Mixer
22 kW trial configuration, sized for uniform and continuous production
Documented offshore wind trial · February 2023
Full-scale grouting evidence for a pile–bucket composite foundation.
This public case summary is derived from a Sino-sina internal research report for a 200 MW-class offshore wind project. Client, supervision and third-party testing identities are intentionally withheld.
Why the trial mattered
The material, equipment and placement route were validated as one system.
The trial addressed both the pile–bucket cavity and the annular gap between structural elements. Its purpose was to verify the proposed grouting method and confirm that the selected high-strength non-shrink material could be assessed against the project acceptance criteria.
Project class200 MW offshore wind
ConnectionPile–bucket composite foundation
Material routeHigh-strength non-shrink offshore grout
Evidence basisInternal research report and witnessed sampling
Trial equipment
Continuous mixing, pumping and standby capacity were planned before placement.
These photographs come from the supplied report. Equipment ratings below describe this trial configuration and are not universal project requirements.
Project acceptance matrix
Requirements are presented as requirements—not as unqualified typical values.
Every value below is transcribed from the project table in the supplied February 2023 report. Product approval for another project requires the current approved TDS, test evidence and project specification.
| Property | Project requirement | Referenced method |
|---|---|---|
| Fresh density | ≥2350 kg/m³ | GB/T 50080 |
| Air content | ≤4.0% | GB/T 50080 |
| Bleeding | 0% | GB/T 50080 |
| Initial flow | ≥290 mm | GB/T 50448 |
| Flow at 30 minutes | ≥260 mm | GB/T 50448 |
| Flow at 60 minutes | ≥230 mm | GB/T 50448 |
| Vertical expansion at 3 hours | 0.1–3.5% | GB/T 50448 |
| 24-hour minus 3-hour expansion | 0.02–0.5% | GB/T 50448 |
| 1-day cube compressive strength | ≥50 MPa | GB/T 50081 |
| 3-day cube compressive strength | ≥85 MPa | GB/T 50081 |
| 28-day cube compressive strength | ≥130 MPa | GB/T 50081 |
| 1-day static modulus | ≥12 GPa | GB/T 50081 |
| 28-day static modulus | ≥45 GPa | GB/T 50081 |
| Initial setting time | ≥120 min | GB/T 50080 |
Installation readiness
The trial method treated standby equipment and QC as part of material performance.
The figures are presented as documented trial inputs. Final equipment selection depends on volume, hose distance, pressure loss, lift, temperature and placement window.
Primary and standby pump
50 kW trial configuration with replacement route planned within 30 minutes
Grout hose
3-inch hose in 10 m sections with quick couplings and pressure gauges
Pressure rating
Hose system specified for 1.5 times the maximum grouting pressure in the trial plan
Fresh water
5-tonne trial water storage for mixing and equipment cleaning
Site checks
Flow cone, temperature measurement, scales and approved strength specimens
Offshore wind technical review
Send the connection drawing and acceptance table before selecting a grout grade.
The public case does not replace a project-specific method statement or approved technical submittal.