FAST SETTING. LOW VISCOSITY.
Fast setting, low viscosity grout used for fall recoveries. Supplied as a ready to use free flowing blended cementitious powder. It requires only the addition of water in a suitable placing machine.
Uses include backfilling behind steel sets, replacement for timber chocks in longwall tailgates and recovery of falls in headings and intersections.
Advantages
- RAPID STRENGTH GAIN
- FAST SETTING
- REMOTE PUMPING
Features
- High volume output, typically 15-22 x 20kg bags required for 1m3, minimising transportation requirements underground
- Fast setting, minimising hydrostatic pressure, enabling chocks to be pumped without additional support in one shot
- Rapid strength gain ensuring early support
- Yields to ground pressure, thereby reducing stress concentration in strata
- Non shrinking, unlike timber cribs
- Can be pumped from a safe location up to 250m from job site
- Low alkalinity and safe to handle
- 12 Month shelf life
| WATER : POWDER RATIO | 1.75:1 | 2:1 | 2.5:1 |
|---|---|---|---|
| Gel time @ 20°C | 2-3 Minutes | 3-4 Minutes | 5-6 Minutes |
| Fresh wet density (kg per cubic meter) | 1300 | 1260 | 1370 |
Typical properties using 20°C potable water are as follows
| AGE | COMPRESSIVE STRENGTH @ W:P RATIO 1.75:1 | COMPRESSIVE STRENGTH @ W:P RATIO 2:1 | COMPRESSIVE STRENGTH @ W:P RATIO 2.5:1 |
|---|---|---|---|
| 1 Day | 5 MPa | 4 MPa | 3 MPa |
| 7 Days | 5.5 MPa | 4.7 MPa | 4.5 MPa |
| 28 Days | 6.5 MPa | 5.0 MPa | 4.8 MPa |
Product Options
- Rockfast Hydroblend 20KG - SKU NF0000059.
Packaging
- Supplied in 20kg bags
- Bags are packed on stretch wrapped wooden pallets
- 60 bags per pallet
