So I thought I'd do an experiment and fire up a paver in my BBQ to see how it went, I'm going to bore you with as much info as i can think of so i give you as much as possible.
the date is 21/7/9 and in melbourne i purchased a 400mm sq by 50mm deep red clay paver from bunnings which cost @ $5, the temperature outside is @ 15 C and I have a 3 burner BBQ which i have taken the plates out of so i can sit the paver right on the burners, actually it sits @ 3 cms above which is perfect i think, the 2 burners completely cover the paver in flame and flame goes around the sides as well.
I put it on full crank then place the hotplates on top of the paver and they sit @ 3cm above the paver, which is perfect i think. i leave some space to the side of the plates to allow oxygen in and out, plus i close the lid.
I have my bbq's thermostat and also i place a temp gauge right on top of the paver, the bbq thermostat reaches 230C but the one inside reaches its maximum of 315C quickly and can't go any higher so I think it got up to 350C ++
I then left it like that for 5 hours !!! , there was no noise, no cracking sounds and then I let it cool down, I also didn't do any pre heating of the paver I just went straight to HIGH.
Heres some photos:



In conclusion I will be using these pavers for the base of my pizza oven, of course you should stay tuned to see what happens in real life but I think it should be fine.