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Freeze-deicing salt resistance of concretes containing cement rich in slag

Stark, J. / Ludwig, H.M.

Whereas blast-furnace cement concretes have proved successful in structures subjected to freeze-thaw attack, their use in structures subjected to freeze-deicing salt attack is still a problem. The present paper discusses this problem. It was found that the freeze-deicing salt resistance of blast-furnace cement concretes is closely related to the carbonation of the surface area. The carbonation of blast-furnace cement concretes does not only lead to an increase in capillary porosity but also to metastable calcium carbonates soluble in NaCl. Based on the results of investigations, ways of improving the freeze-deicing salt resistance of blast-furnace cement concretes are proposed.

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Freeze-deicing salt resistance of concretes containing cement rich in slag

Stark, J. / Ludwig, H.M.

Whereas blast-furnace cement concretes have proved successful in structures subjected to freeze-thaw attack, their use in structures subjected to freeze-deicing salt attack is still a problem. The present paper discusses this problem. It was found that the freeze-deicing salt resistance of blast-furnace cement concretes is closely related to the carbonation of the surface area. The carbonation of blast-furnace cement concretes does not only lead to an increase in capillary porosity but also to metastable calcium carbonates soluble in NaCl. Based on the results of investigations, ways of improving the freeze-deicing salt resistance of blast-furnace cement concretes are proposed.

Freeze-deicing salt resistance of concretes containing cement rich in slag

Stark, J. / Ludwig, H.M.

Whereas blast-furnace cement concretes have proved successful in structures subjected to freeze-thaw attack, their use in structures subjected to freeze-deicing salt attack is still a problem. The present paper discusses this problem. It was found that the freeze-deicing salt resistance of blast-furnace cement concretes is closely related to the carbonation of the surface area. The carbonation of blast-furnace cement concretes does not only lead to an increase in capillary porosity but also to metastable calcium carbonates soluble in NaCl. Based on the results of investigations, ways of improving the freeze-deicing salt resistance of blast-furnace cement concretes are proposed.

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Title:

Freeze-deicing salt resistance of concretes containing cement rich in slag

Contributors:

Stark, J. (author) / Ludwig, H.M. (author)

Published in:

Frost Resistance of Concrete, International RILEM Workshop on Resistance of Concrete to Freezing and Thawing with or without de-icing chemicals, 1997 ; 123-138

RILEM Proceedings ; 34

Publication date:

1997

Size:

16 Seiten, 9 Bilder, 4 Tabellen, 21 Quellen

ISBN:

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Frostbeständigkeit , Effloreszenz , Beton , lösliches Salz , chemischer Angriff , Temperaturwechselbeständigkeit , Gehalt (Zusammensetzung) , Schlacke , Hochofenzement , Calcit , Porosität

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