Rijkszee- en Marinehaven Den Helder
ADS removed a concrete plug down to 3 metres below the waterline from a damaged steel tubular pile in the harbour of Den Helder — using a specially developed support structure for maximum safety and precision.
Duration
Two days
Removing a concrete plug below the waterline
For client Ballast Nedam Marine & Civiel B.V., ADS had to solve a tricky problem in the harbour of Den Helder. As a result of collision damage, the existing steel tubular pile had to be opened up in order to build on it further. A concrete plug of approximately 1.5 metres had to be removed from the steel tubular pile, below the waterline to a depth of approximately 3 metres.
Custom solution delivered in two days
ADS developed a support structure especially for this project, which was attached to a construction crane. With the high-pressure water nozzles on this structure, the concrete plug could be removed precisely and safely, even below the waterline. The complete assignment was successfully completed within two days.
Custom support structure for hydrodemolition under water
No problem for ADS! Hydrodemolition below the waterline requires a custom approach. For this project, a special support structure was made attached to a construction crane, to which the high-pressure water nozzles were fixed. Safety and precision were thereby guaranteed. The concrete plug was successfully removed without damaging the steel tubular pile.
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