What are the effects of cracks in the house?

Because of the difference in temperature, most of the houses areReinforced concreteCombined with the brick wall to build, their respective expansion coefficients are different, under the same temperature change to produce different tensile stresses to cause the wall cracking, set upExpansion jointsCan.

Concrete: refers to a material made of cementitious material.

A general term for engineering composites that cement aggregates into a whole. The word concrete usually refers to the use of cement as cementitious material, sand and stone as aggregates; Cement concrete, also known as ordinary concrete, is widely used in civil engineering engineering when it is mixed with water (which can contain admixtures and admixtures) in a certain proportion and is mixed to obtain cement concrete.

Will cracks in the walls affect the overall structure of the house? There are six situations in which cracks appear in the wall of the house: 1. If it is a house with a frame structure, the shrinkage value of the concrete of the filling wall and the beam, plate and column is inconsistent, resulting in the shrinkage crack between the lower mouth of the beam and the wall.

2. If the house is newly built, there will be a settlement stability period in the house, and at this time, it is easy to produce horizontal and oblique cracks on the wall due to uneven settlement. 3. Due to the later stage of construction, the walls on both sides of the lower part of the window sill and the filling part of the construction opening are not constructed according to the requirements of the quality specifications, resulting in oblique cracks at both ends of the window sill and shrinkage cracks at the construction opening. 4. Shrinkage cracks at the splicing joints of the insulation board.

5 After the trunking is filled, cracks occur due to the difference between the drying speed and shrinkage rate of cement mortar and putty powder6 If the wall putty is scraped too thick at one time, or the thickness of the entire wall is too different, cracks will also occur. The formation of the above-mentioned cracks: some are caused by the characteristics of building materials, some are caused by construction technology, and some are caused by settlement.

But basically it will not cause the overall structural safety of the house. However, due to the large amount of settlement, cracks that exceed the design limit value should be paid close attention to. This problem rarely arises, and within half a year of the completion of the project, the settlement observation of the house is still ongoing.

In short, cracks within the allowable deviation value of the national standard are not treated.

The reason for the cracks in the house is temperature cracks: for the masonry structure, the mutual constraints between the floor and the masonry, in the case of constraints, if the outside temperature changes, the temperature between the floor and the masonry is deformed, and the masonry will produce temperature stress; Latex paint cracks: If the paint film on the surface is cracked, use fine sandpaper to polish the cracks off, and then repaint with latex paint; Structural cracks:

Expansion joints between structural walls and brick walls extend to the surface of the wall, and these cracks are also cracks formed by latex paint. Putty layer cracking: This crack is the slightest crack and is caused by the putty layer being too thick or too thin.

1. Find the commercial housing sales contract you signed, and see if it is written that there are cracks in the house, whether the developer needs to compensate, how much compensation, or whether there is liability for breach of contract. If there is a write, it will be executed according to the contract.

2. But it is impossible for a shrewd developer to write, at most according to the regulations, the developer will repair it for you, and then you can collect the house.

3. The general practical situation is that this kind of crack is a common thing, the owner takes a photo, and then writes on the acceptance form that there are these problems, and the two parties agree on a time to repair it. Then wait for the repair to be done again and then accept.

4. If the owner feels that there is a quality problem, he can find a third-party authoritative testing agency to test the quality of the house, prove that there is a problem, and refuse to sign for it. However, the cost is very high, and the average case is 10,000 cases.

If there are cracks in the house, it is most necessary to repair them quickly, otherwise the cracks will get bigger and bigger, and the collapse will endanger the safety of life and property.

What are the effects of cracks in the house? Cracks in the house indicate that the firmness of the house is affected, and it will also affect the feng shui in the home.

Reasons why cracks can occur in a house, cracks in a house are particularly dangerous. Reason: Because most of the gaps are caused by unreasonable engineering construction, there should be no danger in the early stage, but in the long run, there will be safety risks.

Caused by thermal expansion and cold contraction deformation, it is generally in the horizontal crack of the ground ring beam along the high-rise (flat roof) of the house, the vertical crack along the window corner, and the diagonal crack along the window corner or the inner longitudinal wall (there are many on both sides, large, and almost no in the middle); There is also a chimney along the wall piece on the interface.

