SiO2

20~22.5%

Al2O3

4.6~7%

Fe2O3

3~5.%

CaO

Min64.0%

MgO

Max 4.0%

SO₃

Max1%

Loss of Ignition

Max1%

f-CaO

Max1.5%

Total Alkali

Max 0.8

C₃S

50~60%

C₂S

11~25.0%

C3A

6~11%

C4AF

7~15.0%

Moisture

Max 0.5%

Compressive strength 3days

Min28 Mpa

Compressive strength 28days

Min55 Mpa