Can MetaMax® be used in shotcrete or gunite?
We manufacture two products, our standard MetaMax® metakaolin and a special product for shotcreting and underwater applications, MetaMax EF. Both MetaMax and MetaMax EF can be used for shotcrete or gunite, but MetaMax EF can be used at lower concentrations, making it more economical for these applications. MetaMax EF is an ultrafine metakaolin that still reacts with the lime formed as a by-product of the cement hydration but also increases the cohesiveness of the concrete mixture. Both metakaolin products can improve the pumpability of the concrete while reducing the rebound of shotcrete and offering other benefits which can include increased strength, reduced permeability, increased chemical resistance and improved surface appearance.
