The key to repairing epoxy floor cracks is to find out the causes of base cracks, to judge the types of base cracks, and to select appropriate repairing materials and processes. Cracks occur in the built epoxy floors, which are difficult to repair, equipment to be used, labor-consuming and high cost of repair. Therefore, it is particularly critical to repair the foundation before the construction of the epoxy floors. Common types of base course for floor construction are concrete floor, cement mortar floor and terrazzo floor, which have wide sources, low viscosity, good grouting ability, good diffusion ability, convenient construction, high mechanical strength, and can resist most chemical erosion encountered by concrete. Epoxy floor paint may be used in construction process. There will be cracks.
Epoxy resin is mainly used to repair cracks. Solvent-based system is the main type of floor paint. Solvent may affect the performance of other repair materials. Solvent-free epoxy resin system can be used to seal the repaired base without affecting it.环氧地坪的裂缝处理大体上分为三类
Fracture treatment of epoxy floor can be divided into three categories.
1. Construction joint treatment.
Construction joints are not real "joints", but a joint between concrete poured after exceeding initial setting time and concrete poured first according to design requirements or construction needs.
2. Treatment of temperature stress cracks.
Temperature stress cracks often occur in the construction of concrete floor. The main causes of these cracks are the excessive temperature difference between the foundation and the inside and outside of the concrete or the stress release caused by other reasons. According to the different manifestations, they can be divided into surface cracks, deep cracks and through cracks. Under certain conditions, surface cracks will develop into deep cracks and deep cracks will develop into penetrating cracks. Therefore, if cracks are not repaired in time, it will directly affect the decorative effect of epoxy floor.
3. Treatment of expansion joint.
According to the structure layout, geological conditions and construction layout, construction intensity and other transverse joints in the structure, in order to meet the requirements of structural deformation, there should be no rigid filler between joints. Because the expansion joints need to meet the stress changes of the whole building, elastic materials are needed for the treatment of expansion joints, and metal sheets are laid outside to protect them.
The above mentioned three kinds of epoxy floor anticorrosive paint cracks, expansion joints and construction joints are set artificially to meet the change of concrete stress, and temperature stress cracks occur because of the change of concrete stress.
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