What are the defects of bricks?

Defects in bricks can include cracks, warping, and discoloration, which may arise from improper firing, inadequate drying, or poor-quality raw materials. Other issues include efflorescence, where salt deposits form on the surface, and spalling, where pieces of the brick flake off. These defects can compromise the structural integrity and aesthetic value of brickwork. Proper manufacturing and quality control are essential to minimize these defects.