In general, the quality problems of epoxy floor paint occur within half a year after construction. In addition to the problems of epoxy material itself, the ground condition of construction base material mainly includes unqualified concrete ground casting, improper repair treatment and improper bottom coating construction. In the process of dealing with the floor with many problems, it was found that there was a common misunderstanding among the owners that since the epoxy floor was to be made, the poor quality of the concrete-poured floor had nothing to do with it; while the poor quality of the concrete-poured floor had nothing to do with it; while the concrete constructors believed that it was not easy to receive a project, no matter what floor was to be done, it was enough to cover it. This will bring great hidden danger to the later use of epoxy floor paint. Ground condition has a great influence on the quality of the final epoxy flooring project. If the ground condition can not meet the requirements, it is difficult to do a good job of the epoxy flooring project, and in the process of using the epoxy flooring, there are often phenomena such as shelling, falling off, foaming, etc. Therefore, good base material is the premise to ensure the quality of the epoxy flooring project. Some floors do not meet the requirements of the epoxy flooring painting, so they should not be Floor decoration. 环氧地坪施工的地面要求：
Ground requirements for epoxy floor construction:
The General requirements of epoxy flooring for concrete substrates are as follows:
In addition to conforming to the national standard "Code for Acceptance and Acceptance of Construction Quality of Building Ground Engineering" (GB50209-2002), it should also comply with the national standard GB50212-2002 "Code for Construction and Acceptance of Building Anticorrosive Engineering":
Concrete should be flat and compact, and its strength should be no less than C20. The poor strength will inevitably affect the compressive, impact resistance and durability of the coating.
Ground roughness generally requires a drop of less than 2 m m in the range of 2 m (it is best to use a polisher to smooth and collect light); if the drop is large, the floor coating needs to be thickened to reduce the drop;
If the ground to be coated is in the bottom layer and the groundwater level is high, the concrete bottom layer should be waterproofed to avoid the bubbling and shelling caused by the vapor pressure caused by the rise of groundwater.
Concrete is dried for at least three weeks, and the moisture content is not higher than 8%. In the process of curing and drying, local rain and water in the area are avoided, otherwise the moisture content of local concrete will easily exceed the standard.
The strength and thickness of fine stone concrete leveling layer on floor, reinforced concrete beams and cast-in-place concrete should not be lower than C20 and 30mm.
The repair or routing of damaged concrete surface should be carried out according to the national standard GB50212, that is (1). When fine stone concrete is used for routing, the strength grade should not be less than C20, and the thickness should not be less than 30mm. (2) When the base must use cement mortar to find peacetime, a layer of concrete interface treatment agent should be coated first, and then leveled according to the design thickness. (3) Resin mortar or polymer cement mortar can be used to leveling when the above operation is not suitable in the construction process.
Detailed parts, such as the concrete around the downspout pipe and the threshold, should be level, and the edges and corners should be straight.
Large area concrete base should be cut reasonable expansion joint according to the condition of base material and left to be treated when painting the floor. In order to keep the ground beautiful, it is impossible to conceal expansion joint under partition as far as possible. When constructing Cixi epoxy floor, the joint should be left, and then the joint should be filled with elastic glue.
If the concrete base fails to meet the requirements, the floor paint coatings are shelled and peeled due to the rise of the concrete layer, the floor coatings are blistered due to the lack of waterproofing treatment or waterproofing, and the floor coatings are cracked due to the serious unevenness of the base material and the unreasonable (too thin) design of the coating, the floor construction party shall not be responsible.
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