The diagram below shows the stages and equipment used in the cement-making
process, and how cement is used to produce concrete for building purposes.
Reference model:
The diagrams illustrate the way in which cement is made and how it is then
used in the process of making concrete. Overall, limestone and clay pass through
four stages before being bagged ready for use as cement which then accounts for
15% of the four materials used to produce concrete. While the process of making
cement uses a number of tools, the production of concrete requires only a
concrete mixer.
In the first stage of making cement, limestone and clay are crushed
together to form a powder. This powder is then combined in a mixer before
passing into a rotating heater which has constant heat applied at one end of the
tube. The resulting mixture is ground in order to produce cement. The final
product is afterwards put into bags ready to be used.
Regarding the second diagram, concrete consists of mainly gravel, which is
small stones, and this makes up 50% of the ingredients. The other materials used
are sand (25%), cement (15%) and water (10%). These are all poured into a
concrete mixer which continually rotates to combine the materials and ultimately
produces concrete.
For more details, please pay attention to New Oriental Network.
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