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 on the left illustrates how cement is manufactured, while the one on the right shows the use of that cement in the production of concrete for construction.
Overall, there are four main steps in the manufacture of cement: crushing the raw materials and mixing them, heating them, and then grinding the result into a fine powder. To make concrete, cement is mixed proportionally with other ingredients. (I used “grinding the result” instead of “grinding them” because “them” would refer to the raw materials. However, after they are heated, they are chemically changed and therefore are not raw materials anymore.)
First of all, the two raw materials, limestone and clay, are fed into a crusher which breaks them down into a powder. After being blended in a mixer, the powder is burned at high temperatures in a rotating heater. It is then ground in a grinder and the resulting fine powder is cement, which is subsequently sent for packaging.
To produce strong and durable concrete for building purposes, cement is combined in a concrete mixer with other ingredients in fixed proportions: 15% cement, 25% sand, 50% gravel, and 10% water. As the cement becomes hydrated, it binds the sand and gravel to form concrete. (Note that I used “15% cement”, not “15% of cement”. “15% of cement” means 15% of the cement, not 15% of the whole mixture.)
8 CommentsLeave A Comment
Thanks dear Lili, you are greate! but I think you just mixed a little thing, and that is the rotation of the concrete mixer. Appreciate all your great work!
Happy teachers day lilie
Wowwww, so sweet. Thank you!💜
Thanks for posting a good essay, Lilie!
Thanks for reading.💜😊
is it fine if I summarized the cement manufactured steps by saying ^ there are four main main steps in the manufacturing of cement: crushing, mixing ,heating and grinding.^ ?
Yes, that would work too.
The diagrams illustrate the process and equipment required to produce cement and then subsequently concrete.
Overall, the cement production is a liner process which consist of four main steps: crushing and mixing the raw materials, heating the mixture to strengthen it, and finally grinding while concrete production involves two steps of mixing the raw materials together and then creating concrete.
The cement’s production starts with breaking limestone and clay into small pieces and then combining them together using a mixture machinery. It is then passed through a cylindrical rotating heater where heat is supplied through the other end which further strengthens the mixture. It is then flattened out on a moving tray which passes it through a grinder, mincing the heated product and thus, a powdered residue is left called cement. At the end of this process, the cement is packed in bags ready to be used.
To produce strong and durable concrete, it requires four main raw materials wherein gravel, small stones, constitutes the half of the total proportion of raw materials and the other half is composed of cement (15%), sand (25%) and water (10%) respectively. These materials are mixed together by putting them into a revolving concrete mixer which helps in the creation of concrete.