Our company is a broker in international trading business, right now, we are looking for 30.000MT ordinary portland cement: 42.5 N OR 42.5 R - DIN EN 196 OR BSS 12/1996 OR ASTM C-150 CHEMICAL COMPOSITION :====================**SILICON DIOXIDE (SIO2) 20.8-21.5**ALUMINIUM TRIOXIDE (AL2O3)5.30**FERRIC OXIDE (FE2O3) 3.30 * CALCIUM OXIDE (CaO) 64-66 **MAGNESIUM OXIDE (MgO) 1.7-3.0 **SULPHATE (SO3) 2.70-3.0 **LOSS ON IGNITION(LOI)1.6-3.0 **DICALCIUM SILICATE (C2S) 14.2-18.2**TRICALCIUM SILICATE (C3S) 5.0-54.4 **TRICALCIUM ALUMINATE(C3A)6.0-6.8 **TRICALCIUM ALUMINO FERRIC (C4AF) 10.5-12.0PHYSICAL AND MECHANICAL PROPERTIES: ==================================**FINENESS BY BLAIN CM/G 3.25 **AUTOCLAVE EXPANSION 002**INITIAL SETTING TIME (VICAT)3:25-4:50 MINUTES **FINAL SETTING TIME(VICAT)4:54-6:00 MINUTES **COMPRESSIVE STRENGTH @ 03 DAY'S 26.5-34.2 KG/CM2 **COMPRESSIVE STRENGTH @ 07 DAYS 37.3-42.5 KG/CM2 **COMPRESSIVE STRENGTH @ 28 DAY'S 52.8-54.6 KG/CM2PACKAGING : 50Kg. bags ==========Please contact our China office