The value you are stating is the relative density in tonnes. The discharge hole of the funnel has 8 mm diameter. Water Cement ratio of different grade of Concrete – Table Normally, we used the water-cement ratio falls under 0.4 to 0.6 per IS Code 10262(2009) for nominal mix i.e. = 0.28 x 1440 = 403.2 kg. In kg= 1/7×1.54×1440 (density of cement)=316.8 kg In bag =we know that one bag of cement weight is 50kg then 3.16.8 kg contain 316.8/50=6.336 say 7 bags of cement. Benefits, Tips & … More Posts:How To Calculate Cement Bags In 1 Cubic MeterBulk Density Of BricksField Density Test Of Soil By Sand Cone MethodHow […] density of cement, Portland is equal to 1 506 kg/m³. These values for density of some common building materials were collected from sites across the Internet and are generally in agreement with multiple sites. Where V cem = volume of cement (m 3) = Cement content (kg/m 3) / 3150 V water = volume of water (m 3) = Water content (kg/m 3) / 1000 V air = volume of air as per step 4. Advantages & disadvantages of Plaster of Paris. The mass of cement from step 5, in kilogrammes per cubic metre (lb/yd 3), is divided by the absolute density, also in kilogrammes per cubic metre (lb/yd 3) (normally taken as 3150 kg/m 3 = 3.15 kg/L = 5311 lb/yd 3) to give the volume in cubic metres per cubic metre (cubic yards per cubic yard) of concrete. We Know in one bag of cement = 1.226 CFT.