Also designed for batching plant use, MasterRoc HCA is a cement hydration control system for sprayed concrete that can maintain an open time of up to 72 hours, while MasterRoc TCC 780 is a pumping aid for sprayed concrete mixes with difficult or poorly graded aggregates. It improves the thixotropy of the mix, eliminating the risk of segregation and improving pumpability. BASF also offers ...
Sprayed concrete chemicals including superplasticisers, alkalifree accelerators, hydration control admixtures, shotcrete additives, air entraining admixtures, gunite materials, fibres, pump line primer and protective agents and cleaners. Superplasticisers. A range of superplasticisers that deliver high water reduction, high flowability, high durability, easier placement, slump protection and ...
Normet brought their sprayed concrete layer thickness control system, the SmartScan, to the market in 2019. The SmartScan is aimed at all underground sprayed concrete appliions to deliver accurate and reliable sprayed concrete layer thickness information for the sprayer operator, and fast and easy reporting for management purposes.
4 Solutions for the Mining Industry Sprayed Support The Master Builders Solutions brand offers a comprehensive range of products that achieve early and longterm strength in ground support. These products can be tailored to suit specifi c site requirements, offer compatibility to local cements and excellent longterm durability. Moreover, our innovations in alkalifree accelerators are a safe ...
System solutions Cement and mining industry . The cement and mining industry is under enormous pressure these days to innovate. In particular, the burgeoning importance of efficientenergy production plants and environmentally friendly processes constantly call for new developments. Dust, heat and hard mechanical loads are the hallmark of the operating conditions for drive solutions in ...
sprayed cement systems for mining Guidelines for Waterproofing of Underground Structures Epoxy Liner systems 8 Sprayed Coating Systems Cold Applied 9 Sprayed Coating Systems Polyurea 10 Cementitious Coating Systems 11 Hybrid Systems Poly Rubber Gels 13 Hybrid Systems Waterproof Concrete 14 CastinPlace Concrete Diaphragm Walls 16
Mining engineers, University of British Columbia, Vancouver, BC Abstract The National Institute for Occupational Safety and Health (NIOSH) is conducting research to develop safe practices for the use of shotcrete as ground support in underground mines, particularly mines operating in weak host rock. As part of this research, a rugged, portable direct tensile test system was developed for ...
· Even in mining appliions, concrete materials are sprayed over welded wire mesh as a reinforcement layer. Required mining stand times can exceed 50 years in main haulage ways, shaft bottoms, and crusher loions. Underground construction for water conveyance, tunnels, and transportation systems require long term stability, as well.
Sprayed concrete is mainly used in the following appliions: Excavation stabilization in tunneling and mining construction. Slope and trenching stabilization. Protective lining. Concrete repair (concrete replacement and strengthening) Special lightweight loadbearing structures. Restoration of historic buildings (stone structures) Sealing works.
Safer, deeper, faster: sprayed concrete — an integral component of development mining M. Rispin et al. 70 SRDM 2009, Perth, Australia . Technically, mining at depth typically brings with it more highly stressed ground, significantly higher temperature operating environments, logistical challenges to getting the ground support to the face, and a