Table 1 Oxide contents (mass %) of the raw materials

From: Evaluation of low-carbon cementitious composites in marine environment for coastal protection and artificial reef substrate

Raw material

Mass fraction w/%

Al2O3

SiO2

CaO

Fe2O3

Na2O

MgO

SO3

K2O

Medium-grade kaolin

32.9

55.7

2.17

4.18

0.479

0.743

0.686

1.34

Slag

15.6

29.6

36.4

0.372

0.762

9.69

5.19

0.305

Hydrated lime

0.204

0.331

73.7

0.302

-

25.3

0.069

-

OPC

3.87

21.2

65.3

3.10

-

0.816

4.28

0.679

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