I haven't done any corian segmented blanks and I'm sure CA is fine but based on my experience with kitchen worktops, my choice would be epoxy.
A version of this is what is used to glue worktops together with pigmentation to create almost invisible joints which are virtually as strong as the material itself
Despite what the marketing blurb says, it is actually porous albeit only very slightly. If you want to test that just put some curry or beetroot on to it and you'll get a rather nasty stain which has to be polished out.
bob