There seems to be a problem when selecting concrete to upgrade to refined concrete {hazard concrete also}. Basically, the tiles are not selectable.
Under the deconstructor blueprint, there are separate tabs for 'entities' and 'tiles'. Creating a new regular blueprint will select tiles if there are no 'entities'.
I am currently working on implementing this, unfortunately it is not easy (I killed myself multiple times when upgrading away from landfill xD).
The only way to do this at the moment is with bots (take a blueprint -> Upgrade Blueprint -> Place the blueprint).
Due to the complexity I can't really promise this will ever be a feature...
