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

Like Tree5Likes

Reply
 
LinkBack Thread Tools Display Modes
  #41  
Old 08-29-2013, 02:38 PM
Southboom's Avatar
Laborer
 
Join Date: Aug 2013
Location: Suburbs of Stockholm, Sweden
Posts: 78
Default Re: Somewhere in the slumering suburbs of Stockholm

Quote:
Originally Posted by texman View Post
SB
are you putting the concrete board underneath the floor bricks? you dont want to do that. too much heat there. You can put the concrete board on the slab then the insulating board then the leveling stuff then the floor brick
Im not the expert here, but these lightweigt concrete boards or AAC blocks i have is made of what i think is the same thing as the LECA (Light Expanded Clay Aggregate) blocks that i used to build the stand, just a bit more compact and with smaller expanded claydite, claydite is what these are made of and is what you can use to make a vermicret type of mixture for the dome. Now im not entirely sure if these are the same. The AAC blocks has a thermal conductivity of 0.19 W/(m.K). So i think these should be ok, but if someone knows better or has an objection, i'm more then glad to hear about this. Because putting another layer of fire board is not a problem.

Thermal conductivity on some materials: Thermal Conductivity of some common Materials and Gases

And i found this, a country mate using LECA: Finally a Swedish neapolitan WFO underway

Quote:
Originally Posted by texman View Post
I do not see why you cant use the insulating board on the dome if you are willing to cut it into smaller pieces and somehow hold it in place. that is the challenge i think. The blanket is just easier there, but has the same characteristics.
Tex, i'm sorry. I expressed it in the wrong way. What i meant is if you can use this fire board, cut it up and mix it with portland cement. Instead of vermiculite

Last edited by Southboom; 08-29-2013 at 02:59 PM.
Reply With Quote
  #42  
Old 08-29-2013, 02:48 PM
Southboom's Avatar
Laborer
 
Join Date: Aug 2013
Location: Suburbs of Stockholm, Sweden
Posts: 78
Default Re: Somewhere in the slumering suburbs of Stockholm

I draw this arrow on the ground whit a piece from one of the broken blocks, as i found this felt just like chalk. May be that there is gypsum in there as well, or if they are entirely made of this

But at the DIY store it said lightweight concrete blocks.

Any advice on this topic is more than welcome!
Attached Thumbnails
Somewhere in the slumering suburbs of Stockholm-dsc01268.jpg  

Last edited by Southboom; 08-29-2013 at 03:06 PM.
Reply With Quote
  #43  
Old 08-29-2013, 03:09 PM
texman's Avatar
Master Builder
 
Join Date: Nov 2009
Location: Amarillo, Texas
Posts: 587
Post Re: Somewhere in the slumering suburbs of Stockholm

SB

Definitely not trying to hog your thread, but if you aren't sure what it is; why risk a failure? you really dont need that layer anyway. Are you are doing it just to level the floor? Use more of that clay/sand mix if needed. If you can find the temperature rating on the LECA then it would be proven. Looks like Tscar was on that other swiss thread and he should know what