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 alk​ali-free accelerator series (MasterRoc SA) produces sprayed concr​ete 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.

​​​Sprayed Concrete Essentials

Superplasticisers​​

MasterGlenium 51 - High range water-reducing liquid admixture for concrete​
​MasterGlenium SKY 1966 - High-performance liquid superplasticizer for concrete
MasterGlenium 399 - High range water reducing powdered admixture for concrete

Hydration Control

MasterSure 1970​ - Innovative consistence-retaining admixture for concrete
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Accelerators

MasterRoc SA 160 - High performing liquid Alkali-Free Accelerator for medium early age strength gain
​​​​​​​ MasterRoc SA 184 - High performing liquid Alkali-Free Accelerator for high early age strength gain
​MasterRoc SA 545 - High performing powdered Alkali-Free Accelerator for medium-high early age strength gain

Fibres

MasterFiber 151 - High quality Polypropylene fiber for reinforcement in sprayed concrete and cast concrete applications

​Sprayed Concrete Application Aids

Protective Agents and Cleaners​

MasterFinish MPT 299 - Environmentally friendly Solvent-free protective agent for machinery and equipment​
​MasterRoc MP 230 CLN - Organic-based solvent for cleaning sprayed concrete pumps, lines and other associated equipment

Pump Line Lubricator

MasterRoc LUB 1 - Specially formulated product for the lubrication of pumps, hoses and lines prior to concrete works
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Dry Spray Mortar

MasterRoc STS 1500 - Acrylic resin for the consolidation of sand/silt based strata and for injection into fine joints and fissures in rock​​

​High Performance Sprayed Concrete 

Concrete Improvers​

MasterEase 5200 - Liquid High range water reducing admixture with superior rheology, reduced mixing time and improved consistence retention performance​
​MasterMatrix SDC 150 - Liquid rheology modifying admixture for improving perfomance of wet and hardened concrete
MaterMatrix SCC 210 - Powdered rheology modifying admixture for improving perfomance of wet and hardened concrete
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Concrete Bonding Agents

MasterRoc TCC 735 - Liquid curing admixture leading to low-shrinkage, high bonding and high strength concrete​​
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Air Entrainers

MasterAir 130 - L​iquid air-entraining admixture
​MasterAir 760 - Powder air-entraining admixture

High Strength Concrete Admixtures

MasterRoc MS 610 - High quality powdered silica fume for high performance concretes
MasterRoc MS 660 - High quality silica fume slurry for high performance concretes
MasterRoc MS 685​ - High quality nano silica fume slurry for high performance concretes​