Contact Our Customer Services Team on (02) 8593 4283 for Bulk Quantities & Major Projects - - Free Standard Delivery to Metro Areas for Orders Over $1,000

Collection: Admixtures

Enhance the performance of your concrete with high-quality admixtures. Our advanced concrete additives improve strength, durability, and workability, ensuring optimal results for any project. Whether you need a concrete admixture for faster curing, reduced shrinkage, or increased resistance, our solutions are designed to meet the demands of modern construction.

39 products
  • MasterPozzolith 370
    MasterPozzolith 370 20 Litre Pail
    Non-retarding, Water-Reducing & Strength Enhancing
    Regular price
    from $119.00
    Sale price
    from $119.00
    Regular price
    Unit price
    per 
    Sold out
  • MasterPolyheed 8875
    MasterPolyheed 8875 20 Litre Pail
    Economical & Versatile Water-Reducing Admixture 
    Regular price
    from $95.00
    Sale price
    from $95.00
    Regular price
    Unit price
    per 
    Sold out
  • Econo-Net
    Econo-Net
    Medium-Duty Fibrillated Fibre Econo-Net offers
    Regular price
    $329.00
    Sale price
    $329.00
    Regular price
    Unit price
    per 
    Sold out
  • Forta-Fi
    Forta-Fi Fibres
    High-performance Synthetic Fibre Blend  Forta-Fi
    Regular price
    from $29.95
    Sale price
    from $29.95
    Regular price
    Unit price
    per 
    Sold out
  • ReoCo 65/60
    ReoCo 65/60
    Premium Type 1 Cold Drawn
    Regular price
    $55.95
    Sale price
    $55.95
    Regular price
    Unit price
    per 
    Sold out
  • ReoCo 80/60-HT
    ReoCo 80/60-HT
    High-performance Aspect Ratio Steel Fibre 
    Regular price
    $69.95
    Sale price
    $69.95
    Regular price
    Unit price
    per 
    Sold out
  • ReoCo 65/35
    ReoCo 65/35
    Premium Type 1 Cold Drawn
    Regular price
    $59.95
    Sale price
    $59.95
    Regular price
    Unit price
    per 
    Sold out

Concrete Admixtures 

Concrete admixtures enhance the characteristics of both fresh and hardened concrete. They are categorised into two main types: chemical and mineral admixtures, each offering distinct qualities that contribute to improved workability, durability, and strength of concrete.

Chemical admixtures affect concrete properties through chemical interactions. They are categorised into five distinct classes based on their functionalities as each chemical admixture achieves different results ranging from decreasing permeability and enhancing flowability to controlling the speed by which concrete sets. Superplasticisers are high-range water reducers that enhance flowability without compromising its structural integrity. Accelerators speed up the setting time and are typically used in cold weather applications. Set retarding admixtures slow down the setting time, making it ideal for hot weather applications or when transportation is extended. Air-entraining admixtures introduce air bubbles into the concrete mixture, improving workability and resistance to freeze-thaw cycles. Water reducers allow for a reduction in the water content of the concrete mix while maintaining its workability, increasing the strength and durability of the concrete while decreasing permeability. Chemical admixtures reduce the cost of construction and modify the properties of hardened concrete to ensure the quality of the concrete admixture is enhanced during transportation, mixing, curing and placing. 

Mineral admixtures are finely ground materials that are added to concrete to alter its physical properties and are often by-products of industrial processes or natural substances. They are used to change the properties of the concrete in hot weather conditions, making the concrete more cohesive, durable and less permeable. This helps concrete to withstand extreme temperatures and minimises the risk of cracking due to thermal expansion. The types of minerals used in concrete include silica fume, fly ash, metakaolin, rice husk ash and granulated blast furnace slag. These admixtures are mostly derived from other substances and are not chemically manufactured.

At Komerco, we hold an extensive collection of chemical and mineral concrete admixtures from Master Builder Solutions and Sika suitable for a wide range of project specifications. To explore our comprehensive range and learn more about which concrete admixtures are best suited for you, contact us today.