Grey portland cement cem i or cem ii grade 42.5 n or r Chemical composition: Silicon dioxide (sio2) 21, 00 Aluminium oxide (al203) 5, 30 Ferric oxide (fe203) 3, 30 Calcium oxide (cao) 65, 60 Magnesium oxide (mgo) 1, 10 Sulphur oxide (so3) 2, 70 Loss of ignition (loi) 0, 90 M tricalcium silicate (c3s) 60, 00 Dicalcium silicate (c2s) 15, 00 Tricalcium aluminate (c3a) 8, 05 Tricalcium alumino ferric ( c4af) 9, 76 Physical and mechanical properties: Blain cm2/gr 3, 25 Autoclave expansion 0, 02 Initial setting time (vicat) 105 minutes Final setting time (vicat) 135 minutes Compressive strength 03 days ¡§c 230 kg/cm2 07 days ¡§c 305 kg/cm2 28 days ¡§c 420 kg/cm2 Specification: Model number grade 42.5 r/n Color grey Main raw material silicate Type silicate cement / portland cement Strength grade(mpa) 42.5 Sgs inspection at loading port on seller`s cost Standard british standards bs 12/1996, or united states standards astm c-150. Pricing quotes provided upon request and subject to daily changes Shipment 12.500 mt, 25.000 mt and 50.000 mt Minimum order quantity 12500 metric ton/metric tons Port shanhai Packaging details 50kg paper bags unless requested otherwise by buyer. Delivery time 20 days unless requested otherwise by buyer Payment terms l/c, t/t Supply ability 200000 metric ton/metric tons per month We are supplier of various kinds of constructiion materials, so any needs, pls feel free to contact . A) 2mt jumbo bag b) 50kg bag then 40 bags into a 2mt sling bag