Cellular grout is made by incorporating microscopic air bubbles in a cement or cement/aggregate matrix. As well, other applications for cellular grout exist in mines.
Void Fills: Normal mining operations often encounter areas of incompetent rock or complete voids which need to be backfilled before mining can commence. Cellular grout, when used as a void fill, provides a solid, lightweight or weight reducing fill, which aids in uniform load distribution.
Highwall Mining Backfill: Cellular grout is an excellent material for backfilling abandoned horizontal drifts and stopes. Cellular grout is
both flowable and self-leveling and with uniform and controlled in-place densities and strengths, it can be designed to work in a variety of highwall backfill applications.
Tunnel Cuts: Roof Collapses in unstable ore veins often lead To long-term shutdowns for mucking out or re-routing. Use Cellular grout to fill these areas along with any voids and then
proceed with tunneling operations through the Cellular grout. Stability is restored and mining resumed. Cellular grout densities range from 12pcf to 100 pcf and have compressive strengths in the range of 25 psi to 4000 psi.
Vertical Shaft Plugs: Abandoned vertical jet bore holes and vent shafts can be quickly and economically plugged using Cellular grout at low densities. When pumped from below, a minimum of formwork is required.
|
