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.

控制色差出现的措施。，针对相同颜色、墙面，应该保证真石漆的厂家、批号相同，并且要一次性采购重组。如果相同颜色但批号不同，就应该混匀后再进行作业。采用从上下的喷涂方式，并且以墙面分隔缝、阴阳角、水落管等作为分界线，进行分段式的喷涂作业。第二，应该积极通过培训等方式，提升施工人员的操作水平，从而保证施工中的喷涂更为均匀，形成一致的膜厚。第三，在喷涂过程中一般会因为两方面原因导致掉砂过多，主要是因为在施工中喷枪的气压过大而导致，或者是喷枪移动太快。

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，就是涂料中兑水过多，从而涂料过稀而导致沙子上墙没有足够的初黏度。因此，应该调整到合理的气压值，在喷涂的过程中掌握好喷枪移动速度，尽可能不要兑水稀释涂料。第四，在施工期间遇到雨水天气，需要完全等到墙面干燥后再施工。第五，要调色达到足够均匀。第六，在喷涂前，需要进行均匀的搅拌。

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.

裂缝的控制措施。，针对阴阳角裂缝的问题来说，因为阴阳角是两个面的交接，在真石漆干燥过程中会形成不同方向张力对阴阳角处的涂膜产生作用力，进而产生裂缝。如此需要用喷枪再覆盖住裂缝，新喷涂的阴阳角应该注意不能一次喷涂太厚，应该采用薄喷多层的方法，也就是等表面干燥后再喷一次，距离要足够远，移动的速度要快，不能垂直喷，只能采用散射的方式，让雾化的边缘扫入阴阳角；

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，如果在平面出现裂缝，一般来说都是因为温差大而导致，在内外层干燥速度产生差异，进而产生裂缝。这种情况应该用小嘴喷枪采用薄喷多层方式，控制每层干燥速度，也要保证较远的喷涂距离；，如果在成膜的过程中产生裂缝，主要是因为喷涂覆盖不均匀导致，在涂层表面成膜后出现裂缝，也有可能是多个星期后才有裂缝出现，如此就要根据具体情况进行具体分析，在施工过程中，要采用合理的盆土方法同时，要对配方进行改变和试制。

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.