The diagram below shows the stages and equipement used in the cement-making process and how cement is used to produce concrete for building purposes.

The diagram below shows the stages and equipement used in the cement-making process and how cement is used to produce concrete for building purposes.
The diagrams illustrate the different steps and tools used in producing
cement
and how it is used in the creation of  concrete used for construction.  The
cement
production is divided into four consecutive stages. Limestone and clay are simultaneously crushed into powder
that is
directly sent through a mixer for an equal distribution . The mixture is
then
exposed to a direct source of heat applied
at the end
of the tunnel of the rotating heater. The heated powder is now ready to be grinded into
cement
which is stored in bags. 
This
cement
is afterwards used in the process of making concrete for the purpose of building. A large vessel is an essential tool in mixing four ingredients to produce concrete. Half of the mix is made of gravel, which are small stones added by their turns to sand,
cement
and water in these exact percentages respectively 25%, 15% and 10%. The container will rotate continuously to ultimately get the final concrete byproduct.
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Vocabulary: Replace the words cement with synonyms.
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