Epoxy concrete. By Michel Uphoff. 23:16 video:
https://www.youtube.com/watch?v=sBn0Um6XFX0
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Epoxy concrete. By Michel Uphoff. 23:16 video:
https://www.youtube.com/watch?v=sBn0Um6XFX0
Re: Adding reinforcement. Are you thinking something like Rebar or something else? From over in resin casting land I've learned that warming the epoxy increases its "flowability" and might help with air bubbles, but a vacuum or pressure chamber would probably be better if you can find one large enough to accommodate the volume.
Interesting study of epoxy concrete. If I understand the original problem, then I challenge the assumption that making the column more rigid will reduce head deflection. Here is my experience- https://rick.sparber.org/WGI.pdf
Rick