Ground Granulated Blast-furnace Slag (GGBS)
Lafarge Emirates' GGBS is a premium quality, supplementary cementitious material that can be combined with cement to produce concrete having several advantages namely reduced heat evolution, enhanced durability, better workability, delayed setting, etc.
GGBS of Lafarge Emirates Cement conforms both to BS 6699:1992 & ASTM C 989-99 standards. It is produced by grinding premium quality Granulated Blast-furnace Slag, a by-product of steel manufacturing process, to a fineness of around 400 m2/kg.
Granulated Blast-furnace Slag, consisting essentially of silicates and alumino-silicates of calcium and other bases, is formed when molten iron blast-furnace slag is rapidly chilled (quenched) by immersion in water. It is a granular product with very limited crystal formation, is highly cementitious in nature and hydrates like Portland cement when ground to cement fineness.