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 the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram shows the stages for the

production

Use synonyms

of

cement

Use synonyms

and concrete. In order to produce concrete it is necessary to use

cement

Use synonyms

as an

imput

Correct your spelling

input

. For the

production

Use synonyms

of

cement

Use synonyms

,

first

Add a comma

,first

show examples

it is necessary to have limestone and clay, after that both materials are transformed to powder

due to

Linking Words

the crusher. The powder

then

Linking Words

enter

Change the verb form

enters

show examples

to

Change preposition

apply

show examples

the mixer to combine both

imputs

Correct your spelling

inputs

. Once it is mixed, heat is applied in a rotating heater and

Linking Words

finally

Add a comma

,finally

show examples

it is

grinded

Correct your spelling

ground

show examples

to eliminate impurities. After the

production

Use synonyms

process is done,

cement

Use synonyms

can be applied in bags. For

the

Correct article usage

apply

show examples

concrete

production

Use synonyms

, it is needed to combine 50% of gravel,

that

Correct pronoun usage

which

show examples

are

Correct subject-verb agreement

is

show examples

small stones, 25% of sand, 15%

cement

Use synonyms

and 10% water in a concrete mixer. Once it is correctly mixed, we have concrete.