GRC125S Combination Mixer System

GRC125-S Combination Mixer: A versatile, high-shear mixer by Power-Sprays, designed for both spray and premix GRC. Offers adjustable speeds, a powerful 11.2 kW motor, flexible 60–125 kg capacity, and pneumatic controls—all mounted on a robust support frame for easy cleaning and maintenance.

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The GRC125-S Combination Mixer continues Power-Sprays’ legacy of producing specialist equipment for Glass Fibre Reinforced Concrete (GRC). Engineered with a unique, in-house–developed mixing system, it facilitates both spray and premix GRC production. This innovative design combines powerful, variable-speed mixing with easy cleaning and maintenance, making it a standout choice for manufacturers aiming to optimise efficiency and achieve superior quality GRC mixes.

Key Features & Benefits

  1. Versatile Mixing Range
    • Variable Speed (0–1400 rpm): Offers precise control over shear levels, perfect for adapting to different mix designs and viscosities.
    • Flexible Capacity (60–125 kg / 130–260 lbs): Accommodates both small batches and larger production demands, ensuring consistent output quality.
  2. High-Shear Slurry Mixing
    • Powerful 11.2 kW 3-Phase Motor: Delivers robust torque to handle dense materials and efficiently blend fibres into the cementitious matrix.
    • Enhanced GRC Quality: Achieves uniform dispersion of aggregates, fibres, and admixtures for optimal mechanical properties.
  3. Pneumatic Controls
    • Bottom Discharge: Pneumatically operated release valve expedites material transfer directly into spray machines—reducing manual handling.
    • Lift/Lower Mechanism: Quickly raises or lowers the motor and mixer lid, simplifying access for cleaning or inspection.
  4. Easy Maintenance & Cleaning
    • Accessible Components: A design attentive to user feedback allows for swift disassembly, helping minimise downtime.
    • Sturdy Steel Support Structure: Provides a stable base for operation; optional platforms, access stairs, and guardrails enhance safety.
  5. Suitable for Spray & Premix GRC
    • Dual-Purpose Design: Perfect for preparing both cast and spray premix, as well as high-shear slurry for traditional sprayed GRC.
    • Consistent, High-Quality Results: Maintains the precise shear environment required for reliable, repeatable GRC performance.

Technical Specifications

FeatureDetail
Mixing Speed0–1400 rpm (variable speed)
Motor Power11.2 kW, 3-phase electric
Batch CapacityApprox. 60–125 kg (130–260 lbs)
ApplicationsSpray & premix GRC, high-shear slurry mixes
DischargePneumatic bottom discharge for direct feed
Mixer Head Lift/LowerPneumatic mechanism for quick access
MountingSteel support structure (platforms & stairs optional)
Additional ProtectionMay be required if powering from a generator

Optional Accessories

  • Platform Extensions & Access Stairs Ensure a safer, ergonomic working environment for operators.
  • Guard Rails Provide additional protection and compliance on elevated platforms.
  • Dispensing Systems Volumetric water, admixture, and polymer dispensers are available for automated dosing and consistent mix quality.

Why Choose the GRC125-S Combination Mixer from Power-Sprays?

  • Heritage of Innovation: Built on Power-Sprays’ extensive history of developing industry-leading GRC equipment.
  • Efficiency & Precision: Variable speed control and a high-shear mixing system guarantee uniform, high-quality GRC production with minimal waste.
  • User-Friendly Maintenance: Pneumatic lift mechanism and easily accessible components simplify cleaning, reducing downtime.
  • Customisable Setup: A robust steel support frame and wide range of optional accessories cater to diverse production needs.
Engineered for both spray and premix GRC applications, the GRC125-S Combination Mixer delivers a powerful, versatile, and user-centric solution. From the variable speed mixing and pneumatic discharge to the optional safety and dosing accessories, every aspect is designed to optimise productivity and maintain the highest standards of GRC consistency. Trust in Power-Sprays’ proven expertise to elevate your GRC manufacturing process—bringing efficiency, reliability, and performance together in one advanced mixer.
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We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To start a return, you can contact us at sales@mact.au
Please note that returns will need to be sent to the following address:
Unit 3C, 919-925 Nudgee Road, Banyo, QLD, 4014, Australia
If your return is accepted, we’ll send you instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. Please note that if your country of residence is not Australia, shipping your goods may take longer than expected.
You can always contact us for any return questions at sales@mact.au

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Got any question?

Browse through our frequently asked questions to find answers on everything from mould preparation and casting techniques to finishing and long-term maintenance.

Australia’s warm and, in many regions, coastal climate necessitates adjustments during manufacturing. High temperatures can accelerate hydration, so controlled curing environments—such as covering pieces with plastic to retain moisture—are essential. Additionally, lower water-to-cement ratios and carefully selected admixtures help mitigate rapid evaporation and ensure that GFRC develops its designed strength and durability.

Manufacturers address these challenges by:

  • Using precision mixing equipment to achieve a uniform blend and ensure proper fibre distribution.
  • Fine-tuning spray parameters (such as pressure, nozzle design and technique) to avoid voids, pinholes and surface defects.
  • Regular maintenance of equipment and continuous operator training.
  • Adjusting admixture dosages as required to optimise workability and adhesion.

Future trends include increased automation—such as robotic spraying and digital mould design—as well as a greater focus on sustainable practices (e.g. incorporating recycled materials and eco-friendly admixtures). Advances in fibre treatment technology and computer-aided manufacturing are enabling more complex, custom-designed panels. Ongoing research is continually refining mix designs and curing methods to better suit Australia’s diverse environmental conditions.

GFRC is a composite product that combines high‐quality cement, fine aggregates, polymers and alkali‐resistant glass fibres – all premixed to the correct proportions. Its high strength‐to‐weight ratio, durability and capacity for being cast in thin, custom shapes make it ideal for creating stylish and long-lasting benches and tables for both indoor and outdoor use.

GFRC manufacturers must comply with Australian building codes and standards relating to precast concrete, structural performance and safety. This means that production processes, material testing and installation methods are stringently monitored and documented. Close collaboration with local certifying bodies ensures that GFRC products meet all necessary performance and regulatory requirements.

With our premix product, all the ingredients are already proportioned for optimal strength and workability. This means you can focus on preparing your moulds and executing a neat cast rather than measuring raw materials.

Moulds for benches and tables can be constructed from high-density foam, melamine, or even silicone for more intricate designs. It is essential that the mould is smooth, watertight and well supported. Pre-treat the interior with a quality release agent to ensure that the cured GFRC can be removed cleanly.

Typical additional admixtures levels for a 20kg:

  • Water: 2.78L–3.0L
  • Plasticiser: 10g – 50g
  • Fibres HD: 50g-300g
  • Fibres Bundled: 400g-700g
  • Retarder: 5g-20g
  • Accelerator: 5g–20g
  • Defoamer: 1g-3g
  • Colour: up to 800g

*NOTE: All admixes will alter the way the mix behaves.

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