Go Back   Forno Bravo Forum: The Wood-Fired Oven Community > Pizza Oven Design and Installation > Getting Started

Like Tree1Likes

Reply
 
LinkBack Thread Tools Display Modes
  #51  
Old 07-02-2010, 03:52 PM
Serf
 
Join Date: Jun 2009
Location: Perth Western Australia
Posts: 5
Default Re: High Heat Mortar Primer

Mike,

Something's not right for sure, i wonder what it is?

It sounds like you've just started with you brickwork. Have you for sure got the right ingredients in the right proportions? Those engineering bricks are probably not very porous and will benefit from being soaked for while. Even more so if the weathers warmish.

David

I'm going to stick with Portland, Lime, FC, Sand. 1:1:1:4. Better the devil you know.

Sutto
Reply With Quote
  #52  
Old 07-05-2010, 02:08 AM
Peasant
 
Join Date: May 2010
Location: High Wycombe, UK
Posts: 34
Default Re: High Heat Mortar Primer

Cheeers for the reply!

At the moment i'm laying everything with no probs but a day or so after the mortar has small cracks on every join. I'll just have to fill them. I'm using 1:1:1:3 (portland cement, hydrated lime, Fire clay, standard builders sand) so maybe I'll change it to 1:1:1:4 ?

Cheers! Happy building/pizza making to all

Last edited by mikesuttie; 07-05-2010 at 02:15 AM.
Reply With Quote
  #53  
Old 07-05-2010, 09:16 AM
Peasant
 
Join Date: May 2010
Location: High Wycombe, UK
Posts: 34
Default Re: High Heat Mortar Primer

I think I've worked out what may be the problem, I'm making my joinings way too large. having looked at other peoples domes I can see the bricks are far closer together and I'm evidently using far too much mortar. I'm on my 3rd course I think I'll have to live with the mistakes I already made and just correct them. Lesson learnt!
Reply With Quote
  #54  
Old 07-05-2010, 09:16 AM
Lars's Avatar
Journeyman
 
Join Date: Oct 2008
Location: Omaha
Posts: 255
Default Re: High Heat Mortar Primer

Mike,
I would cut down the lime and use the extremely fine sand ( for smaller joints) Here in the US, it is widely available and only costs a little more than 'all purpose' sand.

I am sure the 'recipe' I used is on here somewhere. 3:2:11/2) (sand, clay, portland, lime)

Just made pizza last night... and we have been using it regularly for about a year. ( regularly = about once a week)

Lars.
__________________
This may not be my last wood oven...
Reply With Quote
  #55  
Old 07-06-2010, 03:41 AM
Peasant
 
Join Date: May 2010
Location: High Wycombe, UK
Posts: 34
Default Re: High Heat Mortar Primer

Sounds awesome! Looked at your build and it has really confirmed what I've been doing wrong. Your dome bricks are all nice and tightly pack together whereas mine are miles apart with a load of mortar in them think I may have to rethink things a little. Question is do I knock it down and start over or just correct it and hope for the best!! Dilemma!
Reply With Quote
  #56  
Old 03-13-2011, 07:46 PM
Journeyman
 
Join Date: Aug 2010
Location: Glendale, Arizona
Posts: 397
Default Re: High Heat Mortar Primer

Hi All,

Look for silica sand at the following sources:

Welding supply, it's used for sand blasting operations.
Swimming pool supply store. It is used in sand type water filters
Brick yards
Masonry supply stores
Foundry supply, it's used for making sand molds.
Painter's supply, it's used to mix textured paint.
Aquarium supply.

Cheers,
__________________
Bob


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



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #57  
Old 04-27-2011, 02:52 PM
Serf
 
Join Date: Apr 2011
Location: texas
Posts: 15
Default Re: High Heat Mortar Primer

Gentlemen,

I read all the former posts on this thread but never heard
'Castable Refractory Cement' mentioned.
I used it when I built my propane forge and 2,000 degrees is nothing to the stuff. 1600 degrees is normal temperature while hammering metal.
Would Castable refractory Cement be of any advantage used on an oven?
Bricks are laid not with concrete but with mortar. I don't know why but then I am just a former roofer. Wouldn't cement be better?


Thank you...


Jack the Knife
Reply With Quote
  #58  
Old 04-27-2011, 03:26 PM
Tscarborough's Avatar
Il Pizzaiolo
 
Join Date: Oct 2009
Location: Ausitn
Posts: 3,108
Default Re: High Heat Mortar Primer

Castable refractory is good if you are casting a shape, but not so good for mortaring together bricks. Use refractory mortar for that, and it is cheaper than CR anyway.
Reply With Quote
  #59  
Old 04-27-2011, 04:17 PM
Serf
 
Join Date: Apr 2011
Location: texas
Posts: 15
Default Re: High Heat Mortar Primer

Tscarborough,

Thank you.
I was a music major at U.T. Austin Texas in the early 70's.

J. Winters von Knife
Reply With Quote
  #60  
Old 04-27-2011, 04:45 PM
Tscarborough's Avatar
Il Pizzaiolo
 
Join Date: Oct 2009
Location: Ausitn
Posts: 3,108
Default Re: High Heat Mortar Primer

I was a High Schooler from Houston who spent my summers on the Southwestern campus lying by the river and on the Guadeloupe in the early '70s
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



All times are GMT -7. The time now is 07:10 AM.

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