BLAST FURNACE CEMENT CEM III / A 42,5 N
Blast furnace cement (BFC) is created through the addition of granulated blast furnace slag with Portland cement clinker and gypsum. Three types are available, namely A, B and C classes, based on the ratio of GGBS to Clinker.
- It is blended cement consists mainly of clinker ranging 35 – 64%.
- Blast furnace slag ranging 36 – 65% (for type A).
- In addition to gypsum, of about 5%.
- It is produced according to the standard specifications EN 197/1 – 2011.
Technical Benefits of Using BFC:
- BFC is used to make durable concrete structures around the world. It extends the lifespan of buildings from 50 years to 100 years.
- Concrete containing BFC is less permeable, has lower hydration, higher ultimate compressive strengths, is resistant to sulfate-acid attack and aggressive chemicals, resistant to many forms of deleterious attack, to alkali-silica reaction and has better workability and finish ability than normal concrete.
- Concrete made with BFC sets more slowly than concrete made with ordinary Portland cement, depending on the amount of GGBS in the cement, but also continues to gain strength over a longer period in production conditions. This results in lower heat of hydration and lower temperature rises, and makes avoiding cold joints easier, but also means that quick setting is required.
- The use of BFC significantly reduces the risk of damage caused by alkali-silica reaction (ASR), provides higher resistance to chloride ingress, reducing the risk of reinforcement corrosion, and provides higher resistance to attacks by sulfate and other chemicals.
- Packed in 3 plies craft paper bags each of 50 kg, each 1.5 ton inside sling bag.
- Bulk in jumbo bags each of 1.5 ton.
- Bulk in silo trucks.