Sementti 42,5 R
Portland sementti 42.5rSpecificationsGrey portlandsementin rakennus-grade 42,5 - rAccording British standards12/1996 tai ASTM c-150, BS EN 197-1, (gb 175-1999) Kemiallinen koostumus:Piidioksidi (sio2) 21.00Aluminium oksidi (a12o3) 5,30 Rauta oksidi (Fe2O3) 3.30Calcium (CaO) 65.60Magnesium oksidi (MgO) 1.10Sulphur (SO3) 2.70Loss syttymisvaaraa (loi) 0.90Tricalcium silikaatti (c3s) 60.00Dicalcium silikaatti (c2s) 15.00Tricalcium aluminate (C3a) 8.05Tricalcium alumino ferrice (c4af) 9.76Physical ja machenical.Blain cm2/gr 3.250Autolave expantion 0.02Initial asettamalla aika (uicat) 105 minutesFinal asettamalla aika (uicat) 135 minutesCompressive vahvuus @ 03 päivää 230kg/cm2 @ 07 päivää 305kg/cm2 @ 28 päivää 420kg / cm2
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