Crushed Fire Bricks

I don't see why not....

Correct. Imagine leftover pieces of a cake, and the same question.

Thanks Doorman. I tried to think of an example, but couldn't come up with one. Cake is perfect............................you can't grind it back into flour.

Yeah, after something has been altered by exposure to heat it's pretty hard to un-ring the bell.

I suppose our friend Brett could pulverise the dropoff pieces and use the powder as part of the sand for grout, but I suspect this might alter the chemistry of the grout enough to be some trouble.

It does seem a waste to send the drops to a rubble fill site. That is what usually happens on projects in the USA.

I've got a dirt road coming out to my house that is owned by the county, but not maintained by the county..........................maintainence is up to me. I wish I knew this guy.

People wonder why I get frustrated with gov't. I pay my taxes and they won't even drop me off a load of gravel to fill in the pot holes.

cheers thanks a lot for your guys input

Bear in mind the silica content of some fire bricks.

Use the "drops' as clean rubble fill, rather than landfill them. Some land owners will accept them to fill depressions on their properties. As others have said before me, they cannot be reconstituted once the clay has been fired.

Yes! Look up homemade castable refractory articles by Lowell Baker in Ceramics Monthly. He used to be active on the clayart forum but I haven't been on in a long while. IIRC, The basic recipe is 2 parts by volume crushed firebrick in 3/4" to dust, 1 part Portland cement, 2 parts perlite and 4 parts sawmill sawdust, this last should be more like flakes and sifted through a 1/2'' screen. I think the basic mix was good to cone 3-4, higher (c10) with a added fraction of alumina hydrate or use of calcium aluminate cement from Lafarge industries. The high alumina mix could be applied as an inch and a half thick hot face as you ram up the forms. Best of luck B