There are cracks in the rural brick concrete load bearing wall, what causes it?

Personally, I think there are no more than two reasons.

Ground bearing capacityinsufficient, resulting in uneven settlement of the foundation.

Many people who build their own houses in rural areas do not pay enough attention to the foundation, and their ideology is still stuck in the simple infrastructure of self-built houses in the past. At present, the self-built houses in rural areas are all reinforced concrete structures.

The building can no longer treat the current foundation with the old vision of the past, so the phenomenon of foundation problems in rural self-built houses is relatively common.

Once the bearing capacity of the foundation is insufficient or uneven, resulting in abnormal sinking of individual foundation positions, it will lead to uneven settlement of the foundation, and the load-bearing wall made of rigid materials such as red bricks.

If the resistance to retraction and tension is insufficient, cracking will occur. Therefore, the uneven settlement of the foundation is a brick-concrete structure.

The root cause of cracks in heavy walls.

2. The ring beam is not set up enough, and it lacks the ability to cope with the uneven settlement of the foundation.

In some building codes, there are indeed some cases where it is not necessary to have ring beams on each floor, but only ground ring beams.

And the top layer of the ring beam is fine, but these requirements are on the premise that there is no problem with the foundation, and if this premise is lost, then it will become a joke not to set up the ring beam.

In the brick-concrete structure, the function of the ring beam is not only to strengthen the overall strength of the brick wall, but also to prevent the wall from cracking when the foundation is unevenly settled, which means that it can reduce the destructive force brought by the uneven settlement of the foundation to the wall. Therefore, the ring beam is not enough, which is also an important reason for the cracking of the wall.

In general, the direct cause of the cracking of the load-bearing wall in the rural self-built houses with brick-concrete structure is the uneven settlement of the foundation, and the insufficient setting of the ring beam leads to the lack of the ability of the self-built houses to cope with the uneven settlement of the foundation. The combination of the two reasons will directly lead to cracks in the load-bearing wall, so when we build our own house, we not only need to make the foundation as strong as possible, but also should set up ring beams on each floor to ensure that the load-bearing wall will not have any problems.

It should be that the stiffness of the wall is not enough. Sometimes the bearing capacity of the foundation is insufficient, and settlement will occur, which will eventually lead to cracks.

Answer: there are cracks in the brick-concrete load-bearing wall, it should be that the footing is not built well, it may be that the footing is not dug to the ground to start building the wall, and it may be that the footing and the footing are not built with reinforced concrete between the ring beam, if the footing is dug to the ground, dug to the tight ground, and the ring beam is built, the wall will generally not crack.

It may be that the foundation is sinking, the ratio of cement to soil is not right, the construction operation is improper, there is too much rain or the viscosity of the soil has changed, which will lead to cracks in the load-bearing wall.

There are cracks in the rural brick-concrete load-bearing wall, which is caused by the uneven combination of various raw materials and the improper proportion during construction.

The reasons for the cracks in the house are nothing more than the lack of foundation bearing capacity, the quality of the wall itself, plastering cracks, etc., please find out what causes it, it is best to ask professionals to come and test it, safety first.

The cause of cracks in the walls of new houses, in addition to the cracks caused by the temperature above, may also be settlement cracks and structural cracks. In general, the foundation of a new home will remain stable for 2-5 years. We can wait until the crack is stabilized and repaired with cement mortar, and after repairing the crack in a short time, the wall crack will occur again due to the settlement of the foundation.

If it is a structural crack, it is recommended to hire a professional building construction personnel to repair the wall.

How to prevent cracking of external walls of self-built brick and concrete houses in rural areas.

The choice of many peasant families is to build their own brick-concrete houses in rural areas, however, due to unprofessional construction and improper maintenance, cracking of the exterior walls of brick-concrete houses is a very common problem.

In order to prevent cracking of the exterior wall, the following aspects should be noted:

1.Reasonable design:

When designing the building, the reasonable wall width and seismic strength should be designed according to the local climate and geological conditions. Before surveying and designing, the stability and rationality of the structure are fully guaranteed.

2.Construction Technology:

The construction technology of brick-concrete structure is a key factor affecting the quality of the house. The integrity of the wall should be ensured during construction, especially the connection between the wall and the structural column, and reliable reinforcement measures should be adopted.

3.Material Selection:

The purchase of wall bricks, cement and other materials should choose regular manufacturers and brands, and fully consider the local climate and geological conditions, and choose suitable materials. At the same time, care and maintenance should be paid attention to during use.

