How to deal with the peeling and sand on the surface of cement concrete?

What are the causes of peeling and sand on the surface of concrete? How to deal with it?

There are several reasons for this:

1. The water-cement ratio is too large.

2. The cement grade is too low, or the cement is deteriorated, such as agglomerating due to moisture.

3. The grain of sand is too fine, and the water requirement is large when mixing, which leads to an increase in the water-cement ratio and a decrease in strength.

4. The high mud content of sand affects the adhesion between cement and sand.

5. Excessive vibration during the construction process leads to an excessive water-cement ratio on the concrete surface.

6. Calendering too early or too late. Calendering is too early, cement hydration has just begun, the gel has not yet been fully formed, there is more free water, and there will be water light on the surface, which is easy to cause the surface water-cement ratio to be too large. If the calendering is too late, the cement will be finally set and hardened, which will be difficult to operate, and will destroy the already hardened surface, resulting in surface sanding.

7. Excess water leakage on the surface has not been scraped off.

8. Not sprinkled evenly or the cement sand is not mixed evenly.

9. Before the concrete is completely hardened, it is sprinkled with water for curing, resulting in an increase in the water-cement ratio on the surface of the concrete and a decrease in strength.

10. Sprinkling and curing are not timely, sun exposure or maintenance temperature is too high (such as excessive baking in winter) leads to a large amount of water loss on the concrete surface, and can not be fully hydrated.

11. Before the surface reaches a certain strength, the operation of people, objects and cars destroys the cement hard film.

12. Construction at low temperature, early surface freezing.

It can be treated with concrete sanding treatment agent (or concrete hardener, concrete sealing curing agent, etc.). Concrete floor sand treatment agent can solve the problems of concrete ground ashing, sanding, and insufficient strength. The product is a material with a unique formula, which can effectively penetrate the surface layer of concrete, and a series of complex chemical reactions occur with concrete to form a dense whole, so as to greatly improve the surface strength of concrete, to achieve the effect of no sand and no ash at all, and it is effective.

It is a problem of the quality of the concrete, and the complete solution is to shovel out and rebuild the qualified concrete beams, and this will not happen.

It can be smoothed with cement repair material, Yantai Huatong cement repair material is composed of two components, and the road surface needs to be cleaned and dried before construction and stirred evenly according to a certain proportion, and poured on the road surface with a spatula to scrape.

According to the situation, if the sand is mild, you can consider doing two coats of curing agent; If the sand is severe, you can consider grinding off or shoveling off a layer, and then scraping a normal layer on the surface.

Most of the reasons for concrete sanding are that the ratio of cement and water is not well adjusted, so the mixing ratio of cement is more important when paving the concrete floor.

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The pavement of many streets and alleys is cement pavement, and after the cement floor is used for a period of time, it is easy to have problems such as peeling, so how to deal with the peeling of the cement floor? Next, I will briefly introduce it to you.

1. The cement floor is peeled, we need to shovel all the places where the ground is peeled, and clean the ground, and try to make the ground free of floating dust and debris. Next, we apply the sealing curing agent material, and use brushes and other tools to evenly coat it on the ground; In the next step, we repair the ground, the surface of the base should be free of hollowing, cracks, floating dust and other phenomena, we will mix the polymer crystal repair material, evenly brush the place to be repaired, and then we use the repair agent to mix the cement mortar for repair, after repairing the ground, the surface is compacted and smoothed.

2. According to the experts of Qeeka Home, cement floor peeling is a relatively common cement pavement disease, which may be caused by construction, natural climate and other reasons. For example, the ratio of cement and sand is out of balance; The cement layer is too thin, and the original ground has not been specially treated; Cement destruction is not properly maintained, and so on.

3. When we carry out the construction of the cement floor, we should first clean up the base layer, if there is oil stain on the surface of the base layer, you can use the diluted caustic soda to clean it, and then rinse it with clean water. The base should be clean and smooth, without hollowing, cracks and other problems. After the base is cleaned, the cement mortar can not be painted immediately, and we need to water the wet ground the day before construction, so as not to have insufficient adhesion between the base and the cement.

4. We should also pay attention to the ratio of cement sand, which should be controlled between 1:4 and 1:5; The cement floor for home decoration is usually made of fine sand, and its proportion can be appropriately adjusted.

Only when the proportion of cement and sand is appropriately blended, it is not easy to have problems such as anti-sand and cracking. We measure the height difference at the beginning of the cement floor, and if there is a height difference on the cement floor, it is necessary to carry out the smoothing work before the cement solidifies.

Summary: Regarding what to do about the peeling of the cement floor, the fiber will be briefly introduced to you here. I hope that after reading this article, I can provide you with reference and help when dealing with cement floor peeling. After the cement floor is paved, it must be sprinkled with water and the maintenance workers are sold.

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1.Clean the floor: First of all, you should clean the ground and remove the dust, oil, stains, etc. on the ground, which can be cleaned with detergent or high-pressure water gun.

2.Repair the floor: knock off the peeled part of the ground with a hammer, then repair it with cement mortar, fill the mortar to the ground, and smooth it with a trowel.

