CBGM-5 is engineered as a low-density, buoyant grout for suction bucket foundations, ensuring stable installation in offshore wind farms.
Summary Benefits at a Glance:
Low Density – bulk density 680–750 kg/m³, reducing grout weight
High Buoyancy – improves suction efficiency and uplift stability
Long Flow Retention – initial fluidity ≥ 290 mm, ≥ 150 mm after 8 h, ensuring continuous placement
Volume Stability – 24 h free shrinkage = 0, reliable under marine and tidal conditions
Product Introduction
CBGM-5 is a non-shrink grouting material specially developed for offshore wind suction bucket foundations. Unlike conventional high-density grouts, CBGM-5 emphasizes low bulk density and buoyancy, making it particularly suitable for suction-assisted installation. It maintains excellent fluidity and flow retention for long-duration pours, even under tidal influence. The product delivers stable volume change, impermeability and resistance to marine conditions, ensuring safety and long service life of offshore wind foundations.
Product Parameters
| Test Item | Technical Index | Test Standard |
| Appearance | Gray powder | Visual |
| Bulk density (kg/m³) | 680–750 | GB/T 5486 |
| Apparent density (kg/m³) | 1300–1500 | GB/T 50080 |
| Initial fluidity (mm) | ≥ 290 | GB/T 50448 |
| Retained fluidity 30 min (mm) | ≥ 260 | GB/T 50448 |
| Retained fluidity 60 min (mm) | ≥ 230 | GB/T 50448 |
| Retained fluidity 240 min (mm) | ≥ 200 | GB/T 50448 |
| Retained fluidity 480 min (mm) | ≥ 150 | GB/T 50448 |
| Bleeding rate (%) | 0 | GB/T 50448 |
| 24 h free shrinkage (%) | 0 | GB/T 50080 |
| 7 d compressive strength (MPa) | ≥ 0.2 | GB/T 17671 |
| 28 d compressive strength (MPa) | ≥ 0.5–5 | GB/T 17671 |
Product Usage
Suction Bucket Foundations – specialized grout for suction-assisted offshore wind turbine installation
Marine Engineering – grouting under tidal and underwater conditions requiring buoyancy and stability
Offshore Wind Foundations – anchoring systems needing low-density, non-shrink grout
Application Notes
Mix with clean water per recommended ratio; stir until uniform.
Place within 10 minutes after mixing; grout continuously from one side to avoid air entrapment.
Protect freshly placed grout; keep moist for at least 7 days.
Packaging: 25 kg moisture-proof bags.
.Shelf life: 6 months in dry, ventilated storage.
Product Documentation
CBGM-5 – Low Density Non-Shrink Grouting Material for Suction Bucket Foundations
CBGM-5 Suction Bucket Grout | Low Density Non-Shrink Offshore Wind Foundation Material
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