Solid brick

A solid brick is a brick which , in contrast to perforated brick, consists entirely of the brick material. However, one generally speaks of a solid brick, provided that it consists of more than 85% of the brick material.

In the manufacture of bricks, a distinction is made between manual production and mechanical (industrial) production. The manual production of bricks is still often found in developing countries today. Clay is pressed into a molding box and then dried in the air. The dried bricks are then piled up in a heap, this is called a pile. Coal is then poured between the individual bricks . After the kiln has been covered, a burning process takes place which lasts about 14 days. After the firing process, the finished bricks are often sorted again according to different quality levels on different piles . Most bricks nowadays are made by industrial manufacturing. So-called extrusion presses are used for this purpose, which can achieve a very smooth surface on the bricks.