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

The two diagrams illustrate the steps and equipment involved in the production of

cement

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and the way in which

cement

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is used to make concrete.

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, limestone and clay pass through four stages before being bagged

ready

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and ready

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for use as

cement

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.

Cement

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is

then

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combined with three other materials to create concrete.

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the process of making

cement

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uses a number of tools, the production of concrete is simpler and requires only a concrete mixer. In the first stage of making

cement

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, limestone and clay are crushed together to form a powder.

This

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powder is

then

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passed through a mixer before being subjected to heat in a rotating heater. The resulting mixture is ground in order to produce

cement

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which is

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packed in bags ready to be used. Regarding the second diagram, concrete consists of mainly gravel which is small stones, and

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makes up 50% of the ingredients. The other materials used are sand (25%),

cement

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(15%) and water (10%). These are all poured in a concrete mixer which continually rotates to combine the materials and ultimately produce concrete.