Description
Qiandao Fast-Setting High-Strength Repair Mortar
Qiandao Fast-Setting High-Strength Repair Mortar is a fast-setting, high-strength repair mortar specifically formulated for restoring damaged concrete surfaces, offering rapid strength development, excellent bonding performance, and long-lasting durability.
Product Overview
Qiandao Fast-Setting High-Strength Repair Mortar is a premium fast-setting repair mortar engineered for efficient and durable restoration of damaged concrete structures. This high-performance material achieves exceptional early strength, with compressive strength reaching ≥15 MPa in just 6 hours and ≥20 MPa in 24 hours, enabling rapid return to service. Its specially formulated fast-setting system provides an initial set time of ≥30 minutes and final set within 50 minutes, balancing adequate working time with quick hardening for minimal construction disruption.
Qiandao Fast-Setting High-Strength Repair Mortar exhibits outstanding tensile bonding strength of ≥0.6 MPa at 1 day on untreated substrates, ensuring superior adhesion to existing concrete surfaces without the need for specialized primers. Ideal for structural and non-structural concrete repairs, this mortar delivers lasting performance and excellent dimensional stability in various environmental conditions.
Key Features & Benefits
- Fast Setting & Rapid Strength Gain: Achieves ≥15 MPa in just 6 hours and ≥20 MPa in 24 hours, allowing for quick return to service and minimizing downtime.
- Optimal Setting Time: Initial set ≥30 minutes provides sufficient working time for application, while final set ≤50 minutes ensures rapid hardening.
- Superior Bonding Strength: Delivers ≥0.6 MPa tensile bonding strength at 1 day on untreated substrates, ensuring excellent adhesion and long-term durability.
- Versatile Application: Suitable for concrete crack repair, damaged surface restoration, and structural patch repairs in both interior and exterior environments.
- Easy to Use: Simple water mixing and application with standard trowels or spray equipment.
- Durable Performance: Provides excellent resistance to weathering, freeze-thaw cycles, and mechanical wear.
Technical Specifications
Note: Performance indicators based on standard testing conditions.
| Test Items | Performance Indicators (QD-004) |
|---|---|
| Compressive Strength (MPa) | 6 hours ≥ 15.0 |
| 24 hours ≥ 20.0 | |
| Setting Time (min) | Initial Set ≥ 30 |
| Final Set ≤ 50 | |
| Tensile Bonding Strength (MPa) | 1 day (untreated substrate) ≥ 0.6 |
| Packaging | 25 kg bag |
Applications
Qiandao Fast-Setting High-Strength Repair Mortar is ideal for a wide range of concrete repair applications, including but not limited to:
- Concrete crack repair and sealing.
- Damaged surface restoration and resurfacing.
- Structural patch repairs for spalled or delaminated concrete.
- Repair of concrete floors, walls, columns, and beams.
- Infrastructure maintenance for bridges, roads, and parking structures.
- Rehabilitation of industrial and commercial concrete structures.
Frequently Asked Questions (FAQ)
1. What is the recommended mixing procedure for Qiandao Fast-Setting High-Strength Repair Mortar?
Qiandao Fast-Setting High-Strength Repair Mortar should be mixed with clean water using a mechanical mixer or drill with a paddle attachment until a uniform, lump-free consistency is achieved. Always follow the specified water-to-powder ratio provided in the technical data sheet to ensure optimal performance and strength development.
2. What is the working time after mixing?
The initial set time is ≥30 minutes, providing adequate working time for mixing, application, and finishing. The final set is achieved within 50 minutes, allowing for rapid hardening and quick return to service.
3. Can Qiandao Fast-Setting High-Strength Repair Mortar be applied without a primer or bonding agent?
Yes. Qiandao Fast-Setting High-Strength Repair Mortar achieves ≥0.6 MPa tensile bonding strength on untreated substrates at 1 day, demonstrating excellent adhesion without the need for specialized primers or bonding agents. However, for optimal results, the substrate should be clean, sound, and saturated surface dry (SSD).
4. Is Qiandao Fast-Setting High-Strength Repair Mortar suitable for outdoor applications?
Yes. Qiandao Fast-Setting High-Strength Repair Mortar is formulated to provide excellent weather resistance and durability in both interior and exterior environments, making it suitable for a wide range of infrastructure repair projects.
5. What is the coverage rate per 25 kg bag?
Coverage depends on the thickness of application. For a 10 mm thick layer, approximately 25 kg of Qiandao Fast-Setting High-Strength Repair Mortar will cover 0.8 to 1.0 square meters. For specific project requirements, please consult the technical data sheet or contact our technical support team.
