Classification of Bricks Based on Manufacturing Method
Based on the manufacturing method bricks are of the following kinds:
1. Extruded Brick: It is created by forcing clay and water into a steel dye, with a very regular shape and size, then cutting the resulting column into shorter units with wires before firing. It is used in constructions with limited budgets. It has three or four holes constituting up to 25% volume of the brick.
2. Molded Brick: It is shaped in moulds by hand rather than in a machine. Moulded bricks between 50-65mm are available instantly. Other sizes and shapes are available 6-8 weeks after the order.
3. Dry pressed Brick: It is the traditional type of brick which are made by compressing clay into moulds. It has a deep frog on one bedding surface and a shallow frog on another.