Rockfast Hydroblend™

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
- 1 RAPID STRENGTH GAIN
- 2 FAST SETTING
- 3 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
Configurations
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
Industry sectors
-
Coal Mining
-
Hard Rock Mining
Common use
- Cavity and backfilling
- Recovery of falls
- Standing support
Available Regions
- Australia and New Zealand (ANZ)
- Asia