4.Waterproof treatment:

Exterior wall cracking is often related to wall waterproofing. Waterproof materials, such as waterproof coatings or waterproof membranes, should be used during construction to do a good job of waterproofing the wall, and do a good job of moisture-proof and drainage.

5.Scheduled Maintenance:

Regularly inspect the exterior walls of the house for cracks, identify problems in time and deal with them. At the same time, it is also necessary to strengthen the daily maintenance of the house and keep the walls dry and ventilated to reduce the possibility of cracking.

1. Temperature cracking: This kind of crack is the most common in the wall, and this kind of crack is common at the junction of different materials, such as the horizontal crack at the junction of the ring beam and the brick masonry. General materials have the properties of thermal expansion and cold contraction, and the deformation of the house structure is caused by the change of surrounding temperature, and the expansion coefficient of different materials is different, resulting in thermal cracks.

This kind of crack only affects the interior appearance of the house, and will not affect the safety of the house, and some remedial measures can be taken appropriately: paste non-woven fabric at the crack, install steel plate mesh or plug the crack with mortar, and then paint and repair it. X0D X0A 2, cracks caused by uneven settlement of foundations:

After the house is built, the foundation generally sinks. If the settlement of the foundation is uneven, the part with the large settlement and the part with the small settlement occur relative displacement, and the shear force and tensile force are generated in the wall, and when this additional internal force exceeds the tensile and shear strength of the wall itself, cracks will be generated, and these cracks will increase with the increase of the uneven settlement of the foundation. This kind of crack is generally oblique crack, and the crack goes to the depression.

This kind of crack is more obvious in the lower part of the building, developing from the bottom to the top, showing the "eight" figure, and the inverted "eight" character horizontally, vertically, etc. When the settlement in the middle of the long building is too large, it will be cracked in the shape of "eight" from bottom to top at the two ends of the house, and it will first break through on the corner of the window; On the contrary, when the settlement at both ends is too large, the two ends are formed from the bottom to the top of the "eight" type crack, which also breaks through at the corner of the window, and can also break through at the middle window sill of the bottom floor to form a vertical crack from top to bottom; When one end sinks too much, an oblique crack with high settlement end is formed at one end; When the settlement at the intersection of the longitudinal and horizontal walls is too large, a vertical gap with a wide upper and a narrow lower part is just formed at the lower corner of the window sill, and sometimes there is a horizontal gap along the lower corner of the window sill; When the longitudinal and horizontal walls are concave and convex designed, due to the uneven settlement of one side, it can also lead to the formation of horizontal thrust and the formation of force couples, which can lead to vertical joints at the junction. X0D X0A 3. There is an error in the structural design, and the cracks caused by the unreasonable structure caused by the omission in the calculation of the load, and the unreasonable structure.

If it does not affect safety, it can be dealt with simply. If the impact is large, appropriate technical means should be taken to reinforce the treatment. If there is really no repair value, it should be demolished as soon as possible.

1. This may be caused by the problem of the location of the brick wall and the failure to operate in accordance with strict standards. 2. It is also possible that the insulation material of the wall is not very good, so the temperature resistance of the wall is not good, which leads to cracks on the wall due to the influence of temperature. 3. It may also be due to the lack of strength of the masonry and the cracks are generated.

Suggested solutions: 1. If the brick wall is paved in an unreasonable position, if the crack is not large, then the crack can be filled with mixed cement material, and then repainted. If the crack is large and deep, then you need to ask a special renovation person to inspect and deal with it.

Pressure grouting may be required to fill the cracks, which requires a professional operator. 2. If the problem is caused by the poor quality of the insulation material, then it may be necessary to re-paint a layer of thermal insulation wall, so as to solve the fundamental problem. It is best to choose a material of good quality that is resistant to moisture, moisture and heat.

3. If the cracks appear because the strength of the wall masonry is not enough, then this kind of cleaning is more dangerous and needs to be dealt with and solved immediately. Reinforcement measures need to be taken in a timely manner, and usually the method of adding columns or steel structure reinforcement may be used to deal with it.

Summary. 1. Temperature cracks: The change of temperature will deform the structure of the house, and the most well-known thermal expansion and contraction will cause the wall to crack, which generally occurs at the junction position, such as the place where the beam and the wall are connected.

2. Settlement cracks: This is caused by the subsidence of the foundation, and cracks will be produced if the foundation settlement is uneven.

3. Structural cracking: most of the reasons are that there are cracks in the wall itself, and no corresponding measures are taken to deal with them when the decoration is carried out in the later stage.

4. Cracking of the plastering layer: The cracking in this situation is mainly caused by the shrinkage of cement or the poor quality of the material, and improper construction will also cause cracking.

