luyện tập writing task 1 Ielts

Question

 

The flow charts given illustrates how to produce cement and how cement is used to make concrete for construction purposes.

There are 6 stages in the first process, beginning with mixing limestone and clay to crush them into smooth powder and finishing with packing complete products by bags. Meanwhile, the process of making concrete only takes 2 steps to be in used.

Powder is next mixed before they are moved to a rotating heater to burn them at a suitable high temperature. In the following step, cement is ground by a grinder and ready for packing and using.

At the subsequent process, cement is put together with water, sand and small stones with the quantities 15%, 10%, 25% and 50% respectively. The process concludes when the mixture is then placed in a concrete mixer for rotating around many times. The concrete at that time is available for sticking bricks together or constructing.

Answer 1

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The flow charts given illustrates how to produce cement and how cement is used to make concrete for construction purposes.