Niszczenie i konserwacja średniowiecznych wątków ceglano-wapiennych w Krakowie

• Authors: Weber Johannes , Kozłowski Roman

Title variants

EN

The Deterioration and Conservation of Mediaeval Brick Masonry in Cracow

• Languages of publication: PL EN

Abstracts

EN

A prevailing mechanism of the chemical weathering of bricks exposed to the polluted atmosphere of central Cracow is an uptake of sulphur dioxide by a solution of calcium carbonate abundant in the mortar. The subsequent cycles of dissolution, transport and precipitation lead to filling cracks and cavities in the bricks with gypsum as well as to the formation of relatively thin gypsum crusts on the surface. The latter, always incorporating soot and dust particles, constitute a characteristic black patina of the brick buildings. The effectiveness of water repellent treatment in protecting the lime surfaces against acid deposition has been demonstrated by using artificial weathering in a humid atmosphere containing SO2 .

• Publisher: Narodowy Instytut Dziedzictwa
• Journal: Ochrona Zabytków
• Year: 1995
• Issue: 1
• Pages: 77-80

Dates

published

1995

Contributors

author

Weber Johannes

author

Kozłowski Roman

References

• P. Somasundaran, G. E. Agar, The Zero Point Charge of Calcite, Journal of Colloid and Interface Chemistry”, 24, 1967, s. 433-441.

Identifiers

ISSN

0029-8247