Metakaolin additive

METAKAO™ is a premium metakaolin additive engineered to provide a high-level of pozzolanic reactivity, thus enhancing concrete and cement-based product performance. METAKAO is a proven, readily available, highly reactive alternative to fly ash, slag and silica fume.

Performance beyond standard pozzolans

The METAKAO additive reacts with the free lime in Portland cement to increase the formation of calcium silicate hydrate (CSH). The additional CSH formed increases the cementitious bonds in concrete to make it stronger, more durable and less porous.

Engineered for increased pozzolanic reactivity

METAKAO additive is an ultra-fine material produced from the aluminum silicate mineral kaolin that meets the technical specifications for ASTM C-618 and AASHTO M295-11, Class N pozzolans. Our proprietary manufacturing process optimizes pozzolanic reactivity and ensures the product meets the highest standards of quality and consistency.

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Find out how METAKAO can enhance your concrete and cement. Request your free sample today!



  • Improves strength, durability, and workability of Portland concrete
  • Produces a smoother finish, minimizing cracking and shrinkage
  • Reduces permeability, alkali silica reactions (ASR) and efflorescence
  • Improved chemical and moisture resistance
  • Inert material that is safe and easy to handle
  • Available in 50lb bags, 2,000 lb super sacks and bulk delivery


  • High-performance, high-strength and lightweight concrete
  • Precast and poured-mold concrete products
  • Oilfield cement and drilling fluids
  • Dry-bagged products
  • Fibercement and ferrocement products
  • Metal casting
  • Specialty uses

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