Question –
WRITING TASK 1
You should spend 20 minutes on this task.
The diagrams 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.
You should write at least 150 words.
Answer –
The first picture displays how the cement is made with the help of special apparatus, while the second image depicts the process by which concrete is produced by using cement for construction
Overall, the production of cement is a 5-stage, man-made, linear process. It begins with the crushing and then mixing of raw materials and culminates with the grinding and packaging of new cement. Moreover, making concrete is also a man-made, linear process comprising just two main stages.
Looking at the cement production, initially, limestone and clay are crushed in a crusher, and the resulting powder is then transferred to a mixer so as to mix the ingredients properly. Once mixed thoroughly, this powder is passed through a rotating heater, and after heating the powder, it is then placed on a conveyor belt of a grinder so that it can be ground into fine particles called cement. At last, this cement is packaged and transported to make concrete.
Focusing on concrete production, concrete’s composition consists of 10% water, 15% cement, half gravel and quarter sand. All of these are added in a cylindrical drum known as a concrete mixer, and it is rotated anti-clockwise until concrete is obtained.