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

The diagrams illustrate the process of producing

cement

and its use to manufacture concrete. In the first diagram,

cement

production begins by crushing limestone and clay into a powder using a crusher. These materials are mixed in a mixer,

then

heat is applied

while

being rotated with the use of a rotating heater. The heated product is

then

ground into a finer powder. The powder

finally

is bagged and ready to use as

cement

. The second diagram shows how

cement

is vital for the manufacturing of concrete. The process involves combining 15%

cement

, 10% water, 25% sand, and 50% gravel in a concrete mixer. Gravel refers to small stones, which are the major ingredient in

this

mixture. Once all the components are combined, the output is concrete, which is used for construction purposes. In conclusion, the first process focuses on the production of

cement

, and the second shows how

cement

is utilized

along with

other ingredients to manufacture concrete.