fire brick

[sculptor]

My wood burning stove needs new firebrick
unfortunately the manufacturer is out of business and the firebricks are an odd size
ok now the question
I was thinking of adding
Sodium Silicate (sometimes called water glass) to this batch but have never used it before

normal batch would include silica sand, cement, perlite, and fire-clay
so
should one of the normal components be reduced if adding liquid sodium silicate water solution?

your thoughts?

 

[exchemist]

My wood burning stove needs new firebrick
unfortunately the manufacturer is out of business and the firebricks are an odd size
ok now the question
I was thinking of adding
Sodium Silicate (sometimes called water glass) to this batch but have never used it before

normal batch would include silica sand, cement, perlite, and fire-clay
so
should one of the normal components be reduced if adding liquid sodium silicate water solution?

your thoughts?

This is quite a specialised field. I'm afraid I have no expertise in it. I see that sodium metasilicate does indeed have applications in refractory ceramics, but that's about it.

 

[Xelasnave.1947]

Just get some clay ( from the side of road in my case) add 5% more sand, a bit of saw dust, make your brick a little bigger than you need , let it dry, file it down to fit , fire it and that should work.
Alex