What Are Bricks Made Of? How Are Bricks Made?

Brick is a single of the strongest and most sturdy creating supplies available, and individuals have been employing them for a lot more than 5,000 several years. A lot of men and women want to know what helps make bricks so tough and what substances go into their creation. Keep reading through as we look at how our ancient ancestors created them and if we nonetheless do it the identical way.

What Are Bricks Made of?

It may possibly shock you to understand that you use only a number of elements to generate a brick. The 1st bricks used only dirt and straw, but builders learned that clay heated in a kiln would develop a stronger materials. Builders continued to make bricks by hand right up until the twentieth century, and the colonies in the eventual United States started out constructing them to sell commercially in 1611. Right now, bricks are heated clay and shale blended with drinking water. These normal resources really don't generate any emissions and support make for a cleaner environment.

How Are Bricks Made?

Gather the Materials

Bulldozers and other huge machinery dig up diverse sorts of clay and shale and transportation them to a facility that crushes them up into particles about 4 inches wide.

What Are Bricks Made Of? How Are Bricks Made?
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Crush and Mix

The distinct kinds of clay are combined depending on what type of brick is to be designed and sent back for much more crushing. They will continue to be crushed until the particles are little and even.

Form Bricks

This crushed clay and shale powder will be fashioned into bricks in one particular of two methods.

What Are Bricks Made Of? How Are Bricks Made?
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Semi-dry Pressed Brick

Semi-dry bricks have 10–12% drinking water content material mixed with the powder. The powder is put into molds and pressed to type a sleek brick with sharp edges and a shallow despair on the leading surface. The sharp edge is called an occur, and the despair is known as a frog.

Extruded Brick

Extruded bricks are much more widespread than semi-dry pressed bricks, and they are made from a powder that is made up of much more drinking water. These bricks commence with clay mixed with up to 25% water, and this clay is pushed through a tube, related to that of a pasta machine, with a brick-shaped suggestion. When sufficient clay emerges from the idea to kind a brick, a wire cuts via the clay to sever it and commence the subsequent 1. These bricks start off clean, but the company can include a pattern or texture before baking them.

What Are Bricks Made Of? How Are Bricks Made?
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Dry the Bricks

Extruded bricks can take also a lot time to dry in a natural way, so producers usually include perforations to pace up the procedure. These perforations also reduce brick distortions and baking and cooling instances. These bricks then go through a drying hearth or sit in drying racks based on their moisture content material.

Since pressed bricks have significantly less h2o, makers stack them and dry them with a modest hearth.


When the bricks are dry, the company will bake them utilizing one of 3 strategies to bake the dry “green” bricks at up to 1,800 levels Fahrenheit to turn them into their completed merchandise.

What Are Bricks Made Of? How Are Bricks Made?

Down-Draught Kiln

The down-draught kiln is a rectangular area with a perforated ground and a curved ceiling. The bricks are stacked on the flooring with fires on the sides, which cause very hot gases to flow into and bake the bricks. When they are completed, the fires are extinguished and the bricks taken off.

Hoffman Kiln

The Hoffman Kiln employs a slightly various program that enables producers to fireplace the bricks constantly, so they can get rid of finished bricks and replace them with new kinds.

What Are Bricks Made Of? How Are Bricks Made?

Tunnel Kiln

The tunnel kiln is a continuous firing strategy. The bricks are pushed previous stationary fires in a method that is not that various from the conveyor-belt pizza oven identified in many pizza stores. Companies use the heat to fire the bricks and the exhaust to dry them, creating it a lot more effective than other methods.


You can make bricks from practically nothing a lot more than clay and shale combined with water. Once you kind the brick and dry it, you should bake it at an incredibly large temperature to create the finished solution. The higher temperature indicates that bricks consider a wonderful deal of vitality to create, but they have a lengthy lifespan that can final one hundred many years or a lot more, even in poor climate.

Highlighted Graphic Credit history: mariastone, Pixabay