White Silica Fume – The Ultimate Pozzolan

Price range: $107.80 through $1,716.00 Inc GST

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White Silica Fume is a premium pozzolanic additive meticulously formulated to enhance both the fresh and hardened properties of concrete. Recognized for its superior performance, White Silica Fume outperforms traditional pozzolans and other silica fume products by delivering highly workable mixes and achieving exquisite finishes. Essential for Glass Fibre Reinforced Concrete (GFRC) and wet cast mixes, this ultimate pozzolan ensures exceptional durability, reduced permeability, and enhanced mechanical strength, making it the perfect choice for industrial, construction, and large-scale projects.

Key Features & Benefits

  1. Superior Pozzolanic Activity
    • Enhanced Strength: Reacts with calcium hydroxide to form additional Calcium Silicate Hydrate (CSH), significantly boosting the compressive and tensile strength of concrete.
    • Improved Bonding: Reduces bleeding and enhances the bond between cement paste and aggregates, ensuring a more cohesive and robust concrete matrix.
  2. Reduced Permeability
    • Dense Pore Structure: Lowers the ingress of water and harmful chemicals, minimizing the risk of sulfate attacks and other adverse reactions.
    • Durability Enhancement: Creates an impermeable barrier that extends the lifespan of concrete structures by protecting against environmental degradation.
  3. Enhanced Workability & Finish
    • Highly Workable Mixes: Facilitates easier mixing, placing, and finishing, leading to smoother and more aesthetically pleasing surfaces.
    • Beautiful Finishes: Ideal for decorative concrete applications, providing flawless and refined appearances essential for high-end projects.
  4. Cost-Effective Performance
    • Efficient Material Use: Replaces 5-10% of Portland Cement, reducing overall material costs while maintaining high performance standards.
    • Long-Term Savings: Enhances the longevity of concrete structures, reducing maintenance and repair expenses over time.
  5. Environmental Benefits
    • Sustainable Construction: Incorporates recycled materials, contributing to eco-friendly building practices and reducing the carbon footprint of construction projects.
    • Reduced Cement Usage: Lowers overall cement consumption, supporting greener and more sustainable construction methodologies.

Recommended Applications

Industrial Projects

  • Wastewater Treatment Plants: Enhances concrete resistance to chemical attacks, extending the durability of tanks, pipes, and containment structures.
  • Manufacturing Facilities: Provides robust reinforcement for floors, walls, and infrastructure components subjected to heavy machinery and operational stresses.
  • Chemical Plants: Offers exceptional resistance to aggressive chemicals, ensuring long-lasting performance in harsh environments.

Construction Projects

  • High-Strength Foundations: Ensures superior bonding and reduced permeability for foundational elements, increasing overall structural integrity.
  • Bridges & Overpasses: Delivers enhanced durability and resistance to environmental factors, ensuring long-term performance under heavy loads and dynamic stresses.
  • High-Rise Buildings: Supports the structural framework with improved mechanical properties, contributing to the overall stability and longevity of skyscrapers.

Large-Scale Infrastructure

  • Dams & Reservoirs: Minimizes seepage and chemical ingress, safeguarding massive concrete structures against erosion and degradation.
  • Roadways & Highways: Improves the lifespan and resilience of pavements, reducing maintenance frequency and associated costs.
  • Tunnels & Underground Transit Systems: Enhances concrete performance in confined and high-stress environments, ensuring safety and durability.

Architectural & Decorative Concrete

  • Glass Fibre Reinforced Concrete (GFRC): Essential for producing intricate designs and lightweight, durable architectural elements with superior finish quality.
  • Wet Cast Concrete: Enhances workability and finish in precast concrete products, ensuring uniformity and aesthetic excellence.
  • Decorative Precast Elements: Reduces cracking and enhances surface finish for high-end aesthetic applications like ornamental panels and custom sculptures.

Ultra-High Performance Concrete (UHPC) & Specialty Mixes

  • High-Strength Columns & Beams: Reinforces concrete reaching compressive strengths beyond 150 MPa, ideal for cutting-edge architectural and engineering projects.
  • Impact-Resistant Structures: Perfect for blast panels, security barriers, and industrial floors handling heavy or dynamic loads.
  • Sustainability-Focused Projects: Supports eco-friendly construction initiatives by reducing cement usage and incorporating recycled materials.

Environmental & Sustainable Projects

  • Eco-Friendly Constructions: Aligns with green building standards by minimizing cement consumption and utilizing recycled components, promoting environmentally responsible construction practices.
  • Renewable Energy Facilities: Enhances concrete structures in solar farms, wind turbine bases, and hydroelectric plants, ensuring durability and resistance to environmental stressors.

Technical Specifications

  • Product Type: White Silica Fume (Pozzolan)
  • Packaging: 20kg bags
  • Recommended Dosage: Replace 5% to 10% of Portland Cement
  • Physical Form: Finely ground, white powder
  • Chemical Composition: High silica content with minimal impurities
  • pH Level: Highly alkaline
  • Specific Gravity: Approximately 2.8 × 10³ kg/m³
  • Particle Size: Ultra-fine for enhanced reactivity and dispersion

Why Choose White Silica Fume - The Ultimate Pozzolan?

  • Unmatched Performance: Surpasses other pozzolans and silica fume products in enhancing concrete’s mechanical properties and durability.
  • Enhanced Durability: Reduces permeability and chemical ingress, safeguarding concrete against environmental and operational stresses.
  • Aesthetic Excellence: Facilitates the creation of smooth, beautiful finishes essential for decorative and high-performance concrete applications.
  • Cost-Efficient: Lowers material costs by replacing a portion of Portland Cement while enhancing the mechanical properties of concrete.
  • Sustainable Choice: Supports eco-friendly construction practices by incorporating recycled materials and reducing overall cement usage.
  • Versatile Applications: Perfectly suited for a wide range of industrial, construction, and large-scale infrastructure projects, ensuring flexibility and reliability in various environments.
White Silica Fume - The Ultimate Pozzolan (20kg) is an essential additive for professionals aiming to elevate the quality and performance of their concrete projects. Whether working on industrial infrastructure, large-scale construction, or intricate decorative elements, this high-performance silica fume ensures enhanced strength, reduced permeability, and superior durability. Choose White Silica Fume to achieve exceptional concrete mixes that meet the demanding standards of modern construction and infrastructure development, all while promoting safer and more sustainable building practices.

Additional information

Weight20 kg
Dimensions70 × 42 × 12 cm
Bag

1 Bag (20KG), 24 Bags (480KG)

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

Expect prompt delivery and easy tracking — every order comes with updates along the way.

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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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