The reason why the wall cracks is that

The breaking of the new house sounds terrible, especially for the owners who don't know about it. Buying such a house may keep them awake at night. In fact, we don't have to be too nervous and anxious when buying such a house, because generally speaking, as long as there is no quality problem in the structure of the house, the risk of common cracks is very small and it is easy to repair. How to deal with wall cracking? Next, follow us to learn about the relevant content!

First, the causes of wall cracking

1, shrinkage crack. Due to the change and shrinkage of materials, they are generally reticulate on the wall, and two different materials may be formed on the interface;

2. Temperature cracks. Caused by thermal expansion and cold contraction deformation, it generally cracks along the horizontal ring beam of the top floor (flat roof), vertically along the window corner, diagonally along the window corner or internal longitudinal wall (both ends are wide and large, and there is basically no middle);

3. Settlement cracks. Inclined cracks in the wall with normal or inverted figure caused by uneven (differential) settlement of foundation; Upper horizontal crack caused by pulverization compression of mortar joint; Vertical cracking of reinforced concrete beams caused by bearing settlement.

4. Deformation cracks. Cross-cracking of wall surface caused by deformation; Cracking of vertical and horizontal wall connection; Fracture caused by inclination, etc.

5. Structural cracks. Load cracks are also called load cracks, such as multiple vertical cracks in the wall column under the beam; Transverse horizontal cracks, oblique cracks and circumferential vertical cracks in the middle of the beam slab; Shear oblique crack at bearing edge; Transverse cracks in tensile members, etc.

Second, the solution

1, shrinkage crack repair and reinforcement. Chisel a U-shaped groove with a groove depth of not less than 20mm and a groove width of 15mm along the crack direction on the construction surface; When the crack is fine, it can also be chiseled into a V-shaped groove. When it is an active crack, the groove width should be ≥ 15mm and the sum of 5 times of the maximum crack width, and then the joint is filled with joint sealant and bonded with fiber composite material to seal its surface.

2, temperature crack treatment. Surface cracks can be repaired with professional crack repair glue; When the crack width reaches 0. 1-2mm, the crack will be penetrated with joint filler.

3, the other three kinds of cracks. It is a serious structural quality problem, and such problems should not be closed; These problems were discovered only after the house was closed, and the solution should be discussed with the developer after the appraisal. If it is caused by barbaric construction, both the decoration company and the owner are responsible; If it is the quality problem of the house itself, it is the responsibility of the developer.

The above is Bian Xiao's detailed answer. I wonder if you are satisfied with our introduction.