Why is the use of commercial ash on the concrete floor?

The reasons for sanding on the commercial concrete floor are generally unreasonable during construction, such as:

When mixing concrete and mortar, add too much water, or stir unevenly, and sand peeling where there is too much moisture.

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

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.

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

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

Improper maintenance. The remedy method is generally the cement floor treatment agent.

As a R&D and manufacturer of concrete floor materials, Bang Wei Building Materials provides a variety of materials to harden and protect the ground.

If you just want to solve the ash phenomenon at a low cost, and never do it, and you don't want to grind and polish or do epoxy flooring, you can directly roll and brush the BW205 oil-based one-component floor penetrating curing agent or BW101 water-based sand treatment agent of [Suzhou Bangwei Building Materials] once or twice. You can construct and operate it yourself.

Special attention should be paid to many details in the decoration, especially the ground construction. Some owners who use cement floors directly are prone to sand and ash after using them for a long time. With the extension of service life and the effects of carbonization, water erosion and weathering, the floor surface will continue to be powdery, affecting normal use.

When the cement surface is rough and dry, touching the cement surface with your hands will not fall off.

When walking around, there will be loose sand grains or flakes of peeling cement crust, which is ground sanding. Some have hollow drums and small depressions when they hit the ground, which will crack under the action of gravity, seriously damaging the use function of the ground. The strength grade of the pavement or concrete floor of the industrial plant shall not be less than C20.

It should be used when determining the mix ratio of 5. The content of cement and fly ash shall not exceed 20%, and fly ash cement shall not be used. When pouring concrete floor slabs with ready-mixed concrete, the construction slump shall not be greater than 150mm.

When the ground layer is constructed with fly ash cement, the cement mortar direct plastering method shall not be used, and the dry and hard mortar shall be used for leveling, and then the surface shall be plastered and rolled with cement slurry. Since this method does not have a slurry extraction process, there will be no fly ash floating and no sand will be sprinkled on the concrete surface. There is a simple and economical solution for sanding existing concrete surfaces:

Hardening is performed with a concrete sealing curing agent, which is a lithium-based chemical hardener. It works entirely through penetrations and does not alter the appearance of the original concrete surface. Its main function is to improve the hardness and wear resistance of the surface of the frosted concrete, and the effect after treatment is permanent.

The ash and sand in the concrete may be due to watering and curing problems, resulting in a lack of water in some parts of the ground, which affects the hydration reaction process of the cement. Therefore, the ground should be maintained regularly. The maintenance time should be more than 7 days or so.

It is best to sprinkle water every day. Do not use quick-drying, let it dry naturally. It could also be that the cement itself is not up to standard and does not hydrate and cure well.

The mud content of sand is too large, which affects the cement hydration process.

Answer: concrete ground ash, sand may be related to the quality of the mixture and cement when the ground was made, the ground sanding, can be cured, curing is to first grind the ground with a polishing machine, and then sweep the ash produced after grinding, and then splash a special curing agent, from now on will not be ashed, both bright and firm.

It can be repaired, it is best to choose the right material for repair, Portland cement can be used, so that the problem can be solved very well, and you need to find a professional person to deal with it.

Choosing a better material, sprinkling water frequently, having a good grasp of the calendering time, and maintaining it in time after the completion of the project can effectively deal with related problems.

Compared with slag cement and pozzola cement, ordinary Portland cement has the characteristics of good water retention, small dry shrinkage and high early strength.

I think the best thing to do is to sweep the floor clean and re-layer the concrete.

I think this situation can be smeared again with cement mortar, so that the dust can be stopped.

Summary. Hello Use solid concrete pioneer sealing curing agent solid concrete pioneer polymer crystal repair material Clean the ground first, try to have no floating ash and no debris, pour the material on the ground, spread it out with a brush or roller to evenly coat, so that the material can fully penetrate into the inside of the ground and absorb saturation. The surface of the base should be firm and rough, no oil stains, no floating ash, and there should be no sand, hollowing, loose dust and cracks.

A small part of the glue solution is diluted with water, evenly brushed on the area to be repaired to improve the viscosity of the base layer, and after 10 minutes, the second primer is applied. In order to prevent powder precipitation, the powder should be stirred while brushing, and the next repair construction should be carried out after 10 minutes. Preparation of repair material, repair material is composed of glue and powder, stir evenly according to the ratio, use after no agglomeration, repair the damage of the thin layer of peeling and falling off the pothole, the thickness of the repair does not exceed 3mm, the repair material is filled, the surface is compacted and smoothed.

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Hello Use solid concrete pioneer sealing curing agent solid concrete pioneer polymer crystal repair lead manuscript First clean the ground, try to have no floating ash and no debris, pour the material on the ground, spread it out with a brush or roller to evenly paint, let the material fully penetrate into the inside of the ground, and absorb saturation. The surface of the base should be firm and rough, no Huai trembling oil stains, no floating ash, and there should be no sand, hollowing, floating dust, loose faults and cracks. A small part of the glue solution is diluted with water, evenly brushed on the area to be repaired to improve the viscosity of the base layer, and after 10 minutes, the second primer is applied.

In order to prevent powder precipitation, the powder should be stirred while brushing, and the next repair construction should be carried out after 10 minutes. Preparation of repair material, repair material is composed of glue and powder, stir evenly according to the ratio, use after no agglomeration, repair the damage of the thin layer of peeling and falling off the pothole, the thickness of the repair does not exceed 3mm, the repair material is filled, the surface is compacted and smoothed.

