Sprayed Concrete – ground support and stabilization for tunneling and mining industry
Master Builders Solutions advanced systems for high performance sprayed concrete
High quality, durable shotcrete (sprayed concrete) has become a vital component of ground support and stabilization in both tunneling and mining. Wet mix sprayed tunnel linings create state-of-the-art, monolithic and composite structures with a substantial reduction in cost and time, lowering health risks, increasing worker safety and reducing the environmental impact versus conventional dry mixes.
Constantly striving to exceed customer needs and demands, our admixture technologies enhance the performance, hydration control and viscosity of sprayed concrete:
alkali-free accelerator series (MasterRoc SA) produces sprayed concrete with early strength development and long-term strength.
- Combined use of
structural reinforcing fibers has greatly improved the load absorption performance, decreasing residual crack propagation and increasing long-term durability for permanent support.
- Multitude of chloride-free liquid admixtures for improvement of plastic and hardened properties of concrete.
- Specially formulated product for lubrication of equipment, MasterRoc LUB, can be applied prior to concrete pumping to avoid blockages.
hydration control system for wet and dry sprayed concrete applications, MasterRoc HCA, can maintain a pot life of up to 72 hours allowing for total and accurate flexibility of site logistics.
- By adding microsilica (MasterRoc MS) we reduce permeability to increase the density and long-term strength and durability performance of the sprayed concrete in its hardened state. Microsilica also can improve the pumpability and workability of the sprayed concrete system in its fresh state.
Sprayed Concrete Products
MasterRoc HCA 10 – Cement hydration control system for wet and dry sprayed concrete, grouting and cement injection
MasterRoc LUB 1 – Lubricator for concrete pumps, hoses and lines
MasterRoc MS 610 – Densified silica fume for cast and sprayed concrete
MasterRoc MS 660 – Silica fume slurry for cast and sprayed concrete
MasterRoc SA 160 – Alkali-free, liquid high-performance set accelerator for sprayed concrete
MasterRoc SA 167– Alkali-free, liquid, high-performance set accelerator for sprayed concrete
MasterRoc SA 545 – Alkali-free, non-caustic and non-toxic high performance powder accelerator for dry-mix sprayed concrete