Grouting of Monopiles Transition Pieces: 116 Piles, United Kingdom

Core provided grouting services as part of the installation of the bolted flange monopile TP foundations for an offshore wind farm

OVERVIEW

The grout was installed in order to provide impact and corrosion protection to the foundations.

Core used a high-capacity continuous jet mixing unit to ensure consistent grout quality and speedy operations.

EQUIPMENT

• High capacity continuous jet mixer
• Offshore silos
• Inhibitor dosing system.

SCOPE OF WORK

• 116 piles
• 4000 tonnes of material
• Water depth 19m.

OPERATIONS

• Ordinary Portland cement-based grout was used on the project
• A corrosion-inhibiting additive was added to the grout during mixing
• Grouting was carried out from the main foundation installation vessel
• Grout quality was continuously monitored during each operation
• Grout pumping was completed on average in 1 hour 15 minutes
• Associated technical support and project management was provided by Core.

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