TV-Tower Düsseldorf - Concrete ageing at the basement

Basic information

Location

• „Rheinturm“ – TV-Tower Düsseldorf, Germany

Features

• Ferroconcrete tower with visitor and antenna platforms, hight 240 m

Failures / defects

• Annular concrete faults with extensive corrosion losses of reinforcement at the basement

Process

• 2009

Tasks and results of investigation

Analysis of the defect causes

• Combination of insufficient concrete cover and bad concrete conditions at the joints

Verification of the load capacity with approach of the flaws

• Acceptable load capacity due to tolerable cross section losses

Development of strengthening and reconstruction

• Reconstruction for guarantee of concrete cover instaed of expensive strengthning

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