We do even fragile layers of concrete patching where the slope is wrong, and we make applications of a few inches of concrete with a special additive that is highly adhesive and bonds with the existing structure.
If the concrete is damaged and unsound, we do restoration of the slab.
If the rebars are exposed, we clean them and apply coated with a special corrosion free coating. If the deterioration is too progressive, we do the replacement of rebars.