I can think of many uses, but not for anything I need.
I live on about a mile long private gravel road on which many people drive too fast. I could cut the pipe in half lengthways and have two portable speed bumps.
I wonder how it would last as a road drag using two lengthways halves, open side down.
Use it as the outer housing for a can crusher. Convert your log splitter to ram aluminium cans into the pipe, then when its full the same ram shoves them out the end, giving you an aluminium cylinder or scrap.