- Commodity: Cement. - Origin: China. - Specification: Grey Portland cement for construction grade 42. 5, according to British Standers. 12 / 1996 or ASTM C-150. Chemical compositions: - Silicon Dioxide (SIO2) 21. 00 - Aluminum Oxide (Al2O3) 05. 50 - Ferric Oxide (Fe2O3) 03. 30 - Calcium Oxide (CaO) 65. 60 - Magnesium Oxide (MgO) 01. 40 - Sulfur trioxide (SO3) 02. 70 - Loss of Ignition (LOT) 01. 40 - Tricalcium Silicate (C3S) 60. 00 - Dicalcuim Aluminate (C2S) 15. 00 - Tricalcium Aluminate (C3A) 08. 05 - Tricalcium Alumino Ferrice (C4AF) 09. 76 Physical and Mechanical Proprties: - Blain CM2 / GR 3. 250 - Autoclave expansition 0. 02 - Intial setting Time (VICAT) 105 minutes Compressive strength: @ 03 days 230 KG / cm2 @ 07 days 305 KG / cm2 @ 28 days 420 KG / cm2 The cement will be packed and shipped in new polypropyelen bags outer and polyethylen inner bags of 50Kg net, with 2% bags provided free of charges. Each bag shall be secured by tape to insure the saftey of the commidety during ocean transport, bags shall be marked with black characters. The inspection of goods for weight, quantity and specification will be at the port of loading with expense for sellers account.