It can be repaired by nano-rubber combined with cement-based osmotic crystallization (waterproof coating).
Problem analysis:
There are several reasons for floor cracking:
1. The structural scheme is unreasonable and the floor is too long.
2. The construction mixture ratio is unreasonable, the aggregate base is not matched properly, and the water-cement ratio is too large.
3. Thick building slabs are not constructed according to the requirements of mass concrete.
4. Insufficient floor reinforcement.
5. Uneven settlement of foundation.
6. No temperature reinforcement is installed on the floor.
7. The floor is overloaded.
If the house is already in use, then the biggest possibility is uneven settlement. If conditions permit, it is best to wait until the house has settled evenly. )
Solution: First, repair the original leaking part with waterproof coating (by pouring), and then fill it with nano rubber.
Finally, handle the corner finishing work.