The diagram illustrates the ways by which cement is made also, how it is then used in concrete. Overall, it is clear that limestone and clay passes through four stages before cement is ready for use. And while cement production requires several equipments, concrete making needs ones one.
Firstly, limestone and clay are crush into powder then pour into the mixer which combine them to form a powder. Thereafter, it is pass into the rotating heat. This machine has a constant supply of heat from an opposite edge. After what, the heated powder is then ground and cement is produce, bagged and ready for use.
On the other hand, gravels most numerous ingredients for concrete making accounting for 50% of the total what is required. Followed by sand which 20%. Cement make up 15%. Lastly water is 10%. However, they are all put into the concrete mixer which mixes it and eventually produce concrete. 
The diagram illustrates the ways by which  
cement
  is made
  also
, how it is then  
used
 in concrete.  
Overall
, it is  
clear
 that limestone and clay passes through four stages  
before
  cement
 is ready for  
use
. And while  
cement
 production requires several equipments, concrete making needs  
ones
 one. 
Firstly
, limestone and clay are crush into powder then pour into the mixer which combine them to form a powder. Thereafter, it is pass into the rotating heat. This machine has a constant supply of heat from an opposite edge. After what, the heated powder is then ground and  
cement
 is produce, bagged and ready for  
use
. 
On the other hand
, gravels most numerous ingredients for concrete making accounting for 50% of the total what  
is required
. Followed by sand which 20%.  
Cement
  make
 up 15%.  
Lastly
 water is 10%.  
However
, they are all put into the concrete mixer which mixes it and  
eventually
 produce concrete.