3.Waterproofing: After the ground is repaired, a layer of waterproofing can be applied to prevent moisture from seeping into the ground and causing the ground to peel again.

4.Strengthen maintenance: After repairing the nuclear stupidity, it is necessary to strengthen the maintenance, keep the ground dry, avoid erosion by moisture, and also avoid heavy objects crushing or trampling, so as not to affect the repair effect.

1. A small part of the area is sanded.

Encounter a small area of sand, generally not a big problem, in the sand of the place to smear a layer of cement slurry, and so dry after the ground looks back to some color, as long as grinding for a period of time, the color is basically the same as the old.

2. Half of the area is sanded.

If a ground is close to the general area of sand, this kind of plastering mortar will not work, then it is necessary to use professional repair materials to treat, repair mortar and water mixing, smeared on the ground, after 3 hours of drying, you can walk around.

3. Most of the area is sanded.

Most of the area of sanding, the use of ordinary repair mortar will not work, must use universal repair mortar, specific.

Large area of ground sanding, suitable for quick repair with universal repair mortar, the method is as follows:

1) Pour the interface agent on the ground that needs to be repaired, and do a good job of base treatment.

2) Then pour the all-purpose repair mortar and throw it flat with a special tool.

3) In order to make the ground shiny, more beautiful and more durable, it is recommended to do fixed-line treatment to make the ground as bright as new.

Abstract 1: Rinse several times with a water gun to clean the surface.

2. Prepare mortar, the proportion of water and cement is best controlled at about 15%, pour it on the ground after adjustment, and then scrape it flat with a scraper.

3. Wait for about an hour or two, then put on the sealant, and do a good job of maintenance, generally 24 hours of maintenance.

How to deal with concrete surface peeling is the most scientific.

1. Rinse with a water gun several times to clean the surface. 2. Prepare mortar, the proportion of water and cement is best controlled at about 15%, pour it on the ground after adjustment, and then scrape it flat with a scraper. 3. Wait for about an hour or two, then put on the sealant, and do a good job of maintenance, generally 24 hours of maintenance.

Sealant to buy there.

There is. Is it okay to peel the floor in this way?

Summary. Hello dear, thank you for waiting, let me explain it to you, 1When the molting and sand of the concrete floor is not serious, only the surface of the mild disease problem, and the bottom layer is not harmful, the terrazzo ground electric grinder can be used to polish a part of the sanding surface to the hard and solid layer of the exposed concrete floor, so as to alleviate the sand and ash of the concrete floor.

2.For the more serious sand problems caused by the selection of raw materials or basic problems, it must be renovated and solved. To remove the entire surface layer, eliminate the floating sand, and clean it with cold water.

Before paving the overall surface layer, the surface of the chisel should be kept wet, and brush a concrete water-cement ratio of plain concrete slurry to improve the cohesiveness, and then use 1:2 concrete cement mortar to pave an overall surface layer, do a good job of plastering and maintenance, and reduce the risk of sanding on the surface of the concrete floor.

3.Apply epoxy curing agent to harden the back of the black pot. Epoxy curing agent is a kind of polysilicon water-soluble inorganic composite liquid raw material with a unique secret formula, which can reasonably penetrate into the concrete surface 3-30mm, and produce a series of complex chemical changes with the dispersed salts in the concrete, resulting in a high-density overall three-dimensional network structure.

How to deal with sand on concrete pavement.

Hello dear, thank you for waiting, let me explain it to you, 1When the molting and sanding of the concrete ground is not serious, only the surface of the mild disease problem, and the bottom layer is not harmful, the terrazzo ground electric grinder can be used to polish part of the sanding surface to the hard solid layer of the exposed concrete floor, so as to alleviate the sand and ash of the concrete on the clear ground. 2.

For the more serious sand problems caused by the selection of raw materials or basic problems, it must be renovated and solved. Before shooting, the whole surface layer should be removed, the floating sand should be eliminated, and cleaned with cold water. Before paving the overall surface layer, the surface of the chisel should be kept moist, and a concrete water-cement ratio of plain concrete slurry should be brushed to improve the cohesiveness, and then used 1:

2. The concrete cement mortar is paved with an overall surface layer, and the polishing and maintenance are done carefully to reduce the risk of sanding on the surface of the concrete floor. 3.Apply epoxy curing agent to harden the back of the black pot.

Epoxy curing agent is a kind of polysilicon water-soluble inorganic composite liquid raw material with a unique secret formula, which can reasonably penetrate into the concrete surface 3-30mm, and produce a series of complex chemical changes with the dispersed salts in the concrete, resulting in a high-density overall three-dimensional network structure.

In the family courtyard, the cement floor has a sanding phenomenon, what materials are used to deal with it, and how to deal with it.

Please wait. Hello dear, the ground has peeling, sand and spring slag, but the flatness of the ground is very good, so at this time we do not need to bury the ground after the hail part is removed to do the ground again, but can take effective measures to deal with these peeling and sanding parts. The specific method is to take the ground to brush the ground or partially remove the peeling and sanding parts to remove the bent sail.

Then apply cement mortar.