Strengthening offshore structures
Since the year 2000 Densit ApS has grouted transition pieces to driven monopiles at 18 offshore wind farms.
Kentish Flats windfarm used Ducorit for the connection of tranistion pieces and monopiles (Photo: Phault/Creative Commons)
The Ducorit® grouted connection provides an efficient and competitive foundation concept for offshore wind turbines due to the extreme properties of the grout. It is carried out by filling the annulus between the transition piece and the pile with pumpable Ducorit® - a cement-based special grout that sets in less than 24 hours.
Ducorit® is a pumpable, ultra-high performance grout specially developed for offshore use. The core of the Ducorit® products is the unique Densit® Binder. The different properties of Ducorit® S1, Ducorit® S5 and Ducorit® D4 are obtained by adding aggregates such as quartz sand or bauxite.
Ducorit® products are characterised by:
• Extremely high strength and stiffness
• Minimal shrinkage
• Ultra high bond between Ducorit® grout and steel
• High early-age strength
• High inner cohesion i.e. no mixing with seawater
• Unique fatigue performance
Handles all phases
Densit handles all phases of offshore foundation projects - from engineering and planning, supply of grouting material and installation, to test sampling and documentation.
The foundation solution for offshore wind turbines is based on 25 years of technological development and experience in the strengthening of offshore structures in the oil & gas industry.
Further reading:
Densit ApS website.
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