最近呢我们给几个工地调了调普通抹面砂浆，这几个工地的问题比较统一，都是抹面砂浆粘刀，我们总结了几点引起粘刀的原因，全是干货，记得点赞收藏。

　　Recently, we have adjusted ordinary plastering mortar for several construction sites. The problem with these sites is relatively uniform, which is the sticking of plastering mortar to the knife. We have summarized several reasons that cause knife sticking, all of which are dry goods. Remember to like and collect them.

　　第一，沙子级配不合理。沙子级配出现断档，本身良好的级配是细沙填充粗沙空隙，胶材浆料填充细沙空隙，一旦级配不合理，就容易造成手感重。

　　Firstly, the sand grading is unreasonable. There is a gap in sand grading, and a good grading is filled with fine sand to fill the gaps in coarse sand, and filled with adhesive slurry to fill the gaps in fine sand. Once the grading is unreasonable, it is easy to cause a heavy hand feel.

　　第二，沙子含泥量高，砂浆石粉含量高。老师傅以前抹墙的时候经常说打稠了加水，打稀了加粉，但是石粉比表面积很大，吸附的水很多，但又没有活性，这就会导致砂浆很稠，而且还没有强度，所以保持合理比例的粉料至关重要。

　　Secondly, sand has a high mud content and mortar has a high content of stone powder. When the old master used to plaster walls, he often said to add water when it was thick and powder when it was thin. However, the specific surface area of stone powder is large, and it adsorbs a lot of water, but it is not active. This can cause the mortar to be thick and weak, so it is crucial to maintain a reasonable proportion of powder.

　　第三，容重高。有些人认为引气剂百害而无一利，所以他们对引气剂极为排斥，如果不加引气剂，就会导致抹面砂浆容重高，手感重，不易批刮。其实引气剂是万金油，极低掺量就能有效改变施工手感，但要注意掺量不要太高，否则就会对强度影响太大。

　　Thirdly, high bulk density. Some people believe that air entraining agents are harmful but not beneficial, so they strongly reject them. If air entraining agents are not added, it will result in high bulk density, heavy hand feel, and difficulty in scraping the plaster mortar. In fact, the air entraining agent is a panacea, and a very low dosage can effectively change the construction feel. However, it is important to note that the dosage should not be too high, otherwise it will have a significant impact on the strength.

　　第四，纤维素醚添加量。现在是冬季，冬季施工呢，纤维素醚添加量可以适当降低，如果还按照夏季时的添加量的话，就会导致砂浆稠，粘刀，不好批刮。

　　Fourth, the amount of cellulose ether added. It's winter now, and for winter construction, the amount of cellulose ether added can be appropriately reduced. If the addition amount is still the same as in summer, it will cause the mortar to become thick, stick to the knife, and difficult to scrape.

　　以上呢就是导致抹面砂浆粘刀的主要原因，如果您也出现了相同的问题，您可以自己对照排查一下，如果还有其他问题可以随时联系我们，我们可以帮您调整。

　　The above are the main reasons for the sticking of the plastering mortar knife. If you also encounter the same problem, you can compare and check it yourself. If there are other problems, please feel free to contact us and we can help you adjust them.