What is MetaMax® high reactivity metakaolin?
MetaMax is a “cement enhancer” known as a mineral admixture, pozzolan or supplementary cementing material. When cement hydrates it forms lime [Ca(OH)2] which is the “weak link” in cement-based systems. Lime does not contribute to the strength of the cement paste and can become soluble and migrate to the surface where it will redeposit and form unsightly white staining known as efflorescence and will leave a vacancy in the cement paste which causes increased porosity and reduced permeability. MetaMax reacts with the lime to form beneficial cementitious products, which stabilizes the lime.
