What are the advantages of gypsum powder?
1, wall leveling; Gypsum powder is generally used for basic treatment in decoration, such as filling gaps, straightening the corners of yin and yang, and finding equality with putty on the walls of blank houses. Gypsum has good adhesion and is not easy to fall off. When used for wall leveling, gypsum powder is not directly used, and talcum powder is added, otherwise the construction is inconvenient.
2, making gypsum cement; Anhydrite cement or cementitious materials can be produced by adding a proper amount of activator, which is suitable for soft soil foundation reinforcement, wall painting, mechanical model, tunnel support and fiber pressure plate production.
3. Other functions; Gypsum powder can be used as the main raw material of concrete expansion agent, anti-cracking agent and self-leveling mortar, and as a composite mineralizer in the production of special cement.
4. Strong adhesion; Plastering gypsum can bond well with various wall substrates (clay brick, cement brick, aerated concrete, fly ash brick, gypsum block, cast-in-place concrete, ceiling, etc.). ). When plastering, you can plaster directly without brushing any interface agent, and you can survive once, and there will be no empty drum and cracks on the plastered wall.
5. Decorate the surface; Plastered gypsum wall is fine, smooth and ash-free, with high strength, no shrinkage, elegant appearance, no odor, no alkali return and no cracking.
6. Fire fighting performance; When the plastering thickness is 20mm, the fire resistance limit can reach more than 2 hours.
Second, does gypsum powder need to be glued?
Gypsum powder needs glue, because gypsum powder is mixed with water alone, which is not only ineffective, but also easy to crack, so an appropriate amount of glue will be added during the decoration process. Usually, the ratio of water to glue is 3: 1, which means three parts of water and one part of glue.
1. Gypsum powder should be mixed with water and white latex before use. If mixed with water alone, the effect is not good and it is easy to crack, so the decoration union adds a certain amount of white latex. Generally, the ratio of water to white latex is 3: 1, which means three parts of water and one part of white latex. When scraping the wall with gypsum powder, a small amount of gypsum powder should be mixed, because gypsum powder dries quickly and is mixed too much, so it can't be used until it is used up. And use a little to prevent waste.
2. Gypsum powder is different from ordinary putty. Gypsum powder is generally made by mixing water and glue in proportion. Usually there is more water and less glue, because gypsum powder, like cement, solidifies quickly, and non-stick water will affect its adhesion.
The above is the introduction of gypsum powder, and the preparation of gypsum powder is very important. I hope the above content will be helpful to everyone.