Hi guys, first of all I'd like to comment on how informative and friendly this forum is (talk about sucking up). I'm yet another Aussie who is venturing into the pizza oven obsession.
I have spoken to a kiln builder who says there is no reason why a lime and sand mortar mix will not do the job for a pizza oven that'll get to 700-800 deg F. I'm only intending to use the oven on a weekly basis for a few pizzas and and to roast anything I can get my hands on.
Regards,
Mr g