How to deal with cracks in cast-in-place slab of commercial housing

There are cracks in the cast-in-place slab of commercial housing, which belong to penetrating cracks. Every room has a crack running through it. What should I do? One of them was tested. The test conclusion is that the cracks in the cast-in-place slab are mainly caused by a large number of protective deposits of negative bending moment steel bars on the slab surface, and the shrinkage of the mixed forest soil itself plays an unfavorable role in the crack development.

In the process of concrete hardening, shrinkage occurs due to concrete dehydration, or cracks occur due to uneven expansion and contraction due to the influence of temperature difference.

Formation of cracks: In the process of concrete hardening, cracks are caused by dehydration or uneven expansion and contraction of concrete due to the influence of temperature difference between high and low temperatures. Concrete crack repair treatment refers to the technology of repairing concrete cracks by scientific methods.

There are generally three kinds of concrete cracks: static cracks, active cracks and developing cracks.