Would the "Reds" be suitable for the Chimney?
I have lots of old reds from the front fence I pulled down and have run out of firebricks.
At $8 each here in Brisbane I am hesitant to built the chimney stack with fire bricks?
Cheers
Announcement
Collapse
No announcement yet.
Will these bricks work for the dome/hearth
Collapse
X
-
Originally posted by mefornaio View PostThose bricks are very old and "probably" closer to would not last very long even in the dome.
Leave a comment:
-
As he said you could "probably" get away with the reds but in my opinion that's a big risk. Those bricks are very old and "probably" closer to would not last very long even in the dome.
I built a small barrel vault bread oven years ago out of standard reds (new ones) and it held up fine. If your going to try to sub out the fire bricks, which really isn't a great idea but if so use new red solids as a replacement.
There are some areas that are best built using proven materials for their application. Using fire brick for the dome and hearth is one of those.
It's worth the expenses in the long run.
Leave a comment:
-
Originally posted by david s View PostThey should be around 2 kg/litre. A quick measure, calculate volume and then weigh the brick will give you its density.
Paver: 2140kg/L
Bulli brick: 2042kg/L
Canberra red: 1842kg/L but that includes the indentation. Maybe I could've submerged it and done a displacement test which would've tested sintering too but maybe next time.
So yea, seems like they are pretty solid. I don't really want to roll the dice though, without more tests.
Leave a comment:
-
The first pic looks like a fired clay paver which I think are extruded and wire cut. The second pic look like fire bricks and the third and fourth look likepressed red house bricks. The method they are made by has no bearing on their suitability. Neither is the temperature to which they are fired, it’s the composition of the clay body that determines their suitability and you will have no idea of this by looking at a photo, striking the brick with a hammer or hitting it with a blowtorch.
To test whether they have been sintered ( fires in a kiln to turn the clay permanent), soak the brick and rub the surface. If it doesn’t turn to mud it’s sintered.
Generally you need dense bricks for both the dome and the floor. The denser the brick the higher is it’s thermal conductivity, but the harder they are to cut. They should be around 2 kg/litre. A quick measure, calculate volume and then weigh the brick will give you its density.Last edited by david s; 11-14-2020, 09:42 PM.
Leave a comment:
-
you'll probably get away with using pressed reds for the dome, but not for the cooking floor.
Leave a comment:
-
Will these bricks work for the dome/hearth
Hi,
I'm researching red bricks to use for the dome/hearth as fire brick isn't available locally (I'm in Canberra, Australia). From my investigations, generally Australian sources say red clay brick is okay and standard, a sentiment less shared in other parts of the world. I'm not sure if our bricks are different at all.
However, I'm hopeless at telling which bricks are clay, fired, pressed. I have a few types and I'm hoping someone can help identify by looking at them
https://imgur.com/a/bmGFNmy
The first pictures are brick pavers from a driveway.
The next brick I'm not sure, but it's printed "Bulli 135 M"
The final pictures are what I'm pretty sure are pressed red brick (CB stands for Canberra Brick)
I've uploaded to here what I can (discarding some that don't fit the size requirements)
Paver
Unknown
Pressed RedTags: None
Leave a comment: