UHPC systems
UHPC systems
SW Ultra-High-Yield Mine Void Filling Grout
SW produces a large volume of stable underground fill from a relatively small quantity of dry material, making it suitable for goafs, empty roadways and mine fire-control filling. Very High Filling Yield Depending on the selected grade, approximately 100–400 kg of dry material is required per cubic metre of filling material. Nine Water-Ratio Grades SW-3 to SW-11 cover water-to-powder mass ratios from 3:1 to 11:1. Stable Before Mixing, Rapid Setting Afterwards The separate A and B slurries remain flowable before combination and gel within 30 minutes after mixing. Designed for Large Underground Voids The material is suitable for goaf filling, abandoned roadways, cavity filling and underground fire-control grouting.
Review technical parametersSINO-SINASW Ultra-High-Yield Mine Void Filling GroutVerified product main image pending
Product overview
Performance and application overview.
SW Ultra-High-Yield Mine Void Filling Grout is a two-component inorganic filling material developed for large-volume underground filling.
It consists of separate Component A and Component B mineral powders. Each component is mixed with water independently. The two slurries remain flowable before mixing and are pumped through separate lines to the filling area.
SW grades use water-to-powder mass ratios from 3:1 to 11:1. Depending on the selected grade, water represents approximately 89.7% to 97.0% of the filling body by volume. Dry material consumption is normally about 100–400 kg per cubic metre.
After the two slurries are combined at a 1:1 ratio, the grout gels within approximately 30 minutes. The setting time can be adjusted for pumping distance and site conditions.
The hardened filling body is based mainly on a water-retaining mineral structure. When placed in a confined filling area, it develops sufficient early strength for goaf, roadway and cavity filling.
SW is intended primarily for high-volume filling and mine fire-control applications. It is not positioned as a high-strength structural rock-consolidation grout.
Technical parameters
Original product values for technical screening.
Values are reproduced without keyword editing. Final selection must follow the current approved technical data sheet, test method and project conditions.
The source-page headings and values are retained as published. Do not interpret an unlabeled value as a guaranteed minimum.
| Grade | Water/Powder Mass Ratio | Water Volume Content | 4 h Strength | 1 d Strength | 3 d Strength | 7 d Strength |
|---|---|---|---|---|---|---|
| SW-3 | 3:1 | 89.7% | 1.00 MPa | 1.60 MPa | 1.80 MPa | 2.00 MPa |
| SW-4 | 4:1 | 92.1% | 0.50 MPa | 0.80 MPa | 1.00 MPa | 1.20 MPa |
| SW-5 | 5:1 | 93.5% | 0.30 MPa | 0.50 MPa | 0.65 MPa | 0.80 MPa |
| SW-6 | 6:1 | 94.6% | 0.20 MPa | 0.40 MPa | 0.50 MPa | 0.60 MPa |
| SW-7 | 7:1 | 95.3% | 0.15 MPa | 0.25 MPa | 0.35 MPa | 0.40 MPa |
| SW-8 | 8:1 | 95.9% | 0.10 MPa | 0.20 MPa | 0.25 MPa | 0.30 MPa |
| SW-9 | 9:1 | 96.3% | 0.10 MPa | 0.15 MPa | 0.20 MPa | 0.25 MPa |
| SW-10 | 10:1 | 96.7% | 0.05 MPa | 0.10 MPa | 0.15 MPa | 0.20 MPa |
| SW-11 | 11:1 | 97.0% | 0.05 MPa | 0.10 MPa | 0.12 MPa | 0.15 MPa |
The source-page headings and values are retained as published. Do not interpret an unlabeled value as a guaranteed minimum.
| Parameter | Specification |
|---|---|
| Material system | Two-component inorganic filling material |
| A/B mixing ratio | 1:1 |
| Gel time after mixing | Within 30 minutes, adjustable |
| Approximate dry material consumption | 100–400 kg/m³ |
| Reference standard | GB/T 39337-2020 |
| Packaging | 25 kg moisture-resistant bags |
| Shelf life | 6 months |
Product usage
Application and installation guidance.
Typical Applications
• Goaf filling in underground coal mines
• Filling of abandoned and empty roadways
• Large underground cavity and void filling
• Bagged filling in mechanised mining operations
• Underground fire-prevention filling
• Sealing of air-leakage paths in mined-out areas
• Filling associated with selected partial-extraction mining methods
Application Method
1. Inspect and isolate the filling area.
2. Install retaining structures, bulkheads or filling bags where required.
3. Prepare Component A and Component B separately using the specified water ratio.
4. Maintain agitation while the separate slurries are stored.
5. Pump A and B through separate lines using matched flow control.
6. Combine the two slurries at a 1:1 ratio in an in-line mixer.
7. Deliver the mixed grout directly into the filling area.
8. Monitor filling level, pipeline pressure and slurry flow continuously.
9. Stop filling when the designed volume or level has been reached.
10. Flush slurry lines and mixing equipment immediately after completion.
The SW grade must be selected according to required filling yield, early strength, confinement condition and mine operating requirements.
Technical enquiry
Check whether SW Ultra-High-Yield Mine Void Filling Grout matches your project.
Include foundation type, grout geometry and volume, strength ages, flow requirement, temperature, standards, placement distance and equipment.