刷石膏粉怎么避免开裂？

　　How to avoid cracking when brushing gypsum powder?

　　抹灰也叫抹面膏，不仅和易性好，附着力强，而且硬化快，具有防火、轻质、保温、隔热等特点，所以现在在建筑中被广泛使用。但也有大师被膏药开裂困扰。今天，我们来谈谈如何处理这类问题。

　　Plastering, also known as plastering paste, not only has good workability and strong adhesion, but also hardens quickly. It has the characteristics of fire resistance, lightweight, insulation, and thermal insulation, so it is widely used in construction now. But there are also masters who are troubled by the cracking of the plaster. Today, let's talk about how to deal with such issues.

　　首先，我们来看看石膏开裂的原因:

　　Firstly, let's take a look at the reasons for gypsum cracking:

　　由于混凝土吸水速度慢，抹灰层与墙面粘结时有水分，造成抹灰面空鼓开裂。有的师傅在施工时会在加气混凝土墙面上涂一层界面剂，从而解决粘结问题，但还是解决不了开裂的现象。

　　Due to the slow water absorption rate of concrete, there is moisture when the plaster layer is bonded to the wall, causing hollowing and cracking of the plaster surface. Some craftsmen apply a layer of interface agent on the aerated concrete wall during construction to solve the bonding problem, but it still cannot solve the cracking phenomenon.

　　而且如果抹灰前基层清理不干净，也会造成空鼓、开裂。另外还有一些原因，如抹灰前未浇水，每层抹灰抹灰过厚，抹灰与抹灰间隔过短，混凝土表面松散物抹灰未处理，影响抹灰抹灰与墙面的附着力，抹灰后加气混凝土表面未清理、浇水、养护等。，都会造成抹灰空鼓、开裂等问题。

　　Moreover, if the base layer is not cleaned thoroughly before plastering, it can also cause hollowing and cracking. There are also some reasons, such as not watering before plastering, each layer of plastering being too thick, the interval between plastering and plastering being too short, loose materials on the concrete surface not being treated before plastering, affecting the adhesion between plastering and the wall, and the aerated concrete surface not being cleaned, watered, and cured after plastering. All of these can cause problems such as hollowing and cracking in plastering.

　　那么，如何避免抹灰开裂呢？

　　So, how to avoid plaster cracking?

　　01材料使用中的注意事项

　　01 Precautions for Material Use

　　石膏是一种气硬性材料，不能长期与水接触使用。配制好的抹灰浆应在初凝前用完。如果浆料已经初凝，不能用水搅拌，就要报废。加水搅拌会导致粉化，没有力量，空鼓。因此，在使用中，要注意控制抹灰浆的用量。另外，抹灰时要注意不能混合其他水泥砂浆和石灰砂浆。

　　Gypsum is a gas hardening material that cannot be used in long-term contact with water. The prepared plastering slurry should be used up before initial setting. If the slurry has already set and cannot be stirred with water, it should be scrapped. Mixing water can cause pulverization, lack of strength, and hollowing. Therefore, in use, attention should be paid to controlling the amount of mortar used. In addition, attention should be paid to not mixing other cement mortar and lime mortar when plastering.

　　02施工中的注意事项

　　02 Precautions during Construction

　　抹灰石膏施工前，须清理浮灰、油渍、松散颗粒等。并保证抹灰石膏与基面粘结良好，防止空鼓现象。

　　Before plastering gypsum construction, floating ash, oil stains, loose particles, etc. must be cleaned. And ensure that the plaster is well bonded to the base surface to prevent hollowing.

　　基层吸收抹灰浆中的水分也会造成抹灰开裂。因此，在施工过程中，要根据基层材料、施工环境、气温的差异，适当均匀洒水，保证基层湿度达到施工要求后，再进行抹灰。抹灰时，应保证墙面基层无清水。

　　The absorption of moisture in the plaster slurry by the base layer can also cause cracking of the plaster. Therefore, during the construction process, it is necessary to sprinkle water evenly according to the differences in base materials, construction environment, and temperature to ensure that the base humidity meets the construction requirements before plastering. When plastering, it should be ensured that there is no clear water on the base layer of the wall.

　　另外，要注意抹灰石膏的施工温度，根据温度配制抹灰石膏浆时要注意粉水比。

　　In addition, attention should be paid to the construction temperature of plastering gypsum, and the powder water ratio should be taken into account when preparing plastering gypsum slurry according to the temperature.

　　本文由  济南石膏粉  奉献.更多有关的知识请点击  https://www.jnfhjc.com/   真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

　　This article is contributed by Jinan gypsum powder For more related knowledge, please click https://www.jnfhjc.com/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.