Heavy news! The eight advantages of plastering plaster are coming

I believe you will not be unfamiliar with the name plaster plaster. This issue of the editor will explain to you the eight advantages of plaster plaster.

First of all, let's first understand the performance characteristics of plastering plaster. The first is its workability and water retention. Plastering gypsum has very good workability and water retention, which can ensure the hydration reaction after plastering. In this way, the strength of the plaster layer will not be reduced due to its loss of water, and experiments have shown that after the plaster is hardened, the strength of the plaster layer will increase correspondingly as its moisture content decreases. The second is its good micro-swelling and adhesion. Plastering gypsum has good workability and fluidity, so that the slurry can easily penetrate into the gaps of the wall and the gaps between the unevenness and the vertical and horizontal. After the sauce is hardened, the volume expands slightly, making the plastering layer and the base layer close, and the aerated concrete and The occlusal ability between the plastering surfaces is strengthened, and the bonding strength is increased. Therefore, not only will dust fall on the ground, and the material loss will be small, but it can also ensure that the two will not dry and cause shrinkage stress and thus produce hollowing and cracking. It is his moisture removal and moisture absorption performance. Generally, after plastering plaster is hardened, the unique porous network structure inside makes it have good moisture removal and moisture absorption performance, which will facilitate the drying of the aerated concrete itself, thereby avoiding the "ink bottle" structure of the aerated concrete Cause the difference in shrinkage deformation caused by different internal moisture content.

1. There is no cracking or hollowing on the surface. The shrinkage rate of traditional cement plaster mortar is generally 0.15%, and the expansion rate of gypsum is 0.02%, which determines that the shrinkage and hollow cracking of cement plaster mortar during the hydration process is inevitable, and can only be cured by additives and curing. It is alleviated, but it is impossible to solve it. The gypsum is slightly swelling. Under normal circumstances, it is impossible to produce hollow cracking during the hydration process. Moreover, the hydration process of gypsum is very fast. The basic hydration is completed in 24 hours, so the volume is stable. Very good (this is the reason why plaster is used in large quantities to produce molds). In addition, for machine-sprayed gypsum mortar walls, repairs such as re-embedded pipes and equipment modification in the later period will not cause wall shelling and hollowing.

Second, reduce the construction load, and the early design can reduce the project cost. The bulk density of plastering plaster is 850-950kg/m3, which is only half of traditional cement plastering mortar 1800-2000/m3. For example, if a two-unit 20-story building uses plastering plaster instead of traditional cement mortar, the entire building Will reduce the load by 550 tons.

3. The bulk density of plastering gypsum is only about half of that of traditional cement plastering mortar, and the thickness of plastering gypsum mortar is generally one-third to one-half of the thickness of cement mortar, so the labor wall density of workers will be Greatly reduced, construction efficiency will also increase. In addition, the plastering gypsum brushing gypsum does not require curing after the construction, the hydration setting time is short, and the scaring process construction can be carried out after 24 hours. Using mechanical construction, each unit/shift has a workload of 400m2, which can effectively improve the quality of the construction period and avoid the large demand for labor during conventional mortar plastering construction.

Fourth, reduce transportation costs. For the same construction area, using plaster plaster instead of traditional plaster plaster cement mortar can reduce the consumption by half, and correspondingly, it will reduce the transportation cost and elevator cost by half.

5. Adjust the air humidity. When the external humidity is higher than the corresponding humidity of the plastering plaster, because the external vapor pressure is higher than its saturated vapor pressure, the internal behavior is caused to adsorb moisture, thereby delaying the increase in humidity; when the external humidity is lower than the plastering When the humidity corresponds to the gypsum, the external vapor pressure is lower than its saturated vapor pressure, which promotes the evaporation of internal water molecules. Therefore, it can play a role in regulating and controlling humidity.

Sixth, effective flame retardancy. The molecular weight of dihydrate gypsum is 172, and the molecular weight of water is 18. When a 100m2 house encounters a fire, when the temperature reaches 110℃ or higher, the dihydrate gypsum will quickly release crystal water and turn into hemihydrate gypsum and then further change to no Hydrogypsum can release 560kg of water. The water can absorb a lot of heat during the evaporation process, which can effectively prevent the rapid rise of the room temperature and improve the chance of escape.

Seven, green and environmental protection. After the gypsum is harmlessly treated, it does not contain soluble pollutants. The inorganic gel materials and additives used are all environmentally friendly products. The made light plastering gypsum does not release harmful substances such as formaldehyde and is environmentally friendly.

8. Heat insulation, energy saving, sound absorption and impact resistance. The thermal conductivity of plastering plaster is 0.17w/(m.k), so the thermal conductivity of plastering plaster is 20% of that of traditional cement plastering mortar. The thermal insulation effect can reduce the energy consumption of the building. During the setting process of plastering plaster, there are tiny voids inside, so it can attenuate sound pressure and prevent sound energy projection. It can convert sound energy into heat energy, so it has good sound insulation performance. Due to the coagulated porous structure, it can effectively absorb the impact, so it will not crack and fall off when subjected to impact.