P. O 32.5\P. O 32.5R\P. O 42.5\P. O 42.5R
Items/ Indexex P. O 32.5 P. O 32.5R P. O 42.5 P. O 42.5R
National standard Internally controlled indexes National standard Internally controlled indexes National standard Internally controlled indexes National standard Internally controlled indexes
Cement MgO (%) ≤5.0 ≤4.0 ≤5.0 ≤4.0 ≤5.0 ≤4.0 ≤5.0 ≤4.0
Cement SO3 (%) ≤3.5 ≤3.0 ≤3.5 ≤3.0 ≤3.5 ≤3.0 ≤3.5 ≤3.0
Cement loss on ignition (%) ≤5.0 ≤4.0 ≤5.0 ≤4.0 ≤5.0 ≤4.0 ≤5.0 ≤4.0
Cement fineness (%) ≤10.0 ≤6.0 ≤10.0 ≤6.0 ≤10.0 ≤4.0 ≤10.0 ≤4.0
Setting time
(min) Initial setting time
≥45 ≥60 ≥45 ≥60 ≥45 ≥60 ≥45 ≥60
Final setting time
≤600 ≤300 ≤600 ≤300 ≤600 ≤270 ≤600 ≤270
Soundness qualified qualified qualified qualified qualified qualified qualified qualified
Strength
(MPa) 3-day bending strength ≥2.5 ≥3.5 ≥3.5 ≥4.0 ≥3.5 ≥4.5 ≥4.0 ≥5.0
3-day compressive strength ≥11.0 ≥19.0 ≥16.0 ≥21.0 ≥16.0 ≥25.0 ≥21.0 ≥26.0
28 -day bending strength ≥5.5 ≥6.5 ≥5.5 ≥6.5 ≥6.5 ≥7.5 ≥6.5 ≥7.5
28-day compressive strength ≥32.5 ≥38.0 ≥32.5 ≥38.0 ≥42.5 ≥50.0 ≥42.5 ≥50.0

Added: 22.05.2008 Offer viewed: 107 (hits)

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