Because the epoxy floor paint is a thin coating on the concrete base, the condition of the concrete floor directly determines the quality of the epoxy floor after construction. Generally speaking, the construction of epoxy floor paint requires concrete strength above C25, requires no sand on the surface, good hardness, no sand, empty shell phenomenon. So how to deal with the phenomenon of empty shell of concrete floor? The following epoxy floor paint manufacturers will give you a detailed introduction. The treatment method of empty bulging shell on concrete base surface: 在环氧地坪漆工程中，常用的除油方法包括表面活性剂清洗法、火焰燃烧法、抛丸法等，对于环氧地坪漆基面大面积空鼓起壳，需要进行铣刨处理，吧空鼓其余全面清除，再重新用水泥砂浆或混凝土抹面。对于小面积的空鼓起壳，将空鼓处切缝或灌注环氧树脂浆料，空鼓处切割去除，重新浇注水泥砂浆或用无溶剂环氧砂浆修补。
In floor paint engineering, the commonly used degreasing methods include surfactant cleaning, flame burning, shot blasting, etc. For the large area of floor paint base surface bulging, milling treatment is needed, the rest of the bars are completely removed, and then the cement mortar or concrete surface is re-applied. For a small area of empty drum shell, the hollow drum is cut or filled with epoxy resin slurry. The hollow drum is cut and removed, and the cement mortar is re-poured or repaired with solvent-free epoxy mortar.
Preventive methods of empty heave shell on concrete base surface:
1. Attention should be paid to the construction quality of the joint layer.
(1) The bonding layer should be uniformly coated after plain cement slurry mixing. It is not suitable to use the method of sweeping cement by spraying dry cement before watering. The water cement ratio of plain cement slurry is 0.4-0.5. The plain cement slurry should be closely combined with the concrete of paving surface.
(2) Strictly follow the brush with the shop.
(3) When laying the surface layer, if the plain cement slurry has been air-dried and hardened, it should be shoveled off and re-smeared.
(4) When the bonding layer is coated on the cement slag or cement lime slag cushion, sand should be added. The proportion of sand can be determined by cement: sand is l:l. Before brushing, the loose particles on the surface should be cleaned up.
2. Strict treatment of cushion.
(1) Understanding and cleaning the floating ash, serous film and other dirt on the surface of cushion, and rinsing them. If the bottom surface is too smooth, it should be chiseled.
(2) Control the smoothness of the base and check it with a 2-meter ruler. The convexity and concavity of the base should not be greater than 10 mm, so as to ensure uniform thickness of the surface layer and prevent excessive thickness disparity.
(3) 1-2 days before the construction of the surface layer, the grass-roots should be watered and wetted carefully, so that the grass-roots has a clean, wet and rough surface.