GGBS (Ground Granulated Blast Furnace Slag) - is a by-product of iron and steel manufacturing, obtained by rapidly cooling molten slag from a blast furnace and then finely grinding it into powder. It is widely used as a cementitious material in concrete production.
GGBS Applications
1) Cement Replacement - Used in blended cements (PSC, PPC) for greener products.
2) Ready Mix Concrete Production -Enhances workability, strength, durability and lifespan of structures
3) Road Infrastructure - Used in Pavements, Bridges, Tunnels for longevity.
4) Marine & Underground Structures - Provides high resistance to chloride and sulphate attacks
Ground Granulated Blast Furnace Slag(GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.
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Ground granulated blast furnace slag (GGBS) is a by-product from the blast-furnaces used to make iron. Blast furnaces are fed with controlled mixture of iron-ore, coke and limestone, and operated at a temperature of about 1,500�°C. When iron-ore, coke and limestone melt in the blast furnace, two products are producedâ??molten iron, and molten slag. The molten slag is lighter and floats on the top of the molten iron. The molten slag comprises mostly silicates and alumina from the original iron ore, combined with some oxides from the limestone. The process of granulating the slag involves cooling of molten slag through high-pressure water jets. This rapidly quenches the slag and forms granular particles generally not bigger than 5 mm. The rapid cooling prevents the formation of larger crystals, and the resulting granular material comprises around 95% non-crystalline calcium-alumino silicates. The granulated slag is further processed by drying and then grinding in a vertical roller mill/rotating ball mill to a very fine powder, which is GGBS.
