Antebellum (Mud Brick)
VITRIFICATION & 'MUD BRICK'
Vitrification is the progressive partial fusion of a clay body as a result of a firing process. Applying a mixture of sand and shale in a wet state (mud) during extrusion, allows vitrification of both the mud and the brick to happen simultaneously, resulting in a stronger bond.
*Most plants apply sand in a dry state, which can come off later in handling and cleaning