I had a new concrete driveway poured about 4 years ago with city permit and inspection built to code. The driveway has literally started to disintegrate before my eyes. Is there anything I can do to stop this process, or do I have to replace. I believe the concrete or base is at fault but am not really sure. Any ideas or suggestions would be greatly appreciated. I have contacted the concrete company who poured it and they have admitted no fault on their part.