GRANULATED BLAST FURNACE SLAG

GRANULATED BLAST FURNACE SLAG

Blast Furnace Slag is an industrial by-product for production of pig iron from iron ore in blast furnaces. Molten Slag is cooled and dried by means of granulation so that it can be used as a bonding agent and transformed into the amorphous phase. The product activity of the granulated slag depends on the chemical structure of the amorphous phase, and Granulated Slag, along with cement, behaves as a binder in cement production if it is ground at a fineness of cement. The more active the slag is, the more resistant the concrete is. Iron ore, coke and limestone Warm air Slag Molten slag Iron Molten iron


GROUND GRANULATED BLAST FURNACE SLAG (GGBS)

If Granulated Blast Furnace Slag is ground at a fineness of 5000 – 6000 cm2 /g, so becomes a kind of hydraulic binder, then it is called ground granulated slag.



FIELDS OF USE

Ground Granulated Blast Furnace Slag is used as a mineral additive for concrete production and substitutes for cement. (TS EN 15167-1) Slag cement can be used as the main additive. (TS EN 197-1) Ground granulated blast furnace slag ensures that concrete has the following favorable features when it is used as a mineral additive at particular proportions in concrete. Fresh Concrete




• Facilitates workability and settlement;
• Increases impermeability;
• Decreases water need;
• Reduces shrinking when dried;
• Decreases heat of hydration;
• Slows down heat evolution;
• Decreases density of concrete;
• Enables use of coarse aggregate in larger amounts. Hardened Concrete
• Increases lifetime of concrete;
• Increases ultimate resistance;
• Increases strength development for the entire life of concrete;
• Minimizes alkali-silica reactions in aggregate;
• Increases resistance to aggressive environments (cid, sulfate, chloride);
• Reduces thermal cracks;
• Prevents diffusion of harmful liquids and gases;
• Increases freeze-thaw resistance by means of its nonporous structure.



www.musayapi.com.tr
export@musayapi.com.tr