Grain silos, Karstädt, Germany

Grain silos, Karstädt, Germany

Hamburg Germany Grain Silos Concrete repair Facade repair Rust protection M Betofix RM OS Concre-Fill Color PA Fill Concrete acrylic Color PA

The plant was built in the 70's during the GDR era. The complex consists of round cell silos with 45,000 m² of concrete surface for the storage of grain and a compound feed plant with 10,000 m² outdoor surface area.

Reference identification data
Construction project:
Concrete restoration
Building type:
Agricultural objects
Short description
The reinforcement had too little concrete coverage and the quality of the concrete also varied. This led to corrosion damage and concrete spalling. Since 2005, stricter regulations of the food law and hygiene regulations have been in force, which had to be observed. This meant that all surfaces had to be cleaned with a high-pressure cleaner at 500 bar water pressure in order to reach solid ground and to determine the true extent of the damage.
45.000 m²
UHR Betoninstandsetzung GmbH
Site address:
22761 Hamburg
Data sheet:
Date / completion:
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Sample of products or systems used


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Further references

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.
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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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