Experimental Study on the Properties of Concrete Mixed with Iron Ore Tailings

Table 2

Chemical components and property indexes of ordinary Portland cement.

Chemical composition (%)

Compressive strength (MPa)

Flexural strength (MPa)

Soundness

Physical property

Proj

SO3

MgO

Loss on ignition

Cl^−

Specific surface (m^2/kg)

Setting time (min)

Final setting (min)

Val

1.62

3.18

3.4

0.028

3 d; 29.4

28 d; 49.5

3 d; 5.5

28 d; 8.1

Conformity

384

226

288