Description
Qiandao QD-F110 Onshore Wind Turbine Grouting Material
Qiandao QD-F110 is a high-performance, cementitious grout specially formulated for onshore wind turbine foundations, delivering high early strength, minimal bleeding, and excellent durability in demanding terrestrial environments.
Product Overview
Designed to meet the rigorous demands of onshore wind power construction, Qiandao QD-F110 provides superior bonding strength and resistance to environmental corrosion and moisture penetration. Its advanced non-shrink, high-fluidity formula facilitates easy pumping and placement, ensuring a reliable and durable connection between the steel tower and the concrete foundation. This grout is engineered to enhance construction efficiency and comply with strict international engineering standards for onshore wind farm development.
Key Features & Benefits
- High Early Strength: Achieves ≥20 MPa within 24 hours, accelerating project timelines and allowing for rapid load transfer.
- Superior Volume Stability: Prevents shrinkage cracking and ensures consistent load-bearing capacity throughout the operational lifetime of the turbine.
- Minimal Bleeding: Maintains a homogeneous mix to prevent segregation and ensure uniform performance, enhancing the grout’s integrity in critical foundation connections.
- Excellent Flowability: Designed for optimal pumpability and penetration into narrow annuli and anchor bolt cavities, ensuring a complete and void-free fill (Initial Fluidity ≥ 290mm).
- Exceptional Durability: Engineered to withstand varied onshore conditions, including environmental corrosion, moisture penetration, and dynamic operational loads.
Technical Specifications
Note: Performance indicators based on standard testing conditions.
| Test Items | Performance Indicators (QD-F110) | |
|---|---|---|
| Fluidity (mm) | Initial | ≥ 290 |
| 30 min | ≥ 260 | |
| Compressive Strength (MPa) | 1 day | ≥ 20 |
| 3 days | ≥ 40 | |
| 28 days | ≥ 60 | |
| Vertical Expansion Rate (%) | 3 hours | 0.1 – 3.5 |
| 24h – 3h | 0.02 – 0.5 | |
| Chloride Ion Content (%) | ≤ 0.1 | |
| Water Bleeding Rate (%) | 0 | |
Applications
Qiandao QD-F110 is the ideal solution for critical load-transferring connections in onshore wind projects and related civil infrastructure, including but not limited to:
- Wind turbine tower base grouting.
- Anchor bolt grouting and foundation connections.
- Transition piece and base ring grouting.
- Grouting of prestressing tendon ducts in bridges, viaducts, and industrial floors.
- Post-tensioning applications in precast concrete segments and building slabs.
- Grouting of anchorages and couplers in post-tensioning systems.
- Repair and grouting of honeycombs and voids in prestressed concrete members.
Frequently Asked Questions (FAQ)
1. What is the recommended mixing procedure for QD-F110?
The grout should be mixed using a high-shear colloidal mixer to ensure a uniform, lump-free consistency. Follow the specified water-to-powder ratio provided in the technical data sheet to achieve the desired fluidity for pumpability.
2. What is the pot life of the mixed grout?
The exact pot life can vary based on ambient temperature, but typically it is designed to allow sufficient working time for onshore pumping operations. It is recommended to maintain an initial fluidity of ≥290mm and a 30-minute fluidity of ≥260mm to ensure a successful pour.
3. How does QD-F110 ensure long-term durability in onshore environments?
Its advanced formulation provides low permeability, high resistance to moisture penetration, and excellent volume stability. This prevents the ingress of aggressive environmental elements and protects the foundation structure from corrosion and fatigue damage over its service life.
4. Can QD-F110 be used for post-tensioning duct grouting?
Yes. QD-F110 is specifically designed for grouting prestressing tendon ducts in bridges, viaducts, and industrial floors, as well as for anchorages and couplers in post-tensioning systems, ensuring complete void-free fill and corrosion protection for the tendons.
