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 it.

The first diagram illustrates the process of

cement

Use synonyms

manufacture, and the

second

Linking Words

one

show

Change the verb form

shows

show examples

the

materials

Use synonyms

that are used

while

Linking Words

producing concrete.

It is clear that

Linking Words

there are five stages in the production of

cement

Use synonyms

, beginning with the input of raw

materials

Use synonyms

and ending with the packaging of finished products. To produce concrete, four different

materials

Use synonyms

are mixed together.

At the first stage

Linking Words

in

Change preposition

of

show examples

the

Correct article usage

apply

show examples

cement

Use synonyms

production, limestone and clay are crushed to form

powder

Add an article

a powder

show examples

.

This

Linking Words

powder later enters

into

Change preposition

apply

show examples

a mixer before passing into a rotating heater. After heating, the resulting mixture is poured onto

a

Correct article usage

the

show examples

ground, and it is processed by a grinder.

Finally

Linking Words

,

cement

Use synonyms

is produced and packaged in large bags.

Cement

Use synonyms

is one of the four raw

materials

Use synonyms

that are used in the production of concrete,

along with

Linking Words

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

cement

Use synonyms

and 10% water. All four

materials

Use synonyms

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