In the construction of epoxy floor project, the common base is concrete ground, cement mortar ground, terrazzo ground and diamond hardened ground, which are all cement-based materials. In construction, cracks often occur on the base surface, and the causes of cracks are the same on the macro level. So, what are the reasons for the cracks on the epoxy floor and how to deal with them? It can be seen that cracks in the epoxy floor will have a great impact on the surface of the epoxy floor coating. We need to take appropriate measures to solve the problem in time to ensure the beauty of the floor.
The base types commonly used in ground construction are concrete ground, cement mortar ground and terrazzo ground, which have wide sources, low viscosity, good grouting ability, strong diffusion ability, convenient construction and high mechanical strength, and can resist most chemical erosion of concrete. There may be cracks in epoxy floor during construction, but there are many reasons. This phenomenon occurs, but the control measures are basically the same. Construction joint treatment, temperature stress crack treatment and expansion joint treatment are commonly used methods.
Construction Joint Treatment of Epoxy Floor
The construction joints are not real "joints", but the joints between the concrete poured after the initial setting time and the concrete poured according to the design requirements or construction needs.
Treatment of Thermal Stress Cracks in Floor
Temperature stress cracks often occur in concrete floor construction. The main cause of these cracks is the excessive temperature difference between the foundation and concrete or the stress release caused by other reasons. According to the different performance, it can be divided into surface crack, deep crack and through crack.
Under certain conditions, surface crack develops into deep crack and deep crack develops into penetrating crack. Therefore, if cracks are not repaired in time, the decorative effect of epoxy floor will be directly affected.
Treatment of expansion joint of epoxy floor
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.
Reasons for cracks in base course
Because of some problems of concrete construction and deformation, there are many micro-pore and micro-crack in hardened concrete, which makes concrete show some heterogeneous characteristics. Commodity concrete is mostly used in the ground pouring of industrial factory buildings. The quality control of raw materials, mix proportion of concrete and the technical content of concrete mixing, transportation and pumping are relatively high, so cracks will inevitably appear in concrete.
Concrete cracks can generally be divided into expansion joints, construction joints, temperature stress cracks.
Expansion joint: Expansion joint is a transverse joint set in the structure according to the structure layout, geological conditions and construction layout, construction intensity, etc. Because expansion joints need to satisfy 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.
Construction Joints: Construction Joints refer to the joints formed between the first and second poured concrete in the process of concrete pouring because of the design requirements or construction needs to be poured in stages. The construction joint is only because the later pouring concrete exceeds the initial setting time, and there is a joint between the first pouring concrete and the later pouring concrete, which is called the construction joint. This is not a real "seam".
Temperature stress crack: The most common crack in concrete is temperature stress crack. During the construction process, the temperature difference between the foundation and the inside and outside of the concrete is too large, which leads to temperature stress cracks. According to the different manifestations of temperature stress cracks, temperature stress cracks 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. If cracks are not repaired in time, it will directly affect the decorative effect of epoxy floor. Deep cracks and through cracks of concrete under temperature stress belong to structural damage cracks. Surface repair has little effect and needs to be repaired and strengthened thoroughly from the cracked base surface. Expansion joints and construction joints are set artificially to meet the change of concrete stress. Temperature stress cracks are caused by the stress changes of concrete itself, which need to be treated in time.
标签:   环氧地坪 地坪 环氧地坪漆 环氧地坪施工 地坪施工