Microsilica 600

is a highly reactive pozzolan. It is processed from a natural, white, silica deposit found in New Zealand. Like silica fume, it is a very fine amorphous silica and falls in the microsilica family of products. When added with Portland cement, Microsilica 600 facilitates high performance concrete by promoting:

    • Very low chloride ion diffusion
    • Increased compressive strength
    • Reduced water permeability
    • Improved sulphate resistance
    • Improved abrasion resistance
    • Improved resistance to chemical attack
    • Improved stability in geothermal environments
    • Reduced efflorescence

The NZ Standard NZS 3122:1995 - Specification for Portland and Blended Cements, classifies Microsilica 600 as a “silica fume”.

Microsilica 600 meets the performance requirements of most International Silica Fume Standards such as the Australian Standard-AS358.2, silica fume and the Canadian Standard - Can/CSA-A23.5M86 Supplementary Cementing Materials for Type U Silica Fume. In New Zealand, the Pacific and in Asia, Microsilica 600 is used in infrastructure projects, port & harbour development, commercial and industrial floors and the construction of buildings and structures located in aggressive environments.