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. (Cambridge 8 Test 3)

The diagram

depict

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depicts

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stages

Correct article usage

the stages

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and tools used in

cement

Correct article usage

the cement

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and concrete manufacturing process. Looking from an

overall

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perspective, it is discernible that

this

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procedure involves multiple stages, commencing with crushing

lime stone

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limestone

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and

culmunating

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culminating

with

the

Correct article usage

a

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mix of concrete.

Initially

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, limestone and clay

is

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are

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put into a material crusher to be smashed into powder before being transferred via a conveyor belt to a mixer. After being evenly mixed, the mixture undergoes a heating process in a rotating heater. Once the mixture

are

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is

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heated, it is

grinded

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ground

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into cement.

Finally

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, the product is packaged into bags and used for

further

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implications. After concrete is manufactured, it

then

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comes to concrete production.

This

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is a simple procedure with only one step, which requires 15% of cement, 10% of water, 25% of sand and 50% of gravel

is

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to be

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put into a concrete mixer. After those materials are completely mixed, concrete for building purposes is successfully made.