What are the causes of horizontal cracks in the wall, who will talk about it

Hummer Crack Repair Adhesive Summary:

1) Shrinkage cracks: caused by the shrinkage of dry and wet changes of materials, generally in the form of a network on the wall, and two different materials may be formed on its interface;

2) Temperature cracks: caused by thermal expansion and cold contraction deformation, generally in the top floor of the house (flat roof) along the horizontal crack of the ring beam, along the vertical crack of the window corner, along the corner of the window or the diagonal oblique crack of the inner longitudinal wall (there are many at both ends, large, basically no in the middle); There is also an interface along the chimney of the attached wall;

3) Settlement cracks: oblique cracks in the shape of the wall caused by the uneven (differential) settlement of the foundation; the upper horizontal crack caused by the pulverization and compression of the mortar in the mortar joint; vertical cracking of reinforced concrete beams caused by support settlement, etc.;

4) Deformation cracks: cross-cracks on the wall caused by deformation; vertical and horizontal walls are connected with vertical cracks; fractures caused by tilting, etc.;

5) Structural cracks: also called load cracks caused by load, such as multiple vertical cracks of wall columns under girders; transverse horizontal cracks, oblique cracks, and vertical cracks in the middle of the span at the main reinforcement of the beam and slab; shear oblique crack at the side of the support; transverse cracking of tension members, etc.

Among the above cracks, the three types of cracks are not dangerous, but they are not absolute, and they need to be identified and analyzed on site.

Dear, hello, I'm glad to answer for you: what are the causes of horizontal cracks in the wall, who will talk about it? The fullness of masonry mortar is not enough; The quality of masonry mortar does not meet the requirements; Improper masonry methods.

1. Temperature cracks are the most common in the wall, and this kind of crack is common in the joints of different materials, such as the horizontal cracks 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. 2. Cracks caused by uneven settlement of the foundation After the house is built, the foundation will generally sink.

If the settlement of the foundation is uneven, the relative displacement of the part with the large settlement and the part with the small settlement occurs, and the shear force and tensile force are generated in the wall, and when the additional internal force exceeds the tensile and shear strength of the jujube slag 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.

Horizontal wall cracks are cracks that occur along the horizontal level of the wall, causing the wall to be uneven, ugly, and may have an impact on the load-bearing capacity of the wall. There may be several reasons for this:

1.Excessive weight load. If the weight load inside the building exceeds the load-bearing capacity of the structure for which it was designed, horizontal cracks can occur in the walls.

For example, adding a heavier room at both ends of a load-bearing wall or grouping heavy objects such as furniture in the same area can cause excessive loads on the wall, resulting in horizontal cracks.

2.Fundamental questions. The foundation of a building is under pressure from the land, and if the foundation is not properly designed, improperly constructed, or the land settles, it will lead to horizontal cracks in the wall.

3.Temperature difference changes. In areas with large temperature differences, such as the northern region, the temperature difference between indoor and outdoor is large, and the walls are prone to horizontal cracks caused by temperature changes.

Especially in winter, when the temperature difference between indoor and outdoor is large, the exterior wall of the building may alternate between hot and cold, causing thermal expansion and contraction, resulting in horizontal cracks in the wall.

4.Construction issues. Horizontal cracks can also occur in the walls of a building if the construction of the walls is improper, such as uneven foundations, low horizontal accuracy, unlaid stiffeners or improper use of cement mortar.

5.Land subsidence. Due to geological reasons or changes in the surrounding environment after the construction of the building, the land subsidence may also cause cracks in the horizontal area of the wall.

Therefore, when building and using buildings, attention should be paid to design, construction, and maintenance to avoid horizontal cracks in the walls. Especially in summer and winter, the temperature inside the building should be adjusted according to the weather conditions to reduce the impact of thermal expansion and contraction. At the same time, pay attention to the maintenance and inspection of the building, and find and deal with wall problems in time.

Summary. Hello dear, I am glad to answer for you: the reason for the horizontal cracks in the façade is:

Figure-of-eight cracks, usually longitudinal of the house, on the top or bottom floor of both ends of the house, or through one or two floors, symmetrical oblique cracking, the appearance of the "eight" shape, or the inverted "eight" shape, are called eight-figure cracks. The key words are: both ends of the house, oblique, symmetrical.

It is generally common in brick-concrete structures, and is mostly formed by uneven settlement of the foundation. Horizontal cracks are cracks that form in the walls of the house in the horizontal direction. Horizontal cracks are mostly formed by temperature stress failure.

