Why do some diatom mud lose powder, fade and become discolored?

With the continuous development of diatom mud, two types of phenomena have gradually emerged. One group believes that diatom mud is better when it has a hard texture, does not shed powder, and does not lose color. The other group thinks that diatom mud is a good material because it has a soft texture.
The editor would like to suggest that diatom mud itself is a weakly alkaline material. Compared with wallpaper latex paint, it is more in line with the physiological structure of the human body. The raw material of diatom mud is diatomaceous earth, which has the texture of earth and should be soft to the touch. Generally, laymen do not understand this material. The editor will briefly tell you how to distinguish it
If diatom mud If the powder is falling off or the color is more serious, it should be a problem with the manufacturer's ratio. If the manufacturer's formula is correct, the powder will not appear on a large wall when touched by hand. The problem of powder loss also depends on where the problem occurs. Where, because the construction effect of diatom mud has a lot to do with the base layer, poor base material will directly affect the construction of diatom mud.
Diatom mud is a soft material. You can pick it off with your fingernails even without spraying water. If you can’t pull it off even if you pick it hard, that’s because a lot of chemical raw materials are added to the material.
The loss of diatom mud powder is also related to the thickness of the diatom mud wall. Diatom mud is a textured material, and a certain thickness must be ensured during construction. At present, many manufacturers artificially add gray calcium lime. This material can improve the hardness of diatom mud, but it also brings many problems. The most obvious ones are corrosion and strong alkalinity. Although gray calcium itself is considered an environmentally friendly material, diatom mud is added with gray calcium, and its water absorption and humidity control capabilities are much worse than those of weakly alkaline diatom mud.
In addition, highly alkaline diatom mud will change color and fade over time, and it will look older after a few years. You can also look at the color card when choosing diatom mud. Diatom mud is matte in color, very natural and very plain. Those with too bright and bright colors are not regular diatom mud.