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Brandenburg Gate, Berlin

Brandenburg Gate, Berlin

Berlin Germany Facade repair Natural stone conservation Stone replacement Restoration mortar Brandenburg Gate Antihygro FM ECC Grout ECC

The Brandenburg Gate in Berlin was built between 1788 and 1791. It is the city's most important landmark and at the same time a national symbol, with which many important events in the history of Berlin, Germany, Europe and the world of the 20th century are connected. The early classicist style building marked the border between East and West Berlin and was the symbol of the Cold War. The Brandenburg Gate has been a symbol of the reunification of Germany and Europe since 1990.
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Reference identification data
Construction project:
Facade restoration / plinth Facade restoration Facade restoration / natural stone
Building type:
Historically protected / historically valuable buildings
Short description
The structure showed cracks in some places, for which there were different causes. Improved statics and higher load capacity were achieved by stiffening the structures, frictional connection of the disturbed foundation and decoupling the components gate, passage hall and gate houses components. Particularly on the western side, intense blackening of the rock surface had built up, which was strongly interlocked with the ground. The deposits were composed of a mixture of soot and plaster. The cleaning process carried out in 1990 with the help of water could only result in a superficial cleaning. In 2002, the newly developed method of particle beam cleaning and cleaning by laser made it possible to remove soot and plaster without destroying the original surface.
Client:
Stiftung Denkmalschutz
Contractor:
Nüthen Restaurierungen GmbH & Co. KG
Representative:
RKS I Bautenschutz
Site address:
Pariser Platz , 10117 Berlin
Date / completion:
2003
Is it possible to visit the site?
No

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Further references

On the façade surfaces of Kaispeicher A, there was a lot of efflorescence and lime aging, both signs of penetrating moisture. The damage patterns indicated a lack of frost resistance as well as no protection against driving rain. The listed façade required extensive frost and moisture protection, but was not allowed to undergo any visual changes.
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The pool is permanently exposed to positive and negative water pollution. It was therefore important that an expansion zone remains in the middle of the joint seal, which allows the structure to work and provides an optimal surface. The joints should still be reliably sealed. Both the crack repair and the concrete repair were carried out in accordance with the classic procedure in accordance with the repair guidelines, in which cracks are closed by injecting epoxy or polyurethane resin using a drill packer. The concrete surfaces in particular had to be protected against chemical attack, especially against the high ammonium pollution from the connected meat industry.
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