Metakaolin
 
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R-E-D Industrial Products

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METAKAOLIN'S ORIGIN
Metakaolin

Metakaolin is a dehydroxylated form of the clay mineral kaolinite. Metakaolin is commonly used in the production of ceramics, but is also used as cement replacement in concrete. Metakaolin has a smaller particle size (∼1–2 μm) and higher surface area compared with Portland cement, but a larger particle size than SF.

Sourced from

https://www.sciencedirect.com

METAKAOLIN USES
METAKAOLIN
  • High performance, high strength, and lightweight concrete

  • Precast and poured-mold concrete

  • Fibercement and ferrocement products

  • Glass fiber reinforced concrete

  • Countertops, art sculptures (see for example the free-standing sculptures of Albert Vrana)

  • Mortar and stucco

METAKAOLIN BENEFITS
Metakaolin
  • Increased compressive and flexural strengths

  • Reduced permeability (including chloride permeability)

  • Reduced potential for efflorescence, which occurs when calcium is transported by water to the surface where it combines with carbon dioxide from the atmosphere to make calcium carbonate, which precipitates on the surface as a white residue.

  • Increased resistance to chemical attack

  • Increased durability

  • Reduced effects of alkali-silica reactivity (ASR)

  • Enhanced workability and finishing of concrete

  • Reduced shrinkage, due to "particle packing" making concrete denser

  • Improved color by lightening the color of concrete making it possible to tint lighter integral color.