Pump Station B, Rees, Germany

Pump Station B, Rees, Germany

Rees Germany Pump Station B Concrete repair Betofix R4 SR Silicate R

The sewage company is a company owned by the city of Rees and fulfils the task of sewage disposal. It is responsible for the planning, construction and operation of the drainage systems and structures in the city area that are used for wastewater disposal.

There are 16 small and 7 large pumping stations with operational buildings on the site. The sewer networks are cleaned at regular intervals and visually inspected. In this way, damage can be quickly detected and remedied.

Reference identification data
Construction project:
Concrete restoration
Building type:
Clarification / bio-gas plants, sewage treatment
Short description
In the large pumping station with external drainage channel and underground pool area, biogenic sulfuric acid corrosion was shown at an advanced stage.
Abwasserbehandlungsverband Kalkar-Rees
Ingenieurbüro Matthias Witzel
SMG Bautenschutztechnik für Hoch- und Tiefbau GmbH
Site address:
46459 Rees
Date / completion:
Can the work be viewed?

Sample of products or systems used

More information

The permanent protection of the particularly chemically stressed surfaces was provided by the silicate mortar Silicate R.


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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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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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