GGBS
Granulated Blast Furnace Slag is obtained by rapidly chilling (quenching) the molten ash from the furnace with the help of water. During this process, the slag gets fragmented and transformed into amorphous granules (glass), meeting the requirement of IS 12089:1987 (manufacturing specification for granulated slag used in Portland Slag Cement). The granulated slag is ground to desired fineness for producing GGBS.
CHARACTERISTICS OF GGBS
Consistent Quality
High Durability
Sustainable
Value for Money
Advantages with GGBS
Reduces the temperature rise and helps to avoid early-age thermal cracking
Improved workability
High resistance to chloride penetration
High resistance to sulphate attack
It is off-white in color and substantially lighter than Portland Cement. Resultantly it helps soften the visual impact of a large structure as bridges and retaining walls.
Replacement in Concrete
Replacement rates for GGBS vary form 30% to upto 70%.
Higher replacement rates up to 70% are used in specialist applications such as in aggressive environment and to reduce the heat of hydration
Specification
| Color | Off-white powder |
| Bulk Density (loose) | 1.0-1.1 tonnes/m3 |
| Relative Density (vibrated) | 1.2-1.3 tonnes/m3 |
| Relative Density | 2.85 – 2.95 |
| Surface Area | 350 – 500 m2/kg blaine |
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