Question

What is the process of forming brick and structural tile by extruding stiff but plastic clay having a moisture content of 12% to 15% through a die and cutting the extrusion to length with wires before firing?

Options:

Stiff-mud process
Soft-mud process
Dry-press process
Semi-dry process

Answer 1

The stiff-mud process is used to form bricks and structural tiles by extruding clay with a moisture content of 12% to 15% through a die and cutting it with wires before firing.

Step-by-step explanation:

The process described in the question is known as the stiff-mud process. In this method, clay with a moisture content between 12% to 15% is extruded through a die to form a continuous ribbon of material, which is then cut to length using wires. This form of shaping bricks and structural tiles before they are fired in a kiln allows for the production of consistent and uniform shapes. The stiff-mud process is distinct from other methods like the soft-mud process, which uses more water and forms bricks in molds, and the dry-press process, where low-moisture content clay is pressed into molds under high pressure.