Mary & Wes Handrow on sun 17 may 09
A 50/50 mix of fire clay and grog with a little sodium silicate is a
standard mix. If you are only making up a small bucket of mortar a few
drops of sodium silicate is enough, for hard brick dip the brick in water
just before putting in place and the mortar should thin enough to ooze out
the joint. Not like red brick mortar which is thicker. For soft brick, di=
p
the brick in water and the mortar should about as thick as malted milk. Yo=
u
are just filling in the joint.
Paul Herman on sun 17 may 09
Hi Paul,
Try this recipe. I've used it many times over the years.
by weight
50 high fire grog or silica sand
50 fireclay or kaolin
It doesn't shrink very much.
best,
Paul Herman
Great Basin Pottery
Doyle, California US
www.greatbasinpottery.com/
On May 17, 2009, at 12:17 PM, Paul Borian wrote:
> Hello,
>
> I need to mortar a few bricks in place for some kiln repairs. Does
> anyone know how to mix a batch of mortar using common studio raw
> materials? I do live next to a concrete plant so I could get some
> Portland cement if that could be used, and I also have sodium silicate
> around (I read on a bucket of mortar I used long ago that it contained
> sodium silicate).
>
> If I was planning to be any where near the closest refractory
> supplier I
> would just buy some but it won't be any time soon so I would like to
> try
> to mix my own batch if possible.Any info appreciated!
>
>
>
> Thanks,
>
> Paul
Steve Mills on mon 18 may 09
I've used Kaolin and Sodium Silicate (75TW - the runny stuff) with about 5%=
85-dust grog in the past.
Worked pretty well.
Steve
Bath
UK
--- On Sun, 5/17/09, Paul Borian wrote:
From: Paul Borian
Subject: anyone have a recipe for kiln brick mortar?
To: Clayart@LSV.CERAMICS.ORG
Date: Sunday, May 17, 2009, 8:17 PM
Hello,
I need to mortar a few bricks in place for some kiln repairs. Does
anyone know how to mix a batch of mortar using common studio raw
materials? I do live next to a concrete plant so I could get some
Portland cement if that could be used, and I also have sodium silicate
around (I read on a bucket of mortar I used long ago that it contained
sodium silicate).
If I was planning to be any where near the closest refractory supplier I
would just buy some but it won't be any time soon so I would like to try
to mix my own batch if possible.Any info appreciated!
Thanks,
Paul
| |
|
