Main Question or Discussion Point
I am a structural engineer and have a situation where we have a corrugated plastic pipe formed inside of a square concrete column (pipe is 4" in diameter and column is 16x16). The top of the corrugated pipe is flush with the top of the concrete and open to the atmosphere. The bottom of the corrugated pipe is closed. Water is collecting in the pipes and freezing, and we are noticing cracks forming on the face of the concrete column. The reason for these cracks has been presented as being from the water freezing, expanding, and cracking the concrete. If the plastic pipe was smooth, of the same diameter over its length, and the top is open, I would say there is not expansion stresses on the concrete because the freezing water would not be constrained. However because of the presence of the corrugation, is this enough to cause constraint and create a plug that would cause the concrete to crack from the expansive forces of the water?