Clay firebrick: an ancient material bearing thousands of years of architectural civilization in China.

Clay refractory brick is a kind of refractory brick with Al2O3 content of 30&? 40- aluminum silicate clay products, as an ancient material bearing the architectural civilization of the Chinese nation for thousands of years, contain profound technology and history behind them. In this paper, the characteristics and application of clay refractory brick will be discussed in depth to help readers better understand this material.

The first choice material for classic architecture

Clay refractory bricks have become the first choice for many classic buildings because of their practicality and aesthetics, such as the Mausoleum of Qin Shihuang in Shaanxi and the Great Wall of Ming and Qing Dynasties in Beijing.

Multiple advantages

Clay refractory bricks are not only affordable, but also durable, with multiple advantages such as fire prevention, heat insulation, sound insulation and moisture absorption, and are very popular in civil engineering.

Excellent thermal performance

Although clay brick belongs to weakly acidic refractory products, its alkali resistance is slightly poor, but its thermal performance is excellent, and its fire resistance is as high as 1690~ 1730℃.

The linear expansion rate is extremely low.

In the temperature range of 0~ 1000℃, the linear expansion rate of clay brick is only 0.6%~0.7%, showing excellent stability.

Shortcomings do not affect important positions.

Clay brick will produce residual shrinkage at high temperature, resulting in loose cracks in mortar joints of masonry, but this does not affect its important position in the construction field. Whether as a representative of traditional building materials or as an auxiliary material in modern buildings, clay refractory bricks have won the love and respect of the world for their unique charm and practicality.