Concrete floor installation problems
A plumbing contractor had to dig up the floor in my bathroom, then reinstall the concrete floor. The initial floor installation was not level and had a hump in te middle. The first attempt at correction was to pour a small amount of allegedly self-levelling concrete, which was badly poured, with gaps, still not close to level, and which upon drying had cracks, then essentially broke when stepped on. The next fix was to pour more concrete. Since I did not view the installation myself, I am not surw if they poured the new concrete over the prior failed repair concrete, which was both cracked and broken and sat on the floor like a pancake on a pan. (Though the person who was there quoted the guy as saying that removal of the concrete from the prior fix was not necessary.)
1) Even if they did rip out the old concrete from the failed repair, does pouring the floor in two parts damage the structural integrity of the floor and/or limit its expected life span? If so, by how much?
2) If they failed to rip out the old concrete from the failed repair, so the floor is now poured in three parts, with the middle one cracked and broken, does this multi-part pouring, with broken and cracked concrete in the middle, damage the structural integrity of the floor and/or limit its expected life span? If so, by how much?
Thanks.