#1  
Old 12-08-2011, 03:51 PM
Dino_Pizza's Avatar
Il Pizzaiolo
 
Join Date: Feb 2008
Location: Northridge, CA
Posts: 1,015
Default Fireclay + Spec Mix OK for Homebrew or NOT

I am lucky enough to get to help my cousin build his 40 Pompeii and he's copying my build very close but got the following advice from 2 brickyards for making high heat mortar:

They said to just mix 1 part Fireclay with 2 parts "Spec Mix".

I'm trying to get get my cousin to make the real Home brew:
3 parts #60 silica sand
1 part Lime
1 part Portland
1 part Fireclay

But because 2 brick places told him the same thing, he feels that's the way to go. I'm wondering what the outcome might be using 1/3 fire clay in a bag of Spec Mix.

Any input is appreciated.
__________________
"Life is a banquet and most poor sons-of-bitches are starving to death." -Auntie Mame

View My Picasa Web Album UPDATED oct

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


My Oven Costs Spreadsheet

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


My Oven Thread

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #2  
Old 12-08-2011, 08:18 PM
Lburou's Avatar
Il Pizzaiolo
 
Join Date: Dec 2010
Location: DFW area, USA
Posts: 1,116
Default Re: Fireclay + Spec Mix OK for Homebrew or NOT

So, Dino, what is in the 'Spec Mix?"
__________________
Lee B.
DFW area, Texas, USA

If you are thinking about building a brick oven, my advice is
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Our One Meter Pompeii Oven album is
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

An album showing our Thermal Breaks is
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


I try to learn from my mistakes, and from yours when you give me a heads up.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #3  
Old 12-09-2011, 01:33 PM
Dino_Pizza's Avatar
Il Pizzaiolo
 
Join Date: Feb 2008
Location: Northridge, CA
Posts: 1,015
Default Re: Fireclay + Spec Mix OK for Homebrew or NOT

Spec Mix a name brand that's popular on the West Coast. It has a reputation for being a "higher end, consistent blend" of ordinary concrete mix. It's spec sheet says "Portland Cement, hydrated Lime, dried masonry sand". That's it. I don't know what proportions but it's suppose to be ordinary cement, just a bit more consistent than slightly cheaper cement.

I don't work with cement much (to be avoided second only to plumbing ) and can't recall too much the difference in my "homebrew" mix on the dome and my cement mix for the base and blocks, but it seems to me, that ordinary cement might have some larger grains of sand in it. But then again, I've read on FB where others used 'play-sand' in the homebrew which is not as "fine" as optimal but still works.

I bet the proportions of ordinary cements 3 ingredients are not equal which whats normally called for in homebrew.

Any thoughts would be greatly appreciated. (PS: my cousin bought all his insulation board and blanket from FB and was about to buy their mortar but is going this rout instead. Oh well, I tried)
__________________
"Life is a banquet and most poor sons-of-bitches are starving to death." -Auntie Mame

View My Picasa Web Album UPDATED oct

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


My Oven Costs Spreadsheet

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


My Oven Thread

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #4  
Old 12-09-2011, 01:47 PM
Tscarborough's Avatar
Il Pizzaiolo
 
Join Date: Oct 2009
Location: Ausitn
Posts: 3,077
Default Re: Fireclay + Spec Mix OK for Homebrew or NOT

There are many types of Spec-Mix, that is a brand name like Quickcrete. If you can find a "PCL Type N mortar" Spec-Mix, you are in the ball park to mix with fire clay for homebrew.

edit-The correct amount of fireclay would be approiximatly 16#s for an 80# bag of PCL Type N mortar.

Last edited by Tscarborough; 12-09-2011 at 01:51 PM.
Reply With Quote
  #5  
Old 09-23-2013, 08:45 AM
Serf
 
Join Date: Sep 2013
Location: Fresno
Posts: 1
Default Re: Fireclay + Spec Mix OK for Homebrew or NOT

I know this is an old post, how did the Spec Mix mixed with fire clay work out? Has is held up over time? I'm on the West Coast and I was told by 2 different suppliers mix 3:1 and also 6:1 (Spec mix : fire clay). I'm thinking about going 3:1. I called Spec Mix directly but they wouldn't recommend anything for obvious reasons.

Thanks,

Steve
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fireclay substitute arosheger Finding Building Materials 15 04-28-2011 11:41 AM
Fireclay in Central Indiana SergioG Finding Building Materials 5 07-16-2010 01:10 PM
Is fireclay necessary? SimonWoodfield Pompeii Oven Construction 35 08-25-2009 06:05 AM
Fireclay vs. Sand for floor Gromit Tools, Tips and Techniques 2 08-14-2009 08:42 AM
Fireclay under floor? CSWolffe Pompeii Oven Construction 2 06-23-2009 05:32 PM


All times are GMT -7. The time now is 05:16 AM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC