We are AMT Comunicacion based in Barcelona , Spain. We are member of Tradekey.com since July, 2008. Our business is related to Construction & Real Estate industry and we specifically deal in cement. Please find our product details below:CementGREY PORTLAND CEMENT CONSTRUCTION GRADE 42.5 N/RCHEMICAL COMPOSITION Silicon Dioxide (SiO2) 20.8 21.5 Aluminum Oxide (Al2O3) 5.30 Ferric Oxide (Fe2O3) 3.25 3.5 Calcium Oxide (CaO) 65.60 Magnesium Oxide (MgO%) 1.7 3.0 Sulphur Trioxide (SO3) 2.7 3.0 Loss Of Ignition (LOI) 1.8 3.0 Insoluble Residue % 0.1 0.7 Tricalcium Silicate (C3S%) 50.0 54.4 Dicalcium Silicate (C2S%) 14.2 18.2 Tricalcium Aluminate (C3A%) 6.0 6.8 Tricalcium Alumino Ferrice (C4AF%) 11.6 Chromium (Cr%) 2.0 Max.PHYSICAL AND MECHANICAL PROPERTIES Blain CM2/GR 3.250 Autoclave Expantion 0.02 Normal Consistency % 27.5 Initial Setting Time (Hours:Mins) 3.25 4.50 Hard Set (Hours:Mins) 4.54 6.00 Fitnes Index (CM2/GM) 2800-3040/Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.