PORTLAND GREY CEMENT (CEM I 42.5 N & CEM I 32.5 N) We are supplying ASTM C150/2007 Type I grey cement products (CEM I 42.5N & CEM I 32.5N). Moreover, we are also offering flexible and attractive delivery in 25 / 40 / 50 Kg Bags, Sling bags, Jumbo bags, Shrink Wrap, Bulk. Specifications (Meeting European Standard Specifications (EN 1-197 /2004) and American Standard Specifications (ASTM C150/2007 Type I): CEM I 42.5 N CEM I 32.5 N USES Used in all types of construction, which need high early compressive strength, such as bridges, tunnels, prefabricated floor, and precast concrete. Used in all concrete construction such as reinforced buildings, water tanks, roads, and any other building works, which are not subjected to sulphate effect. It also can be used in relevant industries of the construction, as hollow and solid blocks, tiles and railway line concrete supports MgO 1.2% 1.6% SO3 2.5% - 3% SO3 2.5% - 3% SO3 Chloride 0.02% - 0.04% Cl 0.02% - 0.04% Cl LOSS ON IGNITION 1% - 1.5 % 2% - 3% INSOLUBLE RESIDUE 0.30% - 0.5% 0.4% - 0.7% SURFACE AREA (BLAINE) 3200 - 3300 3100 - 3300 SOUNDNESS 0 - 1 mm 0 -1 mm COMPRESSIVE STRENGTH 2 DAYS 18 - 23 N/mm2 15 -19 N/mm2 7 DAYS 30 35 N/mm2 24 27 N/mm2 28 DAYS 44 48 N/mm2 34 38 N/mm2 INITIAL SETTING TIME 140 - 180 minutes 130 - 170 minutes -
