There are a few pictures of pools using insulated concrete forms
We've recently built a few pools in the UK using the above system for ICF swimming pools. The system is particularly suited to constant depth pools where the rapid construction method can be best utilised. We are also creating a monolithic shell (pouring walls and floor in one go), so the structures are rock solid. Website will follow liked via our Brookforge main website.
Be sure to use a Top Insulating Coating that resists algea, mold, fungi and is safe, I recommend www.ecosmartepoxysystems.com