Something similar has been discussed in the past "Extruding Ice from Steel Fences and Pipes with Diurnal Freeze/Thaw" http://my.ilstu.edu/~jrcarter/ice/diurnal/extrude/ , but most of the links are dead :( :( :(

https://news.ycombinator.com/item?id=2089306 (148 points | Jan 10, 2011 | 13 comments)

https://news.ycombinator.com/item?id=26121775 (261 points | 11 months ago | 21 comments)

Anyway, from one of the comments I got this video "Extruding Ice From A Steel Pipe- Time Lapse" https://www.youtube.com/watch?v=nbiEfr5FxEA