If the concrete floor is damaged, what are the repair methods for sanding

It is recommended that the damaged floor can be repaired with a professional concrete repair agent, and then hardened with a Deligu concrete sealing curing agent.

Deligu concrete sealing curing agent construction process:

1.Sanding or repairing the damaged layer of sanding.

For new floors, the ground should first be cleaned and then coarsely ground; For the old ground, if there is damage and sanding, it should be repaired with Deligu concrete repair agent and then polished.

2.Compression penetration Deligu concrete sealing and curing agent A.

After coarse grinding of the ground, the sealing penetrant material is evenly poured on the ground, soaked for 4 hours and then cleaned with water.

3.Coarse grinding of the ground.

After the material is cleaned, the ground is coarsely ground with a resin grinding disc, which is to allow the material to penetrate the inside of the concrete on the ground so that a chemical reaction can occur.

4.Pressure permeation ground curing B agent.

Concrete sealing curing agent B is soaked for 4 hours to allow the material to fully react with the concrete to form a dense and hard body.

5.Concrete resin sheet fine grinding.

The concrete sealing curing agent material is pressed deeper and the reaction is more sufficient, forming a smooth, wear-resistant, durable, compressive, sand-free, dust-free floor.

6.Polished. At this time, the hardness of the ground has been significantly improved, so in order to make the surface more bright and wear-resistant, the ground is polished to form a durable and compression-resistant wear-resistant hardened floor.

There is no good way, if it is not limited to aesthetic requirements, you can use grout, and if it is limited to aesthetics, it is best not to use a layer of concrete, and it should be thick enough.

Cement floor sand solution:The easiest way to deal with it is to use penetrant, the penetration agent is also relatively cheap, you can buy penetrant directly on the Internet, but the smell of penetrant is very large, and it will emit an unpleasant smell if you use it more.

If the cement floor is sanded, you can use the BW201 floor penetrant of Bangwei building materials to repair, the ** per square meter is about 5 yuan, and the repair method is also very simple, you only need to spray the penetrant on the cement floor, and wait until it is dry.

However, when using floor penetrant, you must remember to wear a mask, the smell of floor penetrant is very unpleasant, and it also has a certain harm to the human body, so you must remember to open the window for ventilation in the later stage, and it is best not to walk around within half a month.

Cement floor sand repair method:Clean the sandy floor, no floating ash, keep it dry (moisture can be allowed, but there must be no open water); Cracks and defects should be repaired with high-strength repair materials, and then hardened with concrete hardeners.

After at least 48 hours of construction, 2 materials are used to directly paint the ground after hardening, and it can be used once and again, which should be uniform and full, without maintenance, and can be used normally after 7 days.

Causes of sanding on cement floors:1.When concrete and mortar are mixed, excessive water is added, or the mixing is uneven, and the mortar is separated and reacted to the surface of the sand and peeling.

2.The number of calendering on the surface is not enough, the pressure is not real, and there is water separation and sanding.

3.The calendering time is not well controlled, or the calendering after the final setting, the surface layer of the mortar is damaged and the sand rises.

4.The strength grade of the cement used is too low, resulting in the failure to meet the required strength grade.

5.The gradation of sand and gravel aggregate used is too fine, resulting in the required strength grade not being achieved.

The remediation method of cement floor sand is as follows:

1. Cleaning: first remove the loose parts of the drumming, peeling, sanding, cracks and other parts, and pull the parts below 3mm and the parts with oil stains.

2. Cleaning: Sweep the floating soil and other debris on the bottom surface, and wash the mud out of the working surface and prevent backflow when scouring.

3. Wetting: After washing with water, the water should be retained on the working surface for a period of time, and the working surface should be fully moistened until there is no longer water seepage.

Causes of sanding on cement floors:

1. Material proportioning. In the construction, the material ratio is not well controlled, and the amount of cement, water and sand can not be accurate, resulting in the instability of the mortar strength, and the surface layer strength is reduced and the structure is not compact, causing the ground to sand rising.

2. The construction process asks the round Li question. The calendering time is not well controlled, early or late, resulting in the inability of the surface to form slurry, and then the strength is low. In addition, in order to facilitate the operation, some construction personnel sprinkle water to moisten and forcibly wipe the pressure, resulting in the destruction of the internal structure of the ground, the reduction of strength, and the occurrence of sand.

3. Post-maintenance problems. The later maintenance of mortar is extremely important, and the reason for a large amount of sand is that there is not enough wet water curing in the later stage, resulting in the reduction of the cement hydration effect in the mortar and the serious damage to the strength.

