How to solve defective wall mortar? What should I do if the cement plastering wall is desanded and s

The mortar on the wall is defective, mainly because of uneven mixing or the incorrect ratio of cement and sand, and the cause is solved after finding it, and if the defect is not serious, then you can directly use the palm to smooth the defect; The main reason is that the amount of water in the concrete is large when mixing, and at this time, the cement plastering wall will drag sand and sand to fall off, and then it will be re-plastered.

If this happens, you can only re-treat the wall, and then choose the right mortar for decoration, if the sand is less, you can directly clean it, if you can choose the wall solid.

If this happens, only re-treat the wall and then decorate it with a suitable mortar. Less sand is cleaned directly, and more walls are fixed.

The wall can be sandered or retouched. You can decorate with some putty powder, and you can use some latex paint to paint the walls.

It is very important in the process of plastering the wall with cement, and it is important to pay attention to the reasonable ratio of cement, sand and water, so that the wall skin does not fall off.

I finally know how to deal with the sanding of the plastered wall.

On how to repair the plastering mortar wall sanding, dedusting, powdering, plastering mortar marking and other problems. Many friends encounter this kind of situation to use the repair method is still in the use of interface agent, putty glue to solve the thinking, hope to cover the sand part, or the surface of the sand to stick together, the fact is clear, this is just a symptom of the practice. This can solve the surface problem at that time, when the putty powder paint is applied to the wall, it will not be long after the surface layer will crack, peel off, and even shell and delaminate in a large area.

This is actually the reason why the base is not treated, the cement mortar base layer sand and powder, and it is completely wrong to achieve the effect of repair by covering the surface to "cover the ugly". If the shovel wall is redone, the cost will be higher, not to mention that some of the wall sand and ash are not too serious, if the shovel off and redo is very cost-effective, it will affect the quality ......of wall decoration if it is not shoveled, and the effect can not be achieved

So how to deal with the insufficient marking of wall plastering mortar and easy to remove sand and ash, which is simple, effective, convenient and fast?

There is no trace of sand, and it solves the problem of sand and gray wall marking and low wall desanding. Why does use in some cases affect the effect of sand without a trace? The main reasons are as follows:

1. Sand spraying without traces is ineffective in building materials without cement components. Such as putty powder, wall paint, marble, ceramic, glass, metal surface, etc.

2. It is difficult to determine the effect of sand-rubbing walls that have been weathered or pulverized very seriously, and that contain too many soil components in the sand rubbing or too many impurities that are not conducive to the solidification and molding of cement mortar. The cement component in the plastered wall that has been pulverized for too long may have failed, so the effect is difficult to determine; If the sand contains too many soil impurities, it will have an impact on the solidification and molding of cement mortar.

3. Where the wall is covered by putty, paint, coatings, glue, oil stains and other coverings, because the material on the surface will prevent the penetration and absorption of sand without traces (unless these coatings have been completely removed or cleaned).

4. Excessive dust on the surface of the wall, and the floating ash and floating sand are not cleaned will affect the penetration and absorption of the material and the reaction effect, which is the same as the third point, so if the wall dust or floating sand is too much before spraying construction, it needs to be cleaned up before construction. Otherwise, it will affect the sand without trace effect.

Speaking of which, I would like to explain again, if you are not at ease with this friend, you can buy a small amount of trial first, and then buy it effectively, as the saying goes, you can't be fooled if you spend a little money, once it is effective, the money saved is not a little. What's more, the cause of each wall problem is different, so it is more rational to test it in small quantities before deciding whether to buy in large quantities.

In addition, it should be noted that the amount of material is directly related to the severity of desanding of the cement mortar wall and the dryness of the wall.

It is better to ask for others than to seek yourself, the plastering mortar has a low mark, and there is no trace of sand quickly!

1. Treat the wall: clean the wall first, remove it until the wall structure is exposed, and treat it flat.

2. Brush interface agent: Then paint the interface agent on the wall, the interface agent can consolidate the base wall, and allow other substances to cover, which is convenient for the subsequent steps.

3. Repair gypsum mortar rough leveling: followed by the preliminary leveling of the wall, also called rough leveling and thick leveling.

4. Hanging net: This step of hanging net is not all walls, but targeted, mainly not Yingming and the connection of the base layer of the structure, the water and electricity slot, and the insulation wall that needs to be tiled.

5. Fine leveling: After that, do leveling again to ensure that the wall is smooth without any protrusions, otherwise the door frames, window frames, cabinets, etc. can not be tightly fitted in the later stage.

6. Polishing putty: You need to use a light to observe whether the wall is flat, and then use sandpaper and other tools to polish the putty to make the wall more uniform and smooth.

7. Brush primer: After that, brush the primer, this step can not be saved, and the primer can play a role in sealing the wall and enhancing adhesion.

8. Brush the paint and paste the wallpaper: After that, the wall is painted with latex paint or wallpaper, and the wall decoration material can be selected according to your preferences.

Before the wall decoration is painted, tiled or wallclothed, the base of the wall should be treated, and the wall will generally be leveled with cement mortar, if the wall base is not done, it is easy to have the problem of latex paint peeling off or tile hollowing, and the most likely problem of cement mortar wall is sand fallingWhat is the problem with the cement mortar plastering wall sand falling off? What to do if sand slag falls on the cement wall?Let's find out!

