Clay brick class 2

Red Clay bricks are burned in a kiln which makes them durable. Modern, fired, clay bricks are formed in one of the three processes – soft mud, dry press and extruded. Normally, bricks contain the following ingredients: Silica (Sand) – 50% to 60% by weight. Clay bricks made of fired clay. The composition of clay varies over a wide range. Usually, clays are composed mainly of Silica (grains of sand), Alumina, Lime, Iron, Manganese, Sulphur, and Phosphates, in different proportions. Bricks are manufactured by grinding or crushing the clay in mills and mixing it with water to make it plastic. The plastic clay is then moulded, textured, dried, and finally fired.