The diagrams below show the stages and equipment used in the cement-making process, and how cement is used to produce concrete for building purposes. Summarise the information by selecting and reporting the main features, and make comparison where relevant.

The diagram illustrates the steps involved in

cement

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production, and how

cement

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is

then

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used to manufacture concrete for construction.

Overall

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, in order to make

cement

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, the creation process consists of 7 different stages and two raw ingredients.

Also

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, for concrete production, four types of raw materials and a concrete

mixer

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.

According to

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the first figure, clay and limestone are crushed into a powder, which is

then

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combined in a

mixer

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.

This

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powder is passed through a rotating heater before being ground into

cement

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. The final product is put into bags ready for use.

It is clear that

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to produce concrete, the

cement

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is added to a large machine known as a concrete

mixer

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along with

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three other ingredients. Gravel, or small stones, accounts for half the mixture,

while

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the remaining ingredients are sand (25%),

cement

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(15%), and water (10%). The

mixer

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rotates to combine these materials, ultimately producing concrete.