Settlement cracks, caused by uneven (differential) foundation settlement between the foundation and the foundation, the wall is a positive figure-of-eight and inverted figure-of-eight oblique cracks; the horizontal cracking of the upper end caused by the delamination and shrinkage of the brick joint mortar; Longitudinal cracking of reinforced concrete beams caused by the settlement of the bracket foundation; Deformation gaps, cross-cracks in the wall caused by deformation; longitudinal cracks in longitudinal and longitudinal wall connections; Crooked rupture caused by these.

Structural cracks, also known as load gaps, are caused by load efficiency, such as multiple longitudinal gaps in the column wall under the beam; The beam guardrail plate bears the horizontal cracks, oblique cracks, and vertical cracks around the whole line at the main reinforcement of the beam; cutting oblique crack next to the stent; Transverse cracks of flexural members. For masonry, the mutual restraint between the ribbed floor and the infill wall, in the case of no tubing, if the external temperature changes, the temperature between the ribbed floor and the infill wall changes, and the infill wall often causes temperature in-situ stress; If the paint gap on the wall is cracked, the crack can be polished with sandpaper, and then the wall paint can be brushed again; Structural cracks, deformation joints between the structural wall and the brick wall will extend to the surface of the wall, such gaps are formed by the wall paint, the putty layer cracks, this kind of crack is a very slight crack, caused by the putty layer is too thick or too thin.

If there are small gaps in the wall, the problem is slight, it doesn't matter which kind of small and thin gaps, just the wall surface architectural paint is not done well, you can also put a glasses frame or a frame on the wall, and decorate the wall. It's more beautiful to make the wall a photo wall. Shovel the wall, if there are more small gaps in the wall, it is more serious, then it needs to be constructed again.

It is necessary to shovel off the original architectural paint of the wall until it is shoveled to the wall.

There are many reasons for cracks in the house, it may be that the developer's house is defective, or it may be that the load-bearing wall has been injured during renovation. It is very dangerous for cracks to appear.

That's because of aging. It is particularly dangerous and needs to be reworked.

Some owners may think that cracks in the house are common and there is no need to pay attention to this idea, this idea is wrong, and the cracks in the house indicate that the internal structure of the house may be damaged, which is a sign of danger.

Legal analysis: cracking depends on the size and location of the crack, if the surface cracking is generally due to the moisture when painting the wall, in the rush to do the surface layer after not waiting for drying, after experiencing thermal expansion and contraction of the layer cracking, this situation generally does not affect the quality of the house and living. If it is a crack in the deep structural layer of the wall, it is a structural problem, it is recommended to ask a special person to go to Bu Heng to inspect the door, if it has been reinforced by professionals, or there is a problem with the shape file, it is not recommended to live.

When choosing a building deformation joint device, many factors should be taken into account.

Legal basis: According to Article 13 of the Interpretation of the Supreme People's Court of the People's Republic of China on Several Issues Concerning the Application of Law in the Trial of Cases Involving Disputes over Commercial Housing Sales Contracts, "if the buyer's request to terminate the contract and compensate for losses is seriously affected by the quality of the house, it shall be supported.

If there is a quality problem in the house delivered for use, the seller shall bear the responsibility for repairing it during the warranty period; If the seller refuses to make repairs or delays the repairs within a reasonable period of time, the buyer may make the repairs on its own or by entrusting others to do so. The seller shall bear the cost of repair and other losses caused during the repair period. ”

Legal analysis: cracking depends on the size and location of the cracking, if the surface cracking is generally due to the moisture when painting the wall, in the rush to do the surface layer after not waiting for drying, after experiencing thermal expansion and contraction, the cracking of the layer, this situation is generally not known to the quality of the house and the residence. If it is a crack in the deep structural layer of the wall, it is a structural problem, it is recommended to ask a special person to come to investigate, if it has been reinforced by professionals, or there is a problem, it is not recommended to live.

Legal basis: Interpretation of the Supreme People's Court of the People's Republic of China on Several Issues Concerning the Application of Law in the Trial of Disputes over Commercial Housing Sales Contracts Article 13 If the buyer's request to terminate the contract and compensate for losses is seriously affected by the quality of the house, it shall be supported. If there is a quality problem in the house delivered for use, the seller shall bear the responsibility for repairing it during the warranty period; If the seller refuses to make repairs or delays the repairs within a reasonable period of time, the buyer may make repairs on its own or by entrusting others to do so.