In recent years, the retro industrial style has been established in the form of scattered bends, and there are many houses, offices and shops with industrial-style décor. One of the most important aspects of industrial decoration is soil treatment.

What is the reason for the dust and sand on the ground?

1.Excessive water than ash: Mixed concrete will contain a lot of water, causing the surface of the concrete to seep out, which then reduces the surface strength of the concrete.

2.The classification of sand and gravel is unreasonable and the sludge content is high: the classification of unreasonable aggregates and sand that is too fine and sanded also causes the soil, affecting the early cement hydration and concrete coagulation.

3.Excessive vibration permeability during construction: The seepage on the concrete surface becomes faster, resulting in low resistance on the concrete surface.

4. Improper maintenance, failure to maintain in time or improper maintenance, exhibition or strong wind caused by huge loss of water on the concrete surface, the surface is not completely hydrated, resulting in less resistance.

5. Other original balance factors: the calendering is not well mastered, the concrete surface does not reach a certain strength of people's work, and the building on the concrete surface freezes at low temperature.

How to deal with dust and sand on the ground?

1.Ground Dust and SandIf the grinding area of the cement floor is small and the floating sand is small, pure cement can be used to cover the surface. Cement can be made from regular Portland cement.

2.If the ground is large in the area of cement floors, but the circumstances are not very serious, it is recommended to use a treatment agent for the professional land that is in its structure and its effect is obviously simple and boring.

3.If the ground is dusted and sand and is very severe, it is advisable to repair it, remove the original surface layer and replace it. Replacing the surface layer is equivalent to rebuilding.

Precautions during construction are also precautions for sanding on concrete floors. This is very important, so it will be listed separately.

The above content is the cause and solution of ground ash and sand, thank you**, during the whole construction period, the room temperature should be strictly controlled, so as not to have an adverse impact on the construction effect. Therefore, it is not recommended for everyone to work in winter. Because, when the room temperature is lower than 10, the glue is very easy to freeze and cannot be proportioned.

In order for the glue to melt in its natural state, temperature control is crucial.

You can get it for free

Once the cement concrete floor is dusted, it needs to be solved. What are the treatment methods for cement concrete floor ashing? PChouse will take you to find out.

1. Spray the concrete sealing curing agent on the ground at low pressure, and then use a microfiber mop or soft bristle broom to distribute the material evenly, and avoid using accumulated materials.

2. The ground will be kept in a wetted state of 15-20, and then sprayed on the porous ground and the ground that has shown the area of absorbing dry material.

3. When the material is hardened, do not use a microfiber mop or soft hair broom.

4. Without affecting the elevation of roads and buildings, add a layer of cement-based materials, such as self-leveling cement, fine stone concrete, etc. This is actually a remedy, and serious problems may require removing the original concrete and re-pouring the concrete.

5. Use thin layer materials to make up for it, such as the construction of a layer of 2 3 mm self-leveling cement, and the use of polymer modified putty scraping, epoxy and other resin materials to repair.

1. Causes of ash on concrete floors:

1. The proportion of cement, lime and water is not coordinated, which means that the proportion of water is too much in the construction process, and the sand and gravel are too much and the cement is too little, so as to cause water seepage of cement mortar, further reduce the strength of the surface of the cement floor, and lead to the problem of sand on the cement floor.

2. There are certain quality problems in cement and lime, and the use of unqualified cement or substandard lime may be caused.

3. In the later maintenance process, there is no correct maintenance and maintenance, resulting in ground sanding.

Second, the concrete ground ash treatment method:

The first type: simple construction is required, only the ground is required to be wear-resistant and sand-free, and there are no special requirements for the surface of the ground to be beautiful, impermeable, oil-resistant, etc. This kind of floor is simple and economical to deal with, and you only need to purchase "Kates Concrete Sealing Hardener" to apply it yourself.

The second type is that the ground is wear-resistant and sand-free, and the ground is also required to be smooth and bright, and easy to clean. You can choose curing construction, the second way: is the construction of epoxy floor paint, according to different requirements to design different schemes.

There are two main reasons for the ash of cement floors, one is improper maintenance, but improper production.

1. Excessive water is added to cement during production, which will cause the water-cement ratio to be too large, causing ash on the cement floor; If it is more serious, it will cause sand on the cement floor.

2. When we make cement floor, we need many matte concrete surfaces, if we don't do this, it will cause the cement floor to be not strong enough and easy to ash.

3. There is also the low quality of the cement used.

Solution: 1. First of all, we should choose high-quality cement when making cement floors, and then we should master the change of time in the manufacturing process. When calendering the concrete surface, if the time is not well grasped or calendered after final setting, it will cause the destruction of the concrete mortar layer and the cement floor sanding.

Cement floor ash post-treatment method:

1. First of all, clean up the dust on the ground, and then wash it with water, be sure to construct it every other day, and make sure that there is no obvious water on the ground.

2. Spray the ground with concrete sealing curing agent at low pressure, and then use a soft hair broom to distribute the material evenly, so that the ground can remain wet for 15-20 minutes, and finally the porous ground is sprayed again, and the saved is OK.

It's nothing more than coming and going for a few reasons:

1. The mix ratio is unreasonable, the slump is too large (that is, the so-called too thin) 2, the raw materials do not meet the requirements, such as the mud content of sand and gravel is too large, the admixture is coarse and the amount is too large 3, and the vibration is too vibrating when it is vibrating.

4. The maintenance is not in place.

5. For human reasons, such as passing the car before reaching the age.

6. No secondary plastering, etc.