Property

ASTM Type I/II

PWCB

Physical

Fineness (m²/kg)

401.7

410.5

specific gravity

3.13

2.45

Chemical

SiO₂ (%)

20.49

67.35

Al₂O₃ (%)

4.26

14.70

Fe₂O₃ (%)

3.14

7.83

CaO (%)

63.48

2.19

MgO (%)

2.11

1.67

SO₃ (%)

2.9

0.15

Na₂O + K₂O (%)

0.49

1.21

LOI (%)

2.2

4.01