental data for the critical distance are given. Part 2, that is a function of the wetness of the environment, and which is expressed in terms of a time function of the capillary water uptake, and the long term water absorption in the air-pore system. Probably, it is also a function of the salt concentration outside and inside the concrete. It is shown in the paper, that the long term water absorption in pure water can often be described and extrapolated by simple time functions.

Publishing year

1997

Language

English

Pages

23-41

Publication/Series

Freeze-Thaw Durability of Concrete (RILEM Proceedings 30)

Document type

Conference paper

Publisher

E & FN Spon

Topic

  • Materials Engineering

Conference name

International Workshop in the Resistance of Concrete to Scaling due to Freezing in the Presence of De-icing Salts,

Conference date

0001-01-02

Conference place

Sainte-Foy, Québec, Canada

Status

Published

ISBN/ISSN/Other

  • ISBN: 0-419-20000-2