1. Wall sanding repair agent

At present, there are many repairing first leakage supplements on the market that are specially developed to solve the problems of cement mortar plastering wall dusting, sand and powdering, and insufficient strength. It is not an interface agent, let alone a glue or adhesive, it only needs to be sprayed on the surface layer of the cement wall to stimulate the erosion, which can cure the sand and gravel, so that it will no longer fall ash and the effect will be long-lasting.

The use of repair agent can avoid the trouble of re-scraping sand, and can save costs and facilitate construction. It's just that it can't deal with the problem of hollow drums, once there is a hollow drum, it still needs to be scraped again after local shoveling.

2. Apply interface agent or glue

If the cement wall is only slightly dusted, you can directly apply a curing agent such as interface agent or glue on the wall to seal the surface of the wall and improve the bonding effect.

However, this method can only improve the strength of the surface layer to a certain extent, and achieve the effect of hardening the wall and preventing sand and ash. If the wall is seriously dusted, or even broken with a shovel, then this method cannot be used, and the symptoms are not cured, and it is still easy to have problems in the later stage.

3. Eradicate and redo

If it is weathered and old, the hollow drum cannot be repaired, or there is a problem with the proportion of cement mortar doped with sand, etc., and the sand and sand are particularly serious on the wall, then the old mortar layer can only be removed first, and then the sand can be re-plastered to avoid the later brick hollowing or even falling off.

This is the most radical solution, but it requires a lot of manpower, material resources, money and time.

What happens to cement mortar plastering wall sand falling off? What to do if sand slag falls on the cement wall

When decorating the wall, it must be carried out in a certain way, or there will be some bad effects, if there is a situation of sand falling on the wall, the following will introduce it to youCauses and repair methods of sand stools falling off the wallWhat's there.

First, the main reasons for concrete grinding are:

Excessive water-cement ratio: Mixed concrete contains a lot of moisture, which causes the concrete surface to seep out and reduce the surface strength of the concrete.

Unreasonable classification of grit and high mud content: unreasonable aggregate and too thin soil sand will also cause soil sanding, affecting the early hydration of cement and the condensation of concrete.

Excessive vibration during construction: Increased bleeding on the concrete surface, resulting in a decrease in the strength of the concrete surface.

Improper maintenance: If it cannot be maintained for a long time or is insufficiently maintained, exposure or strong winds can cause a large amount of moisture to be lost on the surface of the concrete, and the surface will not be completely hydrated, resulting in reduced resistance.

Other reasons: the rolling time is not well controlled, the concrete surface does not reach a certain resistance, and the concrete surface freezes at low temperatures.

Second, how to repair the wall high royal brigade sand dropping.

1. Clean the loose sand on the wall first, and then use a sander to clean the hard-to-clean places. Try not to leave ashes behind; If you want to scrub with water, you should build it every two days and make sure there is no clear or excessively wet water on the walls;

2. Use low-pressure paint or spraying method to place YY-011 cement. The wall hardener material is evenly applied to the surface of the wall, so that the material penetrates into the interior and maintains the effective penetration of the material. 40 minutes to 1 hour and fill the material at any time during filtration.

Causes of sand falling on the wall and repair methodsIt should be noted that the amount of material is directly related to the porosity of the cement mortar wall. The most serious mortar surface can achieve an effect of 2-3 times.

4. After 24 hours of spraying of the material, clean the surface. If the surface is demanding, rinse the wall with plenty of clean water. An angle grinder is then used to polish the surface to a smooth surface. If it is not demanding, use sandpaper or sander for polishing after 24 hours.

That's all it saysCauses of sand falling on the wall and repair methods, you can also get some useful knowledge from it when you watch it.

You can get it for free

Wall plastering is an indispensable process for decorating a house, and if the details are not dealt with, there will inevitably be a situation where the mortar will fall into the sand, which will seriously affect the subsequent use. So what is the sand drop of the wall plastering mortar, and what details should be paid attention to in the wall plastering, do you know it? Let's take a look.

First, what is going on with the plastering mortar of the wall calendar.

1. When mixing concrete, add too much water, which reduces the strength of concrete; 2. The proportion of sand and stone is incorrect, resulting in high mud content; 3. In the process of construction, excessive vibration was carried out; 4. After the construction of the masonry wall, the necessary maintenance is not carried out, resulting in low strength.

Second, what details should be paid attention to in wall plastering.

1. Before the plastering process for the wall, it is necessary to do a specific sanitation cleaning for the wall to clean up the dust and other debris on the surface. If there are potholes on the wall, do not rush to plaster, but first level the wall, otherwise it will affect the effect of plastering, and rework will become more troublesome.

2. When the wall is cleaned, it is necessary to sprinkle a certain amount of water on the wall to keep it moist enough, so as to ensure that there will be no small problems during construction. Moreover, the sprinkling is generally to be carried out on the day before the plastering project, which can effectively prevent the wall from absorbing too much water and hollowing.

3. In order to avoid the cracking of the wall, you can choose to install the steel wire mesh at the junction between the concrete and the wall. Moreover, in the process of plastering, it is necessary to adjust according to the flatness of the wall, and ensure that the thickness of the plastering layer is more than 7mm, and paste the ash cake with a square ruler.

About the wall plastering mortar sand is going on, and what details should be paid attention to in wall plastering, I will introduce it here first, do you understand it? If the wall plastering is not handled well, it is easy to fall sand, which affects your own positive and rotten cover and is often used.