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    ​​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 20

    Chemical admixture that controls the dynamics of cement hydration, therefore suspending the hydration process

    MasterRoc STS 10

    Cementitious based shotcrete mix for sprayed applications

    MasterRoc MS 695

    Liquid colloidal silica​ designed to improve the properties of shotcrete and concrete in both plastic and hardened states

    MasterRoc SA 160

    Alkali-free, liquid high-performance set accelerator for sprayed concrete

    MasterRoc SA 167

    High performance alkali free set accelerator (AFA) for rapid production, durable sprayed concrete applications

    Direct contact

    Ryan Salter

    Segment Manager Underground Construction - ANZ

    0418 222 717

    Downloads

    Mining Solutions for Underground Construction.pdf

    pdf (2.16 Mb)

    Sprayed Concrete - Solutions for Underground Construction

    pdf (2.61 Mb)

    Waterproofing Solutions for Underground Construction.pdf

    pdf (910.57 Kb)