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GGBS
Ground Granulated Blast Furnace Slag (GGBS) is a byproduct of the iron and steel industry, obtained from granulated blast furnace slag (GBFS). It is produced by rapidly cooling molten slag with water or air to form a glassy, granular material, which is then ground into a fine powder. GGBS is widely used as a supplementary cementitious material (SCM) in concrete production.
Use of GGBS in cement and concrete results in improved workability and increased pumpability, low heat of hydration, increased strength, reduced permeability, high resistance to chloride penetration, sulphate attack and ASR and enhanced architectural appearance.
Benefits & Properties of GGBS in Concrete:
✔ Enhances Durability: Reduces permeability and improves resistance to sulfates and chlorides.
✔ Increases Strength: Contributes to long-term strength gain in concrete.
✔ Reduces Carbon Footprint: Replaces cement, lowering CO₂ emissions.
✔ Improves Workability & Finish: Provides smoother texture and reduces water demand.
✔ Thermal Benefits: Reduces heat of hydration, minimizing the risk of cracks in large concrete structures.
| CHARACTERISTICS | RANGE (%) | TYPICAL RESULT |
|---|---|---|
| Si02 | 32.00 to 38.00 | 35.48 |
| AL2O3 | 14.00 to 18.00 | 16.32 |
| CaO | 32.00 to 38.00 | 37.4 |
| MgO | 6.00 to 9.00 | 6.8 |
| Fe2O3 | 0.70 to 1.80 | 1.23 |
| Mno | 0.30 to 0.90 | 0.35 |
| Tio2 | 0.10 to 0.50 | 0.3 |
| Alkalis | 0.20 to 0.50 | 0.25 |
| Sulphide Sulphur | 0.20 to 0.50 | 0.3 |
| Chloride | 0.01 to 0.05 | 0.01 |
| moisture | 14 to 18 | 13 |
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