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.

The first diagram illustrates the process of

cement

manufacture, and the

second

diagram shows the

materials

that go into the

production

of concrete.

It is clear that

there are five stages in the

production

of

cement

, beginning with the input of raw

materials

and ending with bags of the finished product. To produce concrete, four different

materials

are mixed together.

At the first stage

in the

production

of

cement

, limestone and clay are crushed to form a powder.

This

powder is

then

mixed before it passes into a rotating heater. After heating, the resulting mixture is ground, and

cement

is produced.

Finally

, the

cement

is packaged in large bags.

Cement

is one of the four raw

materials

that are used in the

production

of concrete,

along with

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

cement

and 10% water. All four

materials

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