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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. 1 RAPID STRENGTH GAIN
  2. 2 FAST SETTING
  3. 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
Contact
Contact Us

Australia
102 Albatross Road
South Nowra
NSW 2541

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