Environmental protection brick definition:
Use fly ash, coal cinder, coal gangue, tailings, chemical slag or natural sand, sea mud, industrial waste, garbage incineration slag, etc. (one or more of the above raw materials) is a new wall material called environmental protection brick, which is the main raw material without high temperature calcination.
The difference between blue bricks and red bricks;
Red brick is made of clay, which is very important. Cement bricks are generally gray and made of cement, fly ash and slag. , and hardening, light weight.
Burning red bricks destroyed a lot of cultivated land and consumed coal. Brick factories are almost surrounded by big pits and artificial deserts. Now most cities have banned red bricks from entering the construction site and gradually eliminated them. Red brick is easy to absorb water, and brick wall is well combined with cement mortar. Cement brick, hollow block, aerated concrete block, etc. Light weight, high strength, no need to fire. It is more environmentally friendly to use fly ash as a material, which is also strongly advocated by the state. The only disadvantage of this kind of block is that it is not as good as red brick when combined with plastering mortar, which is easy to cause cracks in the wall and affect the appearance. Water should be sprayed fully during construction, and steel wire mesh can be hung on the walls of villas with high requirements, which can effectively prevent cracks.
The red brick weighs about 2 kilograms and the cement brick weighs about 2.5.
Bian Xiao reminded me that in fact, environmental protection bricks should not be used on the main wall. After all, environmental protection brick is not as good as red brick in bearing capacity. Although the technology and materials for making red bricks are not environmentally friendly, red bricks are solid. It is relatively safe when building a house, and in some decoration, red bricks are also relatively beautiful. Although the hardness of blue brick is not as good as that of red brick, it is still relatively environmentally friendly in material.
Are blue bricks really environmentally friendly?
Bian Xiao learned that some manufacturers of environmentally-friendly bricks bought the slag from garbage incineration power plants at low prices, washed and separated precious metals such as gold, silver, copper and iron directly with water without harmless treatment, and then pressed the remaining slag powder into so-called "environmentally-friendly bricks", which earned tens of thousands of yuan a day.
However, behind the benefits is great pollution to the environment.
Therefore, Bian Xiao believes that no matter what kind of products, everyone should have a pair of discerning eyes and should think carefully while seeing the advantages.