The Concrete Mix calculator computes volume and weight of cement, sand, gravel and water requires to make a volume of concrete.
INSTRUCTIONS: Choose units and enter the following:
Concrete Mix (CMX): The calculator returns the following:
Note: Units can be automatically converted to compatible units via the pull-down menu.
The Concrete Mix equation computes the volume of cement, gravel and sand to make concrete mix based on the ratio:
It uses these ratios to compute individual volumes. It then applies the mean density of dry grave, sand and cement to compute the matching weight.
Lastly, i uses 39.375 gallons of water per cubic yard of concrete to compute the volume of water, and then 998.2 kg/m3 density of water to compute the weight of water.