The above content refers to: analysis of the causes of sand on the cement slurry ground.

1. For small area of sanding, it can be repaired by pure cement slurry covering. For a relatively large area of sanding, 108 glue cement slurry can be used for repair. If the sand is severe, it is best to carry out renovation treatment, remove the original surface course, and re-lay the surface layer.

2. The construction site often uses the interface agent to mix the cement for coating and scraping, hoping to cover the sanding part, in fact, this will not achieve the expected effect, and the surface layer will crack and peel off after drying, and a large area of shelling. This is due to the fact that the base layer is not treated well, and it is completely wrong to think that the base layer is powdered, and it is completely wrong to want to achieve the effect of repair through mulching.

The problem of sanding on concrete floors is still relatively common, what is the reason for this? What should we do with sanding after it has been raised?

1. What is the cause of sanding on the concrete floor.

1. If there is a problem with the concrete ground that has just been poured, it is related to many factors, and the powder has been formed on the surface, which is generally caused by the improper configuration of cement lime ratio. Under normal circumstances, the weight of cement should generally reach about 25%, and the water-cement ratio should be exceeded, so as to achieve a certain strength. If it increases, the strength will be reduced, and if the water consumption is too much during construction, it will also lead to the problem of ash on the cement surface in the later stage.

2. The second reason is caused by improper maintenance, especially after adding water and stirring evenly, it needs to go through a stage of maintenance. If the maintenance is unreasonable, or the number of days of maintenance does not reach a certain time, the surface will evaporate rapidly, resulting in cement dehydration, and the problem of sand will appear in the later stage.

3. The third reason is that the problem of the rainforest is encountered, or it is frozen, which will also lead to sand on the cement surface in the later stage.

4. The fourth reason is that the quality of raw materials is unqualified, if the strength of cement is too low or damp, it will affect the quality of cement, and if the selected sand is too fine, when stirring, it will lead to an increase in water ratio and reduce the strength.

Second, how to deal with the sand of concrete ground.

1. First of all, we need to clean the concrete floor, and at the same time keep the ground dry and there can be no water.

2. Next, you can choose a floor penetrant to treat it and use a long-hair roller to paint. For the sand problem is not particularly serious, only need to be brushed once. If the sand problem is more serious, you need to brush twice, and the brushing must be even, and wait until the first time is dry, you can brush the second time.

3. After drying, the hardness will be improved, and the problem of surface cracking and pulverization can be solved, and there will be no dust in the later stage.

Summary: If there is a problem of sand on the ground, it is caused by many reasons, but we can choose a floor penetrant, which can effectively solve the problem of sand raising and be effectively controlled.

When pouring the cement floor, if the process is not correct or the selection of materials is not properly discussed, it may lead to the problem of sand on the cement floor in the later stage. After a long time, this phenomenon will become more and more serious, and many people will directly find the master to deal with it, in fact, there is no need to be so troublesome, teach you a few simple methods to be able to deal with it quickly.

1. Remediation method for sand on cement floor.

1. If the area is smaller, we can stir some pure cement mortar, apply it to the sanding part, and wait until it is dry to be able to use normally. However, relatively speaking, there may be some color differences, but it is no problem to use.

2. If the area is relatively large, you need to choose the yarn treatment agent on the ground, mix and dilute it with water according to a certain proportion of requirements, and then apply it to other parts, soak it for 2 or 3 hours, and then wipe the residual treatment agent to meet the requirements. At the same time, if there are conditions, the ground can also be cured and polished, which can make the ground more beautiful, and the repair effect is very good.

Second, why does the cement floor have sand?

We need to understand why the ground is sandy, so that we can effectively avoid such problems from happening again next time.

1. When deploying cement mortar, the ratio of cement and lime must be controlled, and it cannot be changed at will, otherwise too much or too little water will lead to problems. In addition, do not use fine sand, because its texture is relatively fine, and the strength does not meet the requirements.

2. During construction, we must strictly follow the steps, such as cleaning the ground in the early stage, if the ground is cracked or uneven, there will be more problems in the later stage. At the same time, it is also necessary to carry out compaction, otherwise it will affect the effect of the ground.

3. It is also necessary to carry out reasonable maintenance, and after the concrete is laid, it is necessary to water, and the ground must always be kept in a moist state.

Summary: If there is a problem of sand on the cement floor, don't worry, according to the specific problem, whether it is a large area or a small area, it can be effectively solved. You don't need to ask for a master, you can solve it at home.