What are the constituents of good brick earth?

Good brick earth typically consists of a balanced mixture of clay, silt, and sand. The clay provides plasticity and strength, enabling the bricks to be shaped and hold together when fired. Silt improves workability and helps in achieving a smooth finish, while sand prevents shrinkage and cracking during drying and firing. The optimal composition ensures durability, uniformity, and ease of use in brick-making.