Formation Processes of Construction Bricks

construction worker laying bricks

Bricks have changed constructions worldwide in the past thousands of years and continue to make an impact. This is because of their renowned durability and cost-efficiency. Innovations have changed over the years, making brick manufacturing easy, but their quality remains unchanged.

There are various forming processes that bricks undergo, which result in different characteristics. The performance of the products you get from brick suppliers in NSW largely depends on their formation. Here are some of these formation processes.

Stiff-Mud Process

Manufacturers make 90% of bricks using the stiff-mud process, sometimes called the extrusion process. In this method, 10–15% of water is mixed into clay to enhance its plasticity. The resulting tempered clay is then put into a de-airing chamber, which removes its bubbles and air holes.

This gives the clay enhanced flexibility, workability and strength. After de-airing, the clay passes through a dye where surface coatings, glazing, and texture improve the brick’s performance.

Soft-Mud Process

Also called the moulded process, the soft-mud process mixes clay with 20–30% water, the product of which is then shaped into bricks. The brick is lubricated using water or sand, thus producing water-struck or sand-struck bricks.

This is the choice method for bricks with high water content. Bricks formed using the soft-made process have an antique look.

Dry-Press Process

This method is suitable for bricks with low flexibility. The initial mixture comprises clay combined with approximately 10% water

The mixture is then pressed through steel forms under pressures of 500–1500psi by compressed and hydraulic air rams. The resultant brick is exceptionally dense and compact. Dry-pressed bricks have a smooth texture.

Though it may be difficult to ascertain your brick’s formation, your supplier can guide you. With the information above, you are now better-placed to pick the best bricks for your construction.