Sunday, 5 August 2012
Academic Writing - Model Answer (Task 1)
Once clay has been extracted with a digger it is filtered using a metal grid on a conveyor belt. There are two options available when sand and water have been added to the clay. Blocks of bricks are formed by using a wire cutter or a mould. 1 to 2 days are needed for the bricks to dry in a drying oven. A kiln heats the bricks, initially at a moderate temperature and then at a high one. Cooling is necessary in a cooling chamber for 48 to 72 hours. Finally, the bricks are packed and delivered to the building site.
All in all, clay needs to be filtered, moulded or cut, dried, heated at varying temperatures and cooled before it is used as a building material. This process takes several days to complete.