It is commonly found in the combination of different materials on exterior walls. Such as: concrete beams or concrete building (roof) cover and brick wall junction.

Its shape is a horizontal straight line. It is in the shape of "one".

Dear, hello, I am glad to answer for you: the reason for the horizontal cracks in the exterior wall is: the figure-eight cracks, usually longitudinal of the house, on the top or bottom floor of both ends of the house, or through one or two floors, symmetrical oblique cracking, the appearance of the "eight" shape rises and contains, or the inverted "eight" shape, are called eight-figure cracks.

Horizontal cracks are cracks formed in the horizontal direction of the collapsed body of the house wall. Horizontal cracks are mostly formed by temperature stress failure. It is commonly found in the combination of different materials on exterior walls.

Such as: concrete beams or concrete building (roof) cover and brick smiling wall junction. Its shape is a horizontal straight line.

It is in the shape of "one".

The horizontal crack in the middle of the third floor wall of the four-story building belongs to the foundation subsidence.

Yes. So what to do?

Figure-of-eight cracks, usually longitudinal of the house, at the top or bottom of both ends of the house, or through one or two floors, symmetrical oblique cracking, the appearance of Tongchi is a "eight" shape, or an inverted "eight" shape, are called eight-character cracks. The key words are: both ends of the house, oblique, symmetrical.

It is generally common in brick-concrete structures, and the multi-transport wheel spike is formed by the uneven settlement of the foundation. Horizontal cracks are cracks in the walls of the house along the horizontal direction. Horizontal cracks are mostly formed by temperature stress failure.

It is commonly found in the combination of different materials on exterior walls. Such as: concrete beams or concrete building (roof) cover and brick wall junction.

Its shape is a horizontal straight line. It is in the shape of "one".

There are many reasons why cracks can occur in the walls of a house:

a. Temperature difference crack - the form is a positive figure-eight seam, an inverted figure-eight seam, a horizontal seam, etc.

b. Taking the brick-concrete multi-storey house structure as an example, when the roof is a reinforced concrete slab and the wall is a brick wall, the wall is particularly prone to temperature difference cracks, especially the top floor and the root of the parapet.

The severity of the temperature difference crack is related to the indoor and outdoor temperature. Construction quality, expansion joint spacing, roof insulation, window size, wall thickness, etc.

Corresponding measures should be taken to prevent and repair these cracks in a timely manner.

1 may be the upper and lower materials are different, the top may be brickwork, the bottom may be cement mortar pouring 2: it may be that the upper and lower walls are not built at the same time 3: this situation is normal high-rise will have a medium situation. Later, it was put on with a bandage to decorate the home, and it was not cracked.

Answer 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 cracks:

This is caused by the subsidence of the foundation, which can cause cracks to occur if the foundation settles unevenly. 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:

It is 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.

For example, temperature differences, such as masonry structures, and so on. Cracks are related to the temperature difference between indoor and outdoor, construction technology, quality, expansion joint spacing, insulation layer, window opening, wall thickness, etc. Especially if your walls are brick and the roof is made of steel, it is easy to crack.

Horizontal cracks in walls are horizontal cracks that occur in indoor or outdoor walls. The appearance of such cracks is due to a combination of factors.

The following are the factors that can cause horizontal cracks in the wall.

Improper construction may not be up to specification for the skills or methods of construction, which may lead to horizontal cracks in exterior wall insulation, brick walls, concrete structural siding, etc.

Building Material IssuesThe quality of building materials can also have an impact on wall cracks. For example, if you use poor quality cement Qing parsley, its tensile strength may be insufficient, which can easily lead to cracks; The strength of the bricks is too small, it is difficult to withstand large pressures, and it is also prone to cracks.

Climate change, rising or decreasing temperatures, and increasing or decreasing humidity can all have an impact on walls. Cracks are prone to occur when walls shrink or expand due to temperature differences or changes in humidity.

Settlement of foundationsThe settlement of foundations can also lead to the creation of horizontal cracks. For example, some soils under the ground contain large amounts of organic matter, which over time can be deposited in large quantities, which eventually causes the foundation to displace and push horizontal cracks in the walls.

Natural disasters such as natural disasters such as typhoons and typhoons are also common factors that cause horizontal cracks in the wall.

In summary, there are various reasons for horizontal cracks in walls, including building construction technology, material quality, climate change, etc. During the construction process, meticulous construction and selection of high-quality building materials are required, as well as timely maintenance to reduce or avoid the appearance of horizontal cracks.