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Granulated Blast Furnace Slag or GBFS is the residue of combustion in the furnace of the steel refining process.

It is obtained by quenching molten iron slag from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.

Uses:

• GBFS is the most used raw material in cement industry to make slag cement.

• Lightweight fill

• Raw material for the manufacture of glass

• GBFS can be used as a substitute for sand in building materials

Benefits :

• Reduced chloride permeability

• Improved resistance to sulfate attack

• Reduced heat of hydration in mass concrete

• Better workability

• Environmental friendly

• Improved compressive and flexural strength

• Reduced alkali-silica reaction

• Less bleeding

• Long slump retention

• Better reflectance

• Greater durability and thermal resistance

• Brighter color and reduced electricity