Table 1 OPC CEM-1 chemical composition and physical properties.

Chemical compositions

 CaO

62.5

 SiO₂

20.6

 Al₂O₃

4.5

 Fe₂O₃

3.7

 SO₃

2.9

 MgO

1.6

 K₂O

0.7

 Na₂O

0.2

 Loss of ignition (LOI)

3.3

Physical characteristics

 Initial/final setting times

165/245

 Specific gravity

3.16

 Bulk density (kg/m³)

3160

 Soundness (Le chatelier apparatus)

0.5

 28-day compressive strength (MPa)

32

 Specific surface area (cm²/g)

3360

 Average particle size (µm)

65