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Building Materials

August 12, 2017 18:08

Fireclay brick - the size and other characteristics of the product

Regulation properties of fireclay bricks

most popular and reliable building material is brick.Probably everyone knows that it can be different: silicate, ceramic, refractory.We are in this article will go on Fireclay version of this article.

relatively lightweight refractory brick has almost no effect on its resistance to high temperatures and open flames.Weight, as well as its size depends on the brand.A relatively small weight, of course, has a positive effect on the reduced load on the foundation.

Firebrick, GOST 390-96, has a regular geometric shape, a granular basis and straw-yellow color with reddish highlights.In form it is: a straight, wedge-shaped, trapezoidal.When tapped it produces sonorous, like metal, sound, and if it is broken, it will break up into large pieces and not crumble.

principle of manufacturing refractory bricks Fireclay brick

whose properties are still in demand, used not only in industry but also in the economy.It stores well and gives off heat.It is able to withstand temperatures in 1300-1500 ° C.His strength is both the advantage and disadvantage, because the cutting of the material sometimes becomes very time-consuming process.

Refractory products are produced in much smaller quantities than, for example, ceramic, respectively, its price will be higher, but also for the construction work will need less.

Fireclay brick structure which determines its grade, produced by firing at high temperatures, a mixture of refractory powder and refractory clay.firing technology should be clearly observed.If such a brick oven overdo it covered with a vitreous film that will give it greater strength, but do not suitable for masonry stoves and fireplaces.

If, on the contrary, not doderzhat, it will actively absorb moisture and hold it at the same time it will lose its strength.Oven, fireplace, chimney, or anything else built from this material can easily fall apart.

Features of operation of fireclay bricks Fireclay brick

, the characteristics of which depend mainly on the content in its composition of aluminum oxide, not only can withstand high temperatures and their fluctuations, but is also resistant to alkaline attack and chemically aggressive environments.

firebrick Thermal conductivity depends on its porosity, and porosity - the concentration of aluminum oxide.Thus, a porous brick is heated longer, but will cool down slower.This is called the accumulating property.But at the same time, a large porosity will reduce its strength.

density refractory brick is about 1700-1900 kg / m.This value is inversely proportional to its porosity.Density determines the insulating properties and its adhesion to the solution, and the rate of water absorption.Depending on how much weight chamotte bricks, possible to roughly determine its conductive properties: the smaller the weight, the higher the heat conductivity.

Since fireclay bricks are used for the most important parts of the oven or fireplace, that the use of defective or poor quality bricks should not even think about.For construction of such ovens require a special refractory material solution, it must be sufficiently viscous.For the construction of a brick chimney pipe must have the necessary frost resistance class.In the drawings, it is usually hatched.