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.

Sprayed Concrete Products

MasterRoc STS 112

MasterRoc STS 112 is a ready to use one pack polymer modified fine concrete specially designed for spray application by the 'dry-mix' method. It contains fumed silica, high range water reducing admixtures and carefully graded aggregates.

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MasterRoc HCA 20

MasterRoc HCA 20 is a chemical system for the storage and reuse of truck mixer wash water and fresh concrete and a set retarding agent for concrete

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MasterRoc LUB 1

MasterRoc LUB 1 is a specially formulated product for the lubrication of pumps, hoses and lines prior to concrete works. It consists of an inorganic main component and creates a thin lubrication film that reduces friction and prevents blockages.

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MasterRoc MS 610

MasterRoc MS 610 is a high quality silica fume powder for high performance concretes. It changes the porous structure of the concrete making it denser and more resistant to any type of external influence.

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MasterRoc MS 660

MasterRoc MS 660 is a high quality silica fume slurry for high performance concretes. It changes the porous structure of the concrete making it denser and more resistant to any type of external influence.

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MasterRoc MS 685

MasterRoc MS 685 is a liquid admixture based on a suspension of amorphous silica. These ultra-fine particles start working as soon as they are incorporated in the mix. The texture of the slurry is similar to cement paste.

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MasterRoc SA 160

MasterRoc SA 160 is a high performance alkali-free set accelerator for sprayed concrete. It is a liquid admixture whose dosage can be varied to the desired setting and hardening times.

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MasterRoc SA 161

MasterRoc SA 161 is a high performance alkali free set accelerator for sprayed concrete. It is ideally suited to wet-mix sprayed concrete for temporary and permanent ground support in tunneling and mining, and slope stabilization.

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MasterRoc SA 167

MasterRoc SA 167 high performance alkali-free set accelerating admixture is used for sprayed concrete. It is a liquid whose dosage can be varied to achieve desired setting and hardening times.

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MasterRoc SA 168

MasterRoc SA 168 is a high performance alkali-free set accelerator for sprayed concrete. It is ideally suited to wet-mix sprayed concrete for temporary and permanent ground support in tunneling and mining, and slope stabilization.

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MasterRoc SA 182

MasterRoc SA 182 is a high performance alkali free set accelerator for sprayed concrete. It is specifically suited to wet-mix sprayed concrete for temporary and permanent ground support in tunneling and mining, and slope stabilization.

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MasterRoc SA 183

MasterRoc SA 183 is a high performance alkali free set accelerator for sprayed concrete. It is ideally suited to wet-mix sprayed concrete for temporary and permanent ground support in tunneling and mining, and slope stabilization.

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MasterRoc SA 186

MasterRoc SA 186 is a high performance alkali free set accelerator for sprayed concrete. It is ideally suited to wet-mix sprayed concrete for temporary and permanent ground support in tunneling and mining, and slope stabilization.

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MasterRoc SA 187

MasterRoc SA 187 is a high performance alkali free set accelerator for sprayed concrete. It is ideally suited to wet-mix sprayed concrete for temporary and permanent ground support in tunneling and mining, and slope stabilization.

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MasterRoc SA 189

MasterRoc SA 189 is a high performance alkali free set accelerator for sprayed concrete. It is ideally suited to wet-mix sprayed concrete for temporary and permanent ground support in tunneling and mining, and slope stabilization.

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MasterRoc SA 430

MasterRoc SA 430 admixture is a shotcrete accelerator used mainly in the wet spraying process, but can also be used in the dry spraying process. MasterRoc SA 430 admixture is a liquid whose dosage can be varied to the desired setting and hardening times.

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MasterRoc SA 545

MasterRoc SA 545 is a high performance alkali-free, non-caustic and non-toxic accelerator for use in the dry-mix sprayed concrete process. It is a powder additive whose dosage can be varied to the desired setting and hardening times.

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MasterRoc SA 580

MasterRoc SA 580 is a high performance accelerator for use in the dry-mix sprayed concrete process. It is specially designed for temporary and permanent ground support in tunneling and mining and slope stabilization.

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MasterRoc TCC 735

MasterRoc TCC 735 is a chloride-free, multi-purpose liquid admixture which enhances the quality of sprayed concrete in both the plastic and hardened state.

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MasterRoc TCC 780

MasterRoc TCC 780 is a highly effective pumping aid that makes the concrete thixotropic and easy to pump, eliminating the risk of segregation.

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Richard Foord

Underground Construction Phone: +44 7966123397

E-Mail