The seller shall bear the cost of repair and other losses caused during the repair period.

Repair with putty. If the cracks in the house are not caused by structural problems, but only cracks in the walls, then putty can be used to repair them. Fill the gap with putty first, and then apply a layer of latex paint to its surface when it is filled.

Since there are no safety issues with the wall, it can be used again when the surface of the wall is repaired.

Relevant information: 1. If the foundation has uneven settlement problems, it will cause the tensile force generated by the wall to exceed the range that it can bear, resulting in serious structural gaps. This is more dangerous, and it is necessary to contact the relevant personnel in time for repair.

2. If the bearing capacity of the upper part of the house is too small to meet the requirements, there will be gaps. Moreover, in the process of renovating the pipeline in the later stage, the overall performance of the wall will be destroyed, the bearing capacity will be reduced, and the wall will crack.

3. If the quality of the selected decoration materials is too poor, or the skills of the construction personnel are not up to standard, the wall will crack. Therefore, it is best to purchase the best materials and carry out the construction by professional construction personnel.

4. Use grout for repair. If the cause of the gap is caused by the structure of the house, it is necessary to mix the cement mortar according to a certain proportion, and then use the method of high-pressure grouting to pour the cement mortar into the gap, wait for a period of time, and let it solidify. Due to the structure of the house, it will bring safety problems, so try to deal with it by professionals.

1. Temperature cracks.

For the masonry structure, the floor and the masonry are mutually constrained, and in the case of constraints, if the external temperature changes, the temperature deformation between the floor and the masonry is not coordinated, and the masonry will produce temperature stress. The masonry itself has a limit value of tensile and shear strength, and when the temperature stress exceeds this limit, the masonry will produce temperature cracks.

2. Cracks in latex paint.

If there are cracks on the surface of the paint film, you can use fine sandpaper to polish the cracks off, and then repaint them with latex paint.

3. Structural cracks.

Expansion joints between structural walls and brick walls extend to the surface of the wall, and these cracks can also manifest as cracks formed by latex paint. If this kind of crack occurs, you should find a professional building structure personnel to take corresponding measures according to the actual situation.

4. Cracks in the cement stucco layer.

This kind of cracking is often the ratio of cement and yellow sand when the wall should be powdered, many hydraulic enterprises reduce the amount of cement, and the result is the cracking of the cement mortar stucco layer, and lead to the cracking of the latex paint.

5. Cracking of the putty layer.

This crack is the slightest crack and is often caused by the putty layer being too thick or too thin.

How to deal with cracks?

1. Temperature cracks in the house, this crack usually does not affect the structure of the house, this crack mainly affects the aesthetics of the appearance of the house, then we can use some repair measures, we can use non-woven fabric to paste on the crack, PVC mesh cloth pasted on or plug the crack with mortar, and then use paint to repair it.

2. The settlement cracks in the house, the occurrence of such cracks is relatively slow, it takes a certain amount of time, and the repair time of this crack must be carried out after the crack is stable. Usually the settlement of the foundation of a new house will be stabilized within 2-5 years. If the crack has little impact on the overall aesthetics of the house, it can be repaired after the first repair.

The repair is generally filled with cement mortar, polymer mortar or elastic putty and gypsum, and the caulking tape is pasted.

3. Structural cracks in the house - ordinary decoration methods cannot be repaired, and professional building structure personnel must be found to take corresponding measures according to the actual situation.

4. Latex paint cracks on the surface of the house wallpaper cracks: If it is only a crack in the surface paint film, use fine sandpaper to polish the cracks off and repaint them. If the wallpaper is cracked at the joint, moisten it with warm water and re-apply the wallpaper glue to paste.

5. Cracks in the house putty leveling layer: If the cracks have penetrated deep into the putty layer, you can first use a sharp tool to expand the cracks to a cone size, fill in the caulking plaster and polish and level, paste the grid cloth or kraft paper and then use putty for leveling, and then paint or paste wallpaper according to the normal process.