5. Cracking of the paint layer: mainly caused by improper materials or construction.

Temperature difference, thermal expansion and contraction will cause the wall to crack, and generally this situation occurs at the junction position, such as the junction of the beam and the wall.

It may also be caused by the subsidence of the foundation, and cracks will occur if the foundation settles unevenly.

The reason for the horizontal cracks in the brick-concrete wall.

Hello, I have seen your question and am sorting out the answer, please wait a while

1. Temperature cracks: The change of temperature will deform the structure of the house, and the most well-known thermal expansion and contraction will cause the wall to crack. 2. Settlement crack Lu Song Jian:

This is caused by the subsidence of the foundation, which can cause cracks to occur if the foundation settles unevenly. 3. Structural cracking and cracking: most of the reasons are that there are cracks in the wall itself, and no corresponding measures are taken to deal with it when the decoration is carried out in the later stage.

4. Cracking of the plastering layer: The cracking in this situation is mainly caused by the shrinkage of cement or the poor quality of the material, and improper construction will also cause cracking. 5. Cracking of the paint layer:

It is mainly caused by improper materials or construction. Temperature difference, thermal expansion and contraction, will cause the wall cracking, generally such a situation occurs in the handover position, such as the place where the beam and the wall are handed over, it may be caused by the subsidence of the foundation, and the uneven settlement of the foundation will produce cracks.

Masonry cracks are mainly original.

Bai cause: 1. Temperature du

resulting in deformation. by zhi

Depending on the temperature, each material as well.

The deformation of the special structure is inconsistent, and there is a relatively large binding force between the two genera, and the temperature difference is too large;

2. Uneven settlement of the foundation. For example, in the brick-concrete structure with relatively large length and height, when the foundation at both ends is smaller than the middle foundation, it is easy to produce figure-eight cracks, but when it is larger than the middle, it is easy to produce inverted figure-eight cracks;

3. The quality of the material is unqualified. For example, the quality of cement is substandard, and the sulfur content of pyrite exceeds the standard, which will produce masonry cracks.

The horizontal crack is caused by the resistance in the upper part of the settlement unit, so that the wall between the windows is subjected to a large horizontal shear force and goes up and down.

Horizontal crack capacity crack in the inner position. Horizontal cracks generally appear in pairs at the upper and lower corners of the wall between the windows, and the cracks on the side with large settlement are below.

The side of the settlement is small and the crack is on it.

The reason for the crack is generally said: the lower part of the wall should sink, and the upper part is connected horizontally and longitudinally well, and it is not easy to sink, so the lower part continues to sink and the upper part does not sink or sinks less, so the crack occurs).

Have you noticed cracks in the walls of your new or old houses, cracks are common? It is important to know that there are many reasons that can cause cracks in the wall. If a crack is found, it must be treated.

So I'll talk about itCracks appear in the walls of brick and concrete housesreasons andCracks appear in the walls of brick and concrete housesof the treatment.

1. Cracks in cement plaster.

The reason for this may be cracking cement and yellow sand is not correct when applied on the wall, causing cracking of cement mortar causes latex paint cracking.

**Method: First of all, remove the putty layer, after seeing the cracks in the coating of the cement, the carbon fiber adhesive can directly resist cracks, and this problem can be dealt with.

2. Crack latex paint.

Cracks appear in the surface of the paint film. In general, management issues are relatively straightforward. You can use fine sandpaper to polish the cracks and then repaint them with latex paint.

3. Crack temperature.

Flooring and masonry are mutually restrictive. If the outside temperature changes under the constraints, the temperature between the floor and the masonry will also be uncoordinated. When the temperature stress exceeds this limit, your masonry will experience temperature cracks.

Method: This is a common type. At this time, non-woven fabrics, PVC mesh fabrics, etc. can be attached to the cracks and then repaired with a brush.

4. Structural cracks.

Cracks appear in the walls of brick and concrete housesThe expansion joint between the structural wall and the brick wall extends to the surface of the wall, which is usually a crack formed by latex paint. When this type of crack occurs, you must find a professional in the building structure according to the current situation so that you can take appropriate measures.

Treatment: Relatively speaking, this type of crack is more complicated. When processing, all layers must be removed from the pedestal.

It is necessary to clean the cracks. Then, fill the gap with epoxy and use carbon fiber on the surface of the gap. The cracked fabric is reinforced and, once done, can be repaired with latex paint.

5. Cracking of the putty layer.

Usually, because the putty layer is too thin.

Treatment: Apply a crack-proof fiberglass mesh directly or apply a bandage to the wood pulp. Then it is very good to scrape putty.

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