Portland cement 42.5R.42.5N,52.5R,52.5N,62.5R,62.5N

42.5n grade ordinary portland cement

Cement with high strength, high early strength, good abrasive-resistance and front resistance, short hydration time and strong cement structure;

Usages: Normally used in common industry or civil construction such as road, railway, bridge, tunnel etc. Not suitable for underground sulfate condition, high temperature condition or construction with high hydration requirement.

Test item

GB 175-2007 Standard

Ex-Plant Test result

Chemical analysis

Insoluble residue (%)

-

-

Loss on ignition (%)

≤5.0

3.31

SO₃ (%)

≤3.5

1.92

MgO(%)

≤5.0

4.87

Chloride (%)

≤0.06

0.049

Alkali Content (%)

-

-

Physical Properties

Fineness

Blaine permeability m²/kg

300

381

45μm Sieving residue (%)

-

-

Setting time

Initial Setting Time (min)

≥45

169

Final Setting Time (max)

≤600

251

Soundness

Expansion (mm)

≤5.0

1.3

Compressive Strength (Mpa)

3 days

≥17

25.6

28 days

≥42.5

-

Flexural Strength (Mpa)

3 days

≥3.5

5.8

28 days

≥6.5

-