I believe that needless to say, everyone knows that the effect of using epoxy floor is seamless, so in the construction of epoxy floor, we should first deal with some expansion joints of concrete floor. 1. Epoxy resin mortar filling method, when using epoxy floor paint, filling expansion joints with rigid materials of epoxy resin, and then applying according to floor construction technology. Under the condition that the owner permits the floor to have uniform and straight expansion joints, the cutting machine can cut 2 to 5 mm wide seams in the original expansion joint position after the floor paint decoration. Leave space for concrete expansion to avoid uneven cracks on the ground in the future and reduce the occurrence of crusting along cracks in the floor coating. 2.聚氨酯弹性胶填充法，在环氧地坪涂料涂装时，先尽量将伸缩缝留着，即使覆盖，也应记录下所在的位置，然后在地坪涂装后，将伸缩缝切割修饰整齐，确保宽度在五毫米以上，建议修饰成上宽下窄的梯形状，然后清除缝内的的所有灰尘和杂物，贴缝两边贴上胶带，采用聚氨酯弹性交填充缝隙直且平直，在弹性胶半干状态撕去胶带即可。
2. Polyurethane elastomer filling method, in the epoxy floor coating, first try to retain the expansion joint, even covering, should also record the location, and then after the floor coating, the expansion joint will be cut and modified neatly to ensure that the width is more than five millimeters. It is suggested that the expansion joint be modified into a narrow ladder shape, and then the inside of the joint will be cleared. All dust and debris, both sides of the seam are covered with adhesive tape, polyurethane elastic cross-filling gap is straight and straight, and the adhesive tape can be torn off in the semi-dry state of elastic adhesive.
3. The method of gluing fiberglass cloth is that there are expansion joints on the local ground, and the method of gluing fiberglass cloth is often used to enhance the crack resistance. The construction method is: first fill the expansion joints with epoxy mortar material, then coat the bottom coating material, then glue 1-2 channels of fiberglass cloth with a width of about 10 mm, and then roll coating. Coating material, topcoat, etc. This method can not only ensure that the overall color of the ground is the same, but also resist the cracking caused by concrete shrinkage. But if the design thickness of the floor coating is too thin, it is not easy to operate, it will easily appear that the ground is higher than other places. So this method can only be used on epoxy floors of at least two millimeters or more.
4. Elastic rubber filling method, in the epoxy floor paint coating, can use elastic material to fill expansion joints, and then coating and topcoat. First check the expansion joints, for the width of more than five millimeters, the debris and dust will be cleaned up, and then with elastic rubber for filling and scraping. However, for the expansion joints less than 5 mm, because the gap is narrow and not easy to fill, it is necessary to use the trapezoidal cut to a certain width and depth, but to ensure the steam cut, and then inject elastic glue into the pipe. The concrete method is to fill the gap with glass gun. After filling the gap, scrape with spade and remove excess rubber. Elastic rubber filling needs a certain depth. The dust and other debris in the gap before filling should be clear and clean. Otherwise, it is easy to separate the elastic rubber from the concrete due to its weak adhesion.
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