Concrete – cement : sand : gravel is a proportions calculator that measures perfect ratios and volumes of cement, water, sand and gravel in litres for producing concrete mix of the needed strength (mark).
The users will be able to indicate the density of the concrete mix, components humidity, porosity of sand & gravel and the requirement for smoothing down the completed structure as well as maintaining the correctness of calculation.
In case you are unaware about them, just keep the default values. Alternatively, you can choose the question symbol to work out, how the measurements will be completed.
The application is specifically developed for the builders who prepare concrete in a mixer independently.
Touch the question symbol if something is uncertain.
Go through the following link to download this useful construction app