🔸🔹 Manufacturing materials 🔸🔹
The first and main difference between refractory bricks and normal bricks is their manufacturing materials. In making ordinary bricks, clay including silica, alumina, magnesium oxide, lime, iron oxide and some other alkaline materials are used. While in making refractory bricks, a special type of soil called Chinese soil is used. Another name for this soil is kaolin. This material consists of 23% silica, 73% alumina, as well as compounds of iron oxide, titanium and other metal oxides. One of the main differences between ordinary bricks and refractory bricks is their resistance to heat. Ordinary bricks can only withstand heat up to about 1200 degrees Celsius, but refractory bricks can easily withstand up to 1800 degrees Celsius. The main reason for this difference, in addition to the building and heat-resistant materials of firebrick, is its firing process. Firebrick is fired at a higher temperature to make it more resistant to fire.
🔸🔹 thermal insulation 🔸🔹
The ordinary brick has no function in terms of thermal insulation. This is the reason why it is recommended to use other insulating materials when walling with these materials. However, firebrick can largely prevent the waste of energy. The main reason for this feature is that this brick is more dense and it is baked at a higher temperature. For this reason, using firebrick as the interior facade of the building can also help reduce energy costs. >
You can easily recognize them by seeing ordinary refractory bricks. Normal bricks are yellow or ocher in color; But firebrick is produced in different colors ranging from black to white. In addition, ordinary bricks are only rectangular; But firebricks have more diverse shapes and sometimes they are produced in rocky, square and irregular rectangles.
🔸🔹 Resistance to impact and scratches 🔸🔹
The high density and baking under very high temperature has caused that refractory bricks are much more resistant than ordinary bricks. Shock and scratch resistant. While a normal brick can break by falling from a distance of two meters; Firebrick is very resistant in this sense and if produced under standard conditions, it does not even scratch the surface. For this reason, firebrick transportation is done with confidence and less damage. Moisture absorption is one of the main problems and challenges of all types of It is a building material. Ordinary brick absorbs a lot of moisture and is therefore not recommended for construction in areas with humid climates. Absorption of high humidity leads to the following disadvantages: ▪️ increasing the weight of the wall and building
▪️ freezing of the water in the brick in cold seasons and as a result of its bursting
▪️ providing suitable environment for the growth of microorganisms such as fungus and mold
▪️brick expansion and pressure on other materials and as a result, causing damage such as bursting of paint and plaster to the wall and even increasing the possibility of falling
Refractory brick but It has a completely different performance against moisture. Due to its high density, being cooked at a very high temperature and the absence of lime in its ingredients, this product is well resistant to moisture. For this reason, installing it on the facade and internal walls will also increase the life of the underlying materials. Sound insulation You must know that Houses that are built in traditional ways; They are not resistant to sound at all. The main reason that you can hear the sound of your neighbor's TV in your home is the use of materials such as ordinary bricks in the walls. Ordinary brick has a not so dense texture that easily transmits sound.
Many builders do not bother to use sound insulation materials; But it is possible to make the wall acoustic to a good extent by using refractory bricks. Refractory brick has a dense structure that performs much better than ordinary brick in terms of sound insulation. That is why many schools and studios use bricks to decorate their walls.
