The diagram below shows the stages and equipment used in the cement-making progress, and how cement is used to produce concrete for building purposes. Summarise the information by selecting and reporting the main features, and make comparisons where relevant

The diagram shows the steps and tools used during the process of making

cement

, and how concrete for buildings is produced from

this

cement

.

Cement

is made by mixing and processing several

ingredient

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ingredients

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together and the

cement

is

then

mixed with another set of ingredients to make concrete. First,

cement

production beings with limestone and clay being crushed into powder and

then

mixed together in a mixer.

Next

, the mixed powder is heated in a special rotating heater and

then

ground into

cement

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the cement

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before being put into bags. To make concrete from

cement

, the first thing you need to do is combine the

cement

with water, sand, and gravel. The mixture is not equal, with sand and gravel making up

three quarters

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three-quarters

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of the mixture and

cement

and water accounting for the remaining

one quarter

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one-quarter

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.

This

combination is mixed together in a special rotating container called a concrete mixer to produce concrete.