Production Capacity
Types and characteristics of blast-furnace slag cement
Chemical components of blast-furnace slag cement (KS L 5210)
Chemical component | Type 1 | Type 2 | Type 3 |
---|---|---|---|
Anhydrous Sulfuric Acid(SO3) % | 3.5 or less | 4.0 or less | 4.5 or less |
Magnesium Oxide(MgO) % | 5.0 or less | 6.0 or less | 6.0 or less |
Ignition loss % | 3.0 or less | 3.0 or less | 3.0 or less |
Physical performance of blast-furnace slag cement (KS L 5210)
Item | Type 1 | Type 2 | Type 3 | |||
---|---|---|---|---|---|---|
Fineness | Specific surface area(blaine) cm²/g | 3.000 or higher | 3.000 or higher | 3.300 or higher | ||
Stability | Autoclave expansion % | 0.2 or less | 0.2 or less | 0.2 or less | ||
Lechatelier(mm) | 10 or less | 10 or less | 10 or less | |||
Setting time | Vicat test | Initial setting | Minutes | 45 or higher | 60 or higher | 60 or higher |
Final setting | Hours | 7 or less | 10 or less | 10 or less | ||
Compressive strength MPa (N/mn²) | 3 days | 12.5 or higher | 10.0 or higher | 7.5 or higher | ||
7 days | 22.5 or higher | 17.5 or higher | 15.0 or higher | |||
28 days | 42.5 or higher | 42.5 or higher | 40.0 or higher |
Advantages of blast-furnace slag cement
Status of Certificates from External Certificate Authorities
2010. 09. 08
KS Certificate (KS L 5210): 2-type ground granulated blast-furnace slag2022. 08
GR F 4003 Certificate (Recycled Concrete Using Blast-Furnace Slag Cement)