Color difference control measures. Factors causing color difference. First, because there is not enough preparation in the preparation process of construction materials, the color difference is caused by different batches of materials; Second, the construction personnel do not have a unified technical level, so in the spraying process, the thickness will be inconsistent, and some parts will be thinner, resulting in color difference; Third, excessive sand dropping in the spraying process, resulting in uneven particles, is also an important factor leading to color difference; Fourth, if the wall starts spraying after being exposed to the rain and does not wait until it is completely dry, it is very easy to cause color difference; Fifth, mainly because there is no uniform color difference in the process of color matching; Sixth, in the process of coating storage, it is easy to have delamination or floating color on the surface, but the color difference caused by spraying without stirring evenly before spraying.

控制色差出現的措施。，針對相同顏色、墻面，應該保證真石漆的廠家、批號相同，并且要一次性采購重組。如果相同顏色但批號不同，就應該混勻后再進行作業。采用從上下的噴涂方式，并且以墻面分隔縫、陰陽角、水落管等作為分界線，進行分段式的噴涂作業。第二，應該積極通過培訓等方式，提升施工人員的操作水平，從而保證施工中的噴涂更為均勻，形成一致的膜厚。第三，在噴涂過程中一般會因為兩方面原因導致掉砂過多，主要是因為在施工中噴槍的氣壓過大而導致，或者是噴槍移動太快。

Measures to control color difference. First, for the same color and wall, we should ensure that the manufacturer and batch number of real stone paint are the same, and we should purchase and reorganize at one time. If the color is the same but the batch number is different, it should be mixed before operation. The spraying method from top to bottom is adopted, and the partition joints of the wall, internal and external corners, downspouts, etc. are used as the dividing line for segmented spraying operation. Second, we should actively improve the professional level of construction personnel through training, so as to ensure more uniform spraying in construction and form a consistent film thickness. Third, in the spraying process, too much sand will be dropped due to two reasons, mainly because the air pressure of the spray gun is too high during construction, or the spray gun moves too fast.

另外，就是涂料中兌水過多，從而涂料過稀而導致沙子上墻沒有足夠的初黏度。因此，應該調整到合理的氣壓值，在噴涂的過程中掌握好噴槍移動速度，盡可能不要兌水稀釋涂料。第四，在施工期間遇到雨水天氣，需要完全等到墻面干燥后再施工。第五，要調色達到足夠均勻。第六，在噴涂前，需要進行均勻的攪拌。

In addition, there is too much water in the coating, so the coating is too thin, resulting in insufficient initial viscosity on the sand wall. Therefore, the air pressure should be adjusted to a reasonable value, the moving speed of the spray gun should be well controlled in the spraying process, and the paint should not be diluted with water as much as possible. Fourth, in case of rainy weather during construction, it is necessary to completely wait until the wall is dry before construction. Fifth, color matching should be uniform enough. Sixth, uniform stirring is required before spraying.

裂縫的控制措施。，針對陰陽角裂縫的問題來說，因為陰陽角是兩個面的交接，在真石漆干燥過程中會形成不同方向張力對陰陽角處的涂膜產生作用力，進而產生裂縫。如此需要用噴槍再覆蓋住裂縫，新噴涂的陰陽角應該注意不能一次噴涂太厚，應該采用薄噴多層的方法，也就是等表面干燥后再噴一次，距離要足夠遠，移動的速度要快，不能垂直噴，只能采用散射的方式，讓霧化的邊緣掃入陰陽角；

Crack control measures. Firstly, for the problem of cracks in internal and external corners, because the internal and external corners are the intersection of two surfaces, tension in different directions will be formed during the drying process of real stone paint, which will exert force on the film at the internal and external corners, and then produce cracks. In this way, it is necessary to cover the cracks with a spray gun. The internal and external corners newly sprayed should not be too thick at one time. The method of thin spraying and multi-layer spraying should be adopted, that is, spray again after the surface is dry. The distance should be far enough and the moving speed should be fast. Vertical spraying is not allowed. Only scattering can be used to sweep the atomized edge into the internal and external corners;

其次，如果在平面出現裂縫，一般來說都是因為溫差大而導致，在內外層干燥速度產生差異，進而產生裂縫。這種情況應該用小嘴噴槍采用薄噴多層方式，控制每層干燥速度，也要保證較遠的噴涂距離；，如果在成膜的過程中產生裂縫，主要是因為噴涂覆蓋不均勻導致，在涂層表面成膜后出現裂縫，也有可能是多個星期后才有裂縫出現，如此就要根據具體情況進行具體分析，在施工過程中，要采用合理的盆土方法同時，要對配方進行改變和試制。

Secondly, if cracks appear in the plane, generally speaking, they are caused by the large temperature difference, resulting in the difference in the drying speed of the inner and outer layers, resulting in cracks. In this case, the small nozzle spray gun should be used, and the thin spray multi-layer method should be adopted to control the drying speed of each layer and ensure a long spraying distance; Finally, if there are cracks in the process of film formation, it is mainly caused by uneven spraying coverage, and cracks appear on the coating surface after film formation, or cracks may not appear until several weeks later. In this way, specific analysis should be carried out according to the specific situation. In the construction process, reasonable basin soil method should be adopted, and the formula should be changed and trial produced.