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.
|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|
|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|
Our FB200 low viscosity, high yield grout is used for many applications within underground mines. We have 20 years experience in using FB200 for stabilising rockfill to enhance stope extraction, constructing explosion rated ventilation seals, filling of large voids and constructing false pillars for pre-driven recovery roads.
We have developed variants for hostile conditions such as saline water, hot water and long distance pumping.
Typically pumped at a 2:1 water:powder ratio, FB200 can be used between 1:1 and 3:1 ratios depending on individual project requirements.
FB200 is supplied as a ready to use free flowing blended cementitious powder that only requires the addition of water in a suitable placing machine.
Minova's Tekpak® P Pumpable Crib System has been specifically developed to provide enhanced standing and roof support in underground coal mining and offers substantial benefits in terms of roof control, speed and ease of installation.
Tekpak® P is a two part chemical system consisting of Tekcem® P and Tekbent® which when mixed together rapidly reacts to produce a load bearing crib. Tekcem® P is a blended cementitous powder which forms an easy to pump slurry when mixed with water, remaining pumpable for 24 hours. Tekbent® is a low viscosity non setting liquid with an indefinite pumping life.
The system provides a more productive means to install roof support in longwall mining operations, providing increased safety for operational personnel and more cost effective mine production.
High yield, long life foaming grout primarily used for ventilation applications and cavity filling. Supplied as a ready to use free flowing blended cementitious powder that forms cement foam on mixing with water in a purpose designed placer.
Uses include explosion resistant ventilation seals, recovery of longwall face falls, backfilling behind steel sets, recovery of falls, rib stabilisation and general void filling.