GGBFS is formed when granulated blast furnace slag (GBFS) is further processed or ground using conventional cement clinker grinding technology. GGBFS can be off-white in appearance and could pass for a powder fineness typically between 380m2/kg - 420m2/kg.
GGBFS is typically used in activation of granular pavement materials and as a cementitious material in the manufacture of concrete, particularly where resistance to aggressive ground, water and aggressive environmental conditions are present.
Typical uses for GGBFS are:
- Activator for stabilizing granular pavement materials as the only stabilizing agent or in conjunction with small quantities of lime.
- As a general cementitious replacement 25 – 50% for cement in concrete construction.
- As a significant cementitious replacement min 65% for cement where long term durability in aggressive ground, water or air environments are required.
- As a high cementitious replacement > 80% in special grout mixes.
