Ordinary portland cement 42.5n Ordinary portland cement grade 42, 5n According to british standards 12/1996 or astm c-150 Chemical composition Silicon dioxide (sio2) 21.00 Aluminium oxide (a12o3) 5.30 Ferric oxide (fe2o3) 3.30 Calcium oxide (cao) 65.60 Magnesium oxide (mgo) 1.10 Sulphur trioxide (so3) 2.70 Loss of ignition (loi) 0.90 Tricalcium silicate (c3s) 60.00 Dicalcium silicate (c2s) 15.00 Tricalcium aluminate (c3a) 8.05 Tricalcium alumino ferrice (c4af) 9.76 Physical and mechanical properties Blain cm2/gr 3.250 Autoclave expantion 0.02 Initial setting time (vicat) 105 minutes Final setting time (vicat) 135 minutes Compressive strength @ 03 days 230 kg/cm2 and @ 07 days 305 kg/cm2 and @ 28 days 420 kg/cm2 Compressive strength mortar mpa (n/mmª): Strength class: 42, 5n Early strength: 2 days v 10.00 Standard 28 days strength: minimum 42, 5. Maximum 62, 5. Origin: russia, ukrania. Quantity: 100.000 mt- more 1.000.000mt Packing : 50 kg bags
