Architectural Ceramics: Difference between revisions
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== Abstract == | == Abstract == | ||
Typical damage patterns are presented and explained. | |||
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== Decay | == Decay Pattern of Architectural Ceramics== | ||
'''Ziegelschäden''' | '''Ziegelschäden''' | ||
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Damage to bricks can look like this: | Damage to bricks can look like this: | ||
'''Glazed Architectural Ceramics''' | '''Glazed Architectural Ceramics''' | ||
The glaze of a glazed building ceramics prevents both the transport of moisture and salts. Often however glaze is crackled, which allows a capillary moisture transport. The Craquelée particularly clear shows an existing salt load, which consequently often leads to the spalling of the glazes. | |||
Some examples of salt-contaminated glazed building ceramics are shown here. | |||
=== Scaling(?)=== | === Scaling(?)=== | ||
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<gallery perrow="3" heights="200px" widths="250px" caption="Efflorescences on Architectural Ceramics"> | <gallery perrow="3" heights="200px" widths="250px" caption="Efflorescences on Architectural Ceramics"> | ||
Image: Salzwedel 17012007 (145).jpg| | Image: Salzwedel 17012007 (145).jpg|Figure 6: Salt on a floor plate | ||
Image: Pilsum salz auf Ziegelsaeule.jpg| | Image: Pilsum salz auf Ziegelsaeule.jpg|Figure 7: Carbonate salts form a crust on a pillar. Cause in this case were a injection with cement slurry | ||
Image:Lueneburg-AmSande1 3.jpg| | Image:Lueneburg-AmSande1 3.jpg|Figure 8: Crystallizing salts make the crackles on a glazed tile visible. With time, the salts will damage the glaze. | ||
</gallery> | </gallery> | ||
Revision as of 15:09, 1 June 2011
<bibimport/>
Author: Hans-Jürgen Schwarz
Back to Decay Pattern
Abstract
Typical damage patterns are presented and explained.
Decay Pattern of Architectural Ceramics
Ziegelschäden
Salt-induced damage to bricks are common.
Damage to bricks can look like this:
Glazed Architectural Ceramics
The glaze of a glazed building ceramics prevents both the transport of moisture and salts. Often however glaze is crackled, which allows a capillary moisture transport. The Craquelée particularly clear shows an existing salt load, which consequently often leads to the spalling of the glazes.
Some examples of salt-contaminated glazed building ceramics are shown here.
Scaling(?)
Figure 3: Photomicrograph as Fig 2 but with crossed polarisers. It is clearly seen that the plaster is both responsible for the damage and on the other hand, he acts in this case as a kind of glue that holds together the broken brick pieces. With the removal of the original plaster the brick material would be lost.