Description
Qiandao QD-60 High-Performance Polymer-Modified Grouting Material
Qiandao QD-60 is a high-performance polymer-modified cement-based grouting material offering early strength, high strength, non-shrink, and self-leveling properties, ideal for equipment foundation grouting, anchor bolt fixing, and concrete repair applications.
Product Overview
Qiandao QD-60 is a premium polymer-modified cement-based grouting material composed of specialty cement, refined quartz sand, and a combination of various functional polymer-modified admixtures. It exhibits early strength, high strength, minimal expansion, no shrinkage, and self-leveling properties. With exceptional long-term volume stability, frost resistance, and fatigue resistance, QD-60 ensures reliable performance in demanding applications. It is primarily suitable for grouting in various projects and can also be used for anchoring various equipment foundations, providing a durable and cost-effective solution for civil and industrial construction.
Key Features & Benefits
- Early & High Strength: Achieves ≥20 MPa within 24 hours and ≥60 MPa at 28 days, allowing for rapid equipment installation and load transfer.
- Non-Shrink & Minimal Expansion: Ensures excellent volume stability with vertical expansion rates of 0.1-3.5% at 3 hours and 0.02-0.5% from 24 to 3 hours, preventing cracking and ensuring tight contact with the base material.
- Self-Leveling Properties: Facilitates easy placement and ensures a smooth, void-free fill without the need for mechanical vibration in many applications.
- Excellent Flowability: Designed for optimal pumpability and penetration into narrow gaps, ensuring a complete and uniform fill (Initial Fluidity ≥ 290mm, 30-minute Fluidity ≥ 260mm).
- Superior Durability: Enhanced polymer modification provides outstanding frost resistance, fatigue resistance, and long-term volume stability, ensuring structural integrity over the service life.
- Zero Bleeding: Maintains a homogeneous mix to prevent segregation and ensure uniform performance.
Technical Specifications
Note: Performance indicators based on standard testing conditions.
| Test Items | Performance Indicators (QD-60) | |
|---|---|---|
| Truncated Cone 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-60 is a versatile grouting solution suitable for a wide range of industrial and construction applications, including but not limited to:
- Grouting of large equipment and precision anchor bolts.
- Secondary grouting of machine bases and equipment foundations.
- Rapid repair of bolt holes, road paving, and road sleepers.
- Secondary grouting of steel structures and concrete.
- Concrete repair and structural reinforcement.
- Grouting and anchoring during installation of special precast concrete components, stairs, and balconies in prefabricated buildings.
Frequently Asked Questions (FAQ)
1. What is the recommended mixing procedure for QD-60?
QD-60 should be mixed with clean water using a mechanical mixer or high-shear colloidal mixer until a uniform, lump-free, and self-leveling consistency is achieved. Always follow the specified water-to-powder ratio provided in the technical data sheet to ensure optimal performance.
2. What is the pot life of the mixed grout?
The pot life can vary depending on ambient temperature. Typically, QD-60 is designed to maintain sufficient workability for at least 30 minutes, with a fluidity of ≥260mm at 30 minutes, allowing adequate time for placement and leveling.
3. Can QD-60 be used for outdoor applications?
Yes. Its polymer-modified formulation provides excellent frost resistance and durability, making it suitable for both indoor and outdoor applications, including road paving and precast component installation.
4. Is QD-60 suitable for precision equipment grouting?
Absolutely. With its non-shrink, self-leveling, and high early strength properties, QD-60 is ideal for grouting precision anchor bolts and large equipment foundations, ensuring accurate alignment and immediate load transfer capability.
5. How does QD-60 compare to traditional cement grout?
QD-60 offers superior performance compared to traditional cement grout, including higher early and ultimate strength, zero bleeding, controlled expansion, self-leveling characteristics, and enhanced durability against freeze-thaw cycles and fatigue loads.
