TG Syrlinstrasse

Short description

The tests carried out on the floor slab and ramp showed cracks in large areas that could not be bridged by the applied surface protection system.

The project

The office building at Syrlinstrasse 38 was built in 1999. A single-storey underground car park is located under parts of the building and the entire parking lot.

The underground car park is around 61 m long and around 16 m wide. Together with the ramp construction, this results in a drivable area of ​​around 1150 m².

Over the years, water containing de-icing salt in the crack areas could penetrate the reinforcement and trigger chloride-induced corrosion here. The remaining cross-sections of the reinforcement in the crack area in the tramline as well as in the ramp area implied that a repair based on the principle of cathodic corrosion protection in the underground car park is expedient.

In the floor area (floor slab and ramp), a titanium system in the form of grid anodes was used as the anode system due to the high current capacity in combination with a long service life and high resistance to chlorides. A titanium system in the form of strip anodes was used as the anode system on the wall and column bases of the underground car park and axis D, outside.