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.

The first diagram illustrates the process of

cement

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manufacture, and the

second

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diagram shows the

materials

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that go into the

production

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of concrete.

It is clear that

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there are five stages in the

production

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of

cement

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, beginning with the input of raw

materials

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and ending with bags of the finished product. To produce concrete, four different

materials

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are mixed together.

At the first stage

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in the

production

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of

cement

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, limestone and clay are crushed to form a powder.

This

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powder is

then

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mixed before it passes into a rotating heater. After heating, the resulting mixture is ground, and

cement

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is produced.

Finally

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, the

cement

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is packaged in large bags.

Cement

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is one of the four raw

materials

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that are used in the

production

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of concrete,

along with

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gravel, sand and water. To be exact, concrete consists of 50% gravel, 25% sand, 15%

cement

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and 10% water. All four

materials

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are blended together in a rotating machine called a concrete mixer.