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Collection: Admixtures

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