how many cubic meters of cement are there in a 40 kgs. (94lbs) bag of portland cement?
The Specific Gravity of Portland Cement is 3.15 so there are 0.0127m3 of Portland cement in a 40kg bag measured as a solid. As the density of the cement in the bag is about 1506kg/m3 (allowing for the voids between the grains) the volume of a 40kg bag is about 0.0266m3