Density (g/cm3)

Specific Surface Area (cm2/g)

Setting Time

Initial Setting
58 minutes

Final Setting
610 minutes

Compressive Strength (MPa)

3 days

7 days

28 days

Applications of Blast Furnace Slag Cement 

There are numerous applications and uses for the slag cement such as:

Produces concretes with higher strength
Produces concrete with lower permeability which make it suitable for locations vulnerable to chloride and sulfate attacks; for example, piles and marine structures.
Makes concrete with lower heat of hydration; thus, it is a good choice for mass concrete such as dams.
Good choice for earth and water retaining structures such as retaining walls and tunnels.
Concrete producers like using slag since it is less costly than regular cement.

Panels made with using slag

Benefits and Advantages of Blast Furnace Slag Cement 

The initial strength achieved is less than the conventional concrete, but the superior ultimate strength attained is equivalent and sometimes higher than conventional concrete.
As the slag is finely grounded, it has the valence to fill the pores efficiently, workability is high and bleeding is low.
It has good persistence towards sulfate and chloride assault and even less risk of alkali-silica response with aggregates.
Because of the deliberate hydration procedure, the slump retention and initial setting time are further.
Greater persistence and reduced penetrance due to fineness.
Due to the white color of GGBFS, the cement color obtained is brighter colored when compared to conventional cement.
The production cost of this cement is less than the Ordinary Portland Cement (OPC).

Channel made with slag

Limitation and Disadvantages of Blast-Furnace Slag Cement 

Some types of slag has a slow rate of early strength gain, which makes these types unsuitable for saturations where high early strength is required such as repair works.

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Effect of SCMs on Alkali-Silica Mitigation