Grey Portland Cement 42.5

1. Additive content: conformed with TCVN 6260:2009

2. Fineness: sieve 90µm (10% max), Blaine (2800 cm²/g min)

3. Autoclave Expansion: 0.8mm max

4. Time of setting:

4.1. Initial test: 45 minutes min

4.2. Final set: 420 minutes max

5.Soundness: 10 mm max

6.Compressive strength:

6.1. After 3 days: 18 N/mm^{2 min}

6.2. After 28 days: 40 N/mm²max

7.Sulfur trioxide content: 3,5 % max

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