CEMEX GGBS
(BS 6699 Ground granulated blast-furnace slag for use with Portland cement)
A latent hydraulic binder that can be used as a Type II addition with Portland cement (CEM I) to produce the designated combinations given in BS 8500 (CII-S; CIIIA; CIIIB). The cementitious properties of ggbs are activated in the alkaline environment generated by hydration of Portland cement. The two materials are, thus, complementary and typically, over 50% of CEM I cement may be replaced by CEMEX GGBS, while still achieving 28 day strengths consistent with class 42,5 performance.
Concretes containing GGBS are economical and also provide enhanced durability / chemical resistance, compared to those made with CEM I cements alone.