夏季来临，天气炎热，气温越来越高，施工现场墙体干燥，在使用济南石膏粉进行墙面抹灰找平时，出现抹灰石膏因失水过快表面造成结构力差或脱粉现场!主要表现为干透之后的粉刷石膏颜色不均匀(局部发白，正常颜色应为灰色)，用手搓出现掉粉。

Summer is coming, the weather is hot, the temperature is getting higher and higher, and the walls on the construction site are dry. When using Jinan gypsum powder for wall plastering and leveling, there is a problem where the plastering gypsum loses water too quickly, resulting in poor structural strength or powder detachment on the surface! The main manifestation is uneven color of the plastering gypsum after drying (local whitening, normal color should be gray), and powder peeling occurs when rubbed by hand.

问题出现的原因有哪些？

What are the reasons for the problem?

1、墙体过于干燥，含水率低吸水性强，抹灰材料上墙后水份快速被墙体吸收。

1. The wall is too dry, with low moisture content and strong water absorption. After the plastering material is applied to the wall, the water is quickly absorbed by the wall.

2、材料批刮过薄，墙体吸收水份的同时部分水份从空气中快速挥发。

2. The material is scraped too thin, and the wall absorbs water while some of it quickly evaporates from the air.

3、搅拌不充分，没等材料充分吸足水就进行批刮，上墙之后的材料水分子不够，石膏不能充分水化反应。

3. Insufficient mixing, batch scraping without sufficient water absorption of the material, insufficient water molecules in the material after being added to the wall, and insufficient hydration reaction of the gypsum.

如何避免类似问题的发生？

How to avoid similar problems?

1、墙面找平前需进行基层检测，过于干燥的墙面要进行湿水处理，可用滚筒对墙面和顶面进行滚水。

1. Before leveling the wall, a basic level inspection is required. If the wall is too dry, wet water treatment should be carried out. A roller can be used to roll water on the wall and top surface.

2、基础墙体必须使用墙固进行界面处理，防止因为墙体疏松造成脱落现象。

2. The foundation wall must be treated with wall reinforcement for interface to prevent detachment caused by loose walls.

3、材料搅拌后不要马上上墙批刮，给材料一个吸水饱和的过程，避免添加剂没有完全溶解造成保水性不足;同时天气炎热可适当多加水把材料调稀一些。

3. After mixing the materials, do not immediately scrape them onto the wall. Give the materials a process of water absorption and saturation to avoid insufficient water retention caused by incomplete dissolution of additives; At the same time, if the weather is hot, add more water to dilute the material appropriately.

4、批刮厚度不宜过薄，避免因批刮太薄造成水份加速流失。同时抹灰石膏为含砂材料，批刮过薄砂粒不能被石膏完全包裹裸露在表面，这样更容易因受外力揉搓、打磨脱粉。建议单次批刮厚度为2~10毫米为宜。

4. The thickness of batch scraping should not be too thin to avoid accelerated water loss caused by too thin batch scraping. At the same time, plastering gypsum is made of sand containing material, and after being scraped, thin sand particles cannot be completely wrapped and exposed on the surface by gypsum, which is more likely to cause peeling due to external forces such as rubbing and polishing. It is recommended to have a single batch scraping thickness of 2-10 millimeters.

出现类似情况如何解决？

How to solve similar situations?

一旦出现脱粉情况，应该针对具体情况造成的原因进行处理，不要慌!

Once there is a powder removal situation, it should be handled according to the specific reasons caused by the situation, and do not panic!

1、轻微脱粉不是特别严重可以用喷雾器补水处理，石膏因脱水粉化二次遇水自然干透后强度仍可以上来。

1. If the slight degumming is not particularly serious, the spray can be used to replenish water, and the strength of gypsum can still come up after it is naturally dried after being dewatered and powdered for the second time.

2、可以用墙固进行界面处理，进行封闭加固处理。

2. Wall reinforcement can be used for interface treatment and sealing reinforcement.

夏季高温季节粉刷石膏施工要避免问题出现的相关事项就讲解到这里了，希望能够给您好的帮助，更多事项就来我们网站https://www.jnfhjc.com咨询！

That's all for explaining the relevant issues to avoid during the hot summer season when applying gypsum. We hope to provide you with good help. For more information, please visit our website https://www.jnfhjc.com consulting service