75% of the capacity installed or under construction offshore is based on the monopile concept whereby transition pieces are grouted to piles by applying Ducorit®.
A monopile foundation consists of a steel pile driven into the seabed and a transition piece slid onto or into the pile. After adjustment of the verticality of the transition piece, the space between pile and transition piece is grouted with Ducorit® which is mixed and pumped through flexible hoses into the annulus.
A tripile foundation consists of three steel piles driven into the seabed after which a three-legged transition piece structure is slid into the three piles. The overlaps between piles and transition piece are grouted with Ducorit®.
The Ducorit® connections evenly distribute the forces from the three-legged transition piece to the piles.
Presently, ITW Engineered Polymers provides turnkey grouting services to Bard Engineering's patented tripile foundations at their wind farm in the North Sea.
A tripod support structure/foundation is secured in place by driving threepiles into the seabed through a sleeve in each of the three corners.
Ducorit® is pumped into the annuli between pile and sleeve to ensure a strong and durable connection.
When erecting the Alpha Ventus wind farm in the North Sea, ITW Engineered Polymers grouted six tripod foundations for the 5 MW wind turbines.
All ITW EP offshore foundation installations come with a complete grouting service which includes consultancy, design, planning, and supply of grouting material, installation, test sampling and documentation for any offshore structure design and installation scheme.