Civil Engineering Today

Manufacturing process of bricks In the process of manufacturing bricks, the following four distinct operations are involved: (1) Preparation of clay (2) Moulding (3) Drying (4) Burning.  (1) Preparation of clay -  The clay for bricks is prepared in the following order: (¡) Unsoiling (ii) Digging (iii) Cleaning (iv) Weathering (v) Blending (vi) Tempering. (i) Unsoiling - The top layer of soil, about 200 mm in depth, is taken out and thrown away. The clay in top soil is full of impurities and hence it is to be rejected for the purpose of preparing bricks. (ii) Digging - The clay is then dug out from the ground. It is spread on the levelled ground, just a little deeper than the general level of ground. The height of heaps of clay is about 600 mm to 1200 mm. (iii) Cleaning -  The clay, as obtained in the process of digging, should be cleaned of stones, pebbles, vegetable matter, etc. If these particles are in excess, the clay is to be washed and screened. Such a process natur...