Technologies - Sprayed Concrete

Advanced systems for high performing 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:

• Fast-setting alkali-free accelerator series (MasterRoc SA) produces sprayed concrete with early strength development and long-term strength.
• The 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.
• We offer a multitude of chloride-free liquid admixtures for improvement of plastic and hardened properties of concrete.
• Our specially formulated product for lubrication of equipment (MasterRoc LUB) can be applied prior to concrete pumping to avoid blockages.
• We also supply a cement hydration control system for wet and dry sprayed concrete applications (MasterRoc HCA) that are capable of maintaining 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.

MasterRoc HCA 10 - Cement hydration control system for wet and dry sprayed concrete, grouting and cement injection

MasterRoc LUB 1 - Lubricator for concrete pump 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 430- Liquid sprayed concrete accelerator for wet-mix spraying

MasterRoc SA 545- Alkali-free, non-caustic and non-toxic high performance powder accelerator for dry-mix sprayed concrete

MasterRoc STS 1000- Pre-bagged concrete for dry process shotcrete application

MasterRoc STS 1010 - Pre bagged concrete for dry process shotcrete application

MasterRoc STS 3210 - Spray applied, single component, polymer modified watertight mortar

MasterRoc TCC 735- Chloride-free liquid concrete improver

MasterRoc TCC 780 - Liquid pumping aid