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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
  • MasterRoc SA167 20 Litres
    Ultra High-performance Alkali-free Set Accelerator
    from $119.00
    from $119.00
    Sold out
  • MasterLife SF 100 10kg Bag
    Silica Fume Mineral Hardening Admixture
    $29.95
    $29.95
    Sold out
  • MasterRoc MS695 1000 Litres
    Concrete Improving Liquid Colloidal Silica
    $6,995.00
    $6,995.00
    Sold out
  • MasterLife 300D 16kg Bag
    Crystalline Capillary Waterproofing Concrete Admixture
    $199.00
    $199.00
    Sold out
  • MasterMatrix 220 18kg Bag
    Rheology Modifying Additive for Concrete
    $275.00
    $275.00
    Sold out
  • MasterLife SRA 200 20 Litres
    Shrinkage Reducing Liquid Chemical Admixture
    from $279.00
    from $279.00
    Sold out
  • MasterRoc SA160 20 Litres
    Alkali-free, Liquid High-performance Set Accelerator
    from $96.95
    from $96.95
    Sold out
  • MasterMatrix 614 20 Litres
    Pumpability & Finishability Concrete Aid 
    from $115.00
    from $115.00
    Sold out
  • MasterLife 2006 40 x 0.65kg Bag
    Pre-bagged Powdered Corrosion Inhibiting Admixture
    $5,495.00
    $5,495.00
    Sold out
  • MasterLife CI 30 20 Litres Pail
    Corrosion-inhibiting Admixture for Steel-Reinforced Concrete
    from $179.00
    from $179.00
    Sold out
  • MasterMatrix 362 20 Litres Pail
    Viscosity-enhancing & Rheology Controlling Liquid Admixture
    from $135.00
    from $135.00
    Sold out
  • MasterSure 1008 20 Litres Pail
    New Generation Super-slump Retaining Aid
    from $239.00
    from $239.00
    Sold out
  • Reoshore 45 1kg Bag
    High Performance Structural Polypropylene Fibre
    $27.50
    $27.50
    Sold out
  • Reoshore 58 5kg Bag
    High Aspect-ratio, Structural Polypropylene Fibre
    $119.00
    $119.00
    Sold out
  • ReoPave 25 10kg Bag
    Concrete Reinforcing Type-1 Steel Fibre 
    $54.95
    $54.95
    Sold out
  • MasterCast 1102 20 Litres Pail
    Plasticising Admixture for No-slump Concrete
    from $109.00
    from $109.00
    Sold out
  • MasterCast 1101 20 Litres Pail
    Concrete Masonry High-early Strength Admixture 
    from $139.00
    from $139.00
    Sold out
  • MasterAir 940 20 Litres Pail
    High-solids Ultra-stable Air Entraining Admixture 
    from $119.00
    from $119.00
    Sold out
  • MasterAir 905 20 Litres Pail
    Ultra-stable Air Entraining Concrete Admixture 
    from $79.95
    from $79.95
    Sold out
  • MasterSet Delvo Easy Pack of 10 x 0.25kg
    Chemical, Cement Hydration Control Admixture
    $1,295.00
    $1,295.00
    Sold out
  • MasterRoc HCA 20 (Delvo) 20 Litres Pail
    Chemical, Cement Hydration Control Admixture
    from $152.90
    from $152.90
    Sold out
  • MasterSet AC 534 20 Litres Pail
    Non-chloride Liquid Accelerating Concrete Admixture
    from $109.00
    from $109.00
    Sold out
  • MasterSet AC102 20 Litres Pail
    Accelerating & High-early-strength Liquid Admixture
    from $79.00
    from $79.00
    Sold out
  • MasterPozzolith RT300 20 Litres Pail
    Set Retardation & Performance Improving
    from $109.00
    from $109.00
    Sold out
  • MasterPozzolith 80 20 Litres Pail
    Water-reducing & Strength Increasing Admixture
    from $95.00
    from $95.00
    Sold out
  • MasterSet RT122 20 Litres Pail
    Set Retardation & Performance Improving Admixture
    from $89.00
    from $89.00
    Sold out
  • MasterRheobuild 1000NT 20 Litres Pail
    High-range, Water-reducing & Retarding Admixture
    from $139.00
    from $139.00
    Sold out
  • MasterGlenium SKY 8700 20 Litres Pail
    Superplasticising Admixture for Extended Slump
    from $199.00
    from $199.00
    Sold out
  • MasterGlenium SKY 8100 20 Litres Pail
    High-range Water Reducing/ Superplasticising Admixture
    from $239.00
    from $239.00
    Sold out
  • MasterPolyheed 8960 20 Litre Pail
    Versatile Mid-range Water-Reducer for Manufactured Sands
    from $195.00
    from $195.00
    Sold out
  • MasterPolyheed 8820 20 Litre Pail
    Normal-to-Mid Range Water Reducing Admixture
    from $139.00
    from $139.00
    Sold out
  • MasterPolyheed 8830 20 Litre Pail
    Non-chloride Mid-range Water Reducing Admixture
    from $145.00
    from $145.00
    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.