- Significant improvement in strength.
- Improves chemical resistance.
- Significantly inhibits alkali aggregate reactions.
- Excellent tolerance to salinity.
Features as a Concrete Admixture
Ground Granulated Blast Furnace Slag
|Raw cement material
|Blast furnace cement and ordinary Portland cement
|Ground improver and surface layer stabilizer
|Middle and deep-layer soil improver
|Inorganic grout material - Injected material/filler
Ground granulated blast furnace slag is produced by pulverizing granulated blast furnace slag produced by blast furnaces as a by-product of the iron-making process. This hydraulic admixture is popular for use as raw material for Portland blast furnace slag cement, admixture for raw concrete, and other applications.
Using ground granulated blast furnace slag in such applications saves the energy that would be needed for lime calcination in the manufacturing process of ordinary Portland cement. This also eliminates the release of carbon dioxide resulting from the decomposition of limestone. Ground granulated blast furnace slag is an environmentally friendly product.
Mixing this material into cement improves the chemical resistance, water-tightness, fluidity, and long-term strength of concrete. This material also significantly helps reduce cracking (exothermic suppression) and inhibit alkali aggregate reactions. This material is the perfect admixture for cement.
JFE Steel Group affiliates Chiba Riverment and Mizushima Riverment produce this material at JFE Steel Corporation East Japan Works in Chiba and the West Japan Works in Kurashiki.
Types of Blast Furnace Cement
|Type A blast furnace cement
|Type B blast furnace cement
|Type C blast furnace cement
|JIS A 6206 standard values
(Ground granulated blast furnace slag 4000)
|2.80 or more
|Specific surface area (cm2/g)
|3,500 to less than 5,000
|7 days old
|55 or more
|28 days old
|75 or more
|91 days old
|95 or more
|Flow ratio (%)
|95 or more
|Magnesium oxide (%)
|10.0 or less
|Sulfur trioxide (%)
|4.0 or less
|Ignition loss (%)
|3.0 or less
|Chloride ions (%)
|0.02 or less
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