Ground sanding refers to the fact that the concrete is dusty due to some reasons. No matter how it is cleaned, it will not feel clean. Then, the phenomenon of skinning and sanding will occur. In severe cases, stones will appear, which will cause great inconvenience to work and life. . Therefore, timely treatment when sand emerges from the ground will increase the life of the ground and reduce costs.

The floor experts will introduce the reasons for concrete sanding:

1. The water-cement ratio is too large: that is, the mixed concrete has a large amount of water, which causes the concrete surface to leak water and reduce the concrete surface strength.

2. The grading of sand and gravel is unreasonable and the mud content is high: The grading of aggregate is unreasonable, and the excessively fine soil and sand will also easily cause sand on the ground, which will affect the early hydration of cement and the setting of concrete.

3. Excessive vibration during the construction process: Aggravate the bleeding on the concrete surface, resulting in low concrete surface strength.

4. Improper maintenance: Failure to maintain or inadequate maintenance in time, large amounts of water on the concrete surface caused by sun exposure or strong wind, the surface is not fully hydrated, resulting in lower strength.

5. Other reasons: the calendering time is not well controlled, the concrete surface is not operated before reaching a certain strength, and the concrete surface is frozen at low temperature. The interface agent is often used on the construction site to stir the cement for scraping. It is hoped that the sand-covered part will be covered. In fact, this will not achieve the expected effect. Generally, the surface layer will crack, peel, and shell in large areas after drying. This is due to the fact that the base layer is not treated well. The base layer is powdered, and it is completely wrong to think that the effect of repair can be achieved by covering.

Ground sand treatment method:

    The concrete seal curing agent can cure the problem of sanding on the cement floor. Its main principle is that the final product of a complex chemical reaction will block and solidify the structural pores of the concrete, an increase in strength leads to an increase in surface hardness, and an increase in compactness leads to an increase in impermeability. Reduce the path of water flow, that is, reduce the intrusion of harmful substances, thereby greatly enhancing the resistance of concrete to corrosion by chemicals. Therefore, the concrete surface seal curing agent can bring a long-term sealed, strong, wear-resistant, dust-free concrete surface.

     Compounds penetrating into the concrete undergo a series of complex chemical reactions with the semi-hydrated cement, free calcium, silica and other substances contained in the concrete that has been set to produce hard substances. These compounds will eventually make the concrete surface dense. Increase the degree, thereby improving the strength, hardness, wear resistance, impermeability and other indicators of the concrete surface.

At present, there are two hotter floor paint processes on the market: economical epoxy thin coating floor and durable epoxy self-leveling floor paint.

    Epoxy self-leveling floor refers to a flat and seamless floor that is constructed by using self-leveling construction technology after directly mixing on site with epoxy, curing agent, additives, pigments, fillers and other coatings according to the specified ratio. paint. Epoxy floor paint thin coating floor refers to the floor coating with a thickness of 0.2 ~ 0.5mm formed after multiple pavements during construction. Epoxy self-leveling floor and epoxy floor paint thin coating floor belong to the same type of epoxy floor application, so these two floor paints have the properties of epoxy floor paint, such as: good cleanliness, moisture resistance , Dustproof, good surface decoration, diverse colors, integral molding, etc.

    The differences between epoxy self-leveling floor and epoxy floor paint thin coating floor are usually reflected in the following aspects. Next, compare the two floor paints to help customers choose the two seemingly Use the same floor for reference.

Epoxy self-leveling floor and epoxy thin coating floor performance and application environment introduction:

1. The construction process of epoxy self-leveling floor is roughly as follows: the concrete base is prepared to a state where the epoxy floor paint can be constructed → brush the closed primer on the concrete → brush the middle coat after the previous step is dried → after the previous step is dried Grinding and cleaning → Apply 1-2 times with self-leveling epoxy paint → use after 5 days of curing.

2. Epoxy floor paint thin coating floor construction process is roughly as follows: the concrete base is prepared to a state where the epoxy floor paint can be constructed → roller coating or trowel scraping of the primer material → after the previous step is dried Brush the putty → polish and clean after the previous step is dried → apply the topcoat for 3 days and then use it.

3. Due to the differences in construction, the integrity of epoxy self-leveling floors is higher than that of epoxy floor paint thin-painted floors, and the surface flatness is higher than that of epoxy floor thin-painted floors.

4. The thickness of epoxy floor thin coating floor is smaller than epoxy self-leveling, so its cost is lower, but its hardness and wear resistance are not as high as epoxy self-leveling, so it is mainly suitable for light industrial occasions and daily use. .