40 metres below sea level REMOVAL OF GROUT AT A DEPTH OF 40 METRES
- Duration Five months
- Segment International contractors, Offshore
- Solution Grout Removal
How do you remove grouting at 40 metres below sea level and several kilometres from the coast? A major challenge for Boskalis. The large depth and pressure difference under water means there are no standard solutions for a job like this.
In order to create sufficient water pressure at this depth, this assignment required a custom solution. On a special ship from Boskalis, we transported two linked hydrodemolition units to the construction site. Together, they could provide a water pressure of 1600 bar and a volume of 330 litres per minute. Then, using various diving crews in continuous shifts, we removed the grout with a pressure strength of 170 N/mm². This assignment is a great example of the added value of our consultation and the input of our client when trying to overcome technical hydrodemolition challenges