Modern Mining April 2019

PRODUCT News

Pre-bagged products for the mining sector

Above or below ground mining activities require materials to be of an exacting standard and to meet high safety requirements. Technicrete has a range of pre-bagged concrete mixes as well as heavy-duty blocks which not only meet these safety concerns but offer cost effective solutions for applications in the mining sector. The pre-bagged products from Technicrete offer an all-in-one solution such as concrete in various strength grades, high abrasion resistant concrete, pumpable concrete and special grouts, all of which can be tailor-made for specific solutions. The pre-bagged concrete mixes are used for the construction of dams, floors, box fronts, drains, sumps, foundations to machinery, sprayed concrete for support and abrasion resistant applications. Some of the specialised pre-bagged mixes include Ore Pass Lining which is a special concrete that is used for the lining of ore passes and underground silos where high abrasion resistant properties are required. It is easy to mix and place with minimal vibrating required. HTWetcrete is a pre-bagged wet shotcrete mix for use in under- ground support, rockface lining, or in structural repair situations. Two versions are available, the fibre-reinforced or the non-rein- forced types both providing excellent pumping characteristics. HT Wetcrete drastically reduces rebound characteristics, whilst rebound losses are normally reduced to 5 % of total material sprayed. The Drycrete product is a dry shotcrete mix for use in under-

ground support, rockface lining, or in structural repair situations. It can be supplied with or without steel fibre reinforcing or polypropylene reinforcing. Quick set characteris- tics are available for applications where an early strength gain is required. Roof Bolt Grout is a pre -bagged cementi- tious grout material for use in rock anchor support. It can easily be

Technicrete offers a range of prebagged products designed for use in mining.

pumped using different types of pumping equipment and is supplied in standard, medium

or quick set materials providing a choice of required support char- acteristics. The standard set Roof Bolt Grout has a pull-out strength that exceeds 10 tons at 24 hours (tested using a 300 mm pipe sec- tion pull out test) when the correct water/cement ratios are used. The product does not segregate during pumping operations. Other specialised pre-bagged options include: Buildmix, Boxcrete, HSWR, Pumpcrete, Novax, Plastermix, Technimix, TSL and Voidcrete, all of which have specific applications for use in the mining sector. Technicrete, website: www.technicrete.co.za

April 2019  MODERN MINING  45