What is the size of this blue brick?

The size of the blue brick is 240mm by115mm by 53mm. Blue bricks are made of clay, which is the product of long-term weathering of some aluminosilicate minerals, and is named because of its strong viscosity. After firing, the blue brick appears dark blue, so it becomes a blue brick, but it has high density, good frost resistance and is not easy to deform. The firing time of blue bricks generally depends on the size of the kiln; Small kilns generally drink water for 20 days (excluding drinking water) for 5 days; The kiln takes about 30 days.

The mortar joint thickness of masonry blue brick is 8 ~ 10 mm, which is exactly four bricks 1m, eight bricks 1m, brick 16 and brick1m. The modulus is very good, so it is called "standard brick".

Clay contains iron, and when it is completely oxidized during firing, iron oxide is red, which is the most commonly used red brick. However, if the iron in clay is not completely oxidized (Fe3O4) by cooling with water during firing, it will be blue, that is, blue bricks.

Blue bricks can keep air humidity, wear resistance and corrosion resistance are excellent, and can reach the standard of non-corrosion for ten thousand years. Blue bricks give people a feeling of simplicity and elegance. They are usually used to build walls and sidewalks of houses. They are an ideal material with long service life.