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.

We have two images that present us with how

cement

and concrete are produced. We can observe that for concrete

production

we need to have

cement

in the first place because

cement

is a needed ingredient in order to obtain concrete. We can

also

see that to produce

cement

we need an entire

production

line, and it needs to be produced in a factory because there are special conditions and special equipment needed to obtain it. Meanwhile, for concrete

production

it is not mandatory to produce it in a factory, one can make concrete

also

at home, only by mixing

cement

, sand, water, and gravel together, without needing a piece of special equipment.

Also

, we can conclude that the energy used to produce

cement

is greater compared to the energy used in the case of concrete

production

.

That is

because for

cement

production

we need the crusher, the mixer, the rotating heater, heat, and the grinder. When

for

Change preposition

apply

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producing concrete, you can only mix the ingredients with a shovel or with a concrete mixer and you need energy only for the latter. In conclusion, we cannot obtain concrete without having

cement

and we can obtain concrete only by mixing a few ingredients:

cement

, water, sand, and gravel.