Co-R (Concrete additive)

Made from granulated blast-furnace slag (GGBS or GBFS) and known as material for Slag Cement.

Obtained from quenching molten slag (of nickel, copper, iron and steel- making) from a blast furnace into water system, which produce a glassy, granular product then further dried and ground into a fine powder.

We have Co-R grounding capacity of 360,000 tons per annum and ready for distribution for domestic market, delivery by 30 or 32 tons Hi-Blow Truck.

 

 

 

Chemical Composition %
Calcium Oxide (CaO) 20 – 30
Silicon Dioxide (SiO2) 35 – 45
Aluminium Oxide (Al2O3) 5 – 8
Iron (III) Oxide (Fe2O3) Max 3.4
Magnesium Oxide (MgO) 16 – 22
Density 1.2 g/cm3
Specific Gravity 2.8 – 2.9
Fineness, Blaine number > 400 m2/kg
Moisture Content           < 1 %

 

Co-R used as concrete additive in various product: Percentage (%)

  • Ready mix (K 300) up to 30%
  • Concrete product (K500) up to 20%
  • Plester & Acian up to 30%

Advantages of mixing with Co-R:

  • Improve sulfate resistance
  • Improve pore refinement
  • Reduce permeability
  • Improve long-term strength
  • Less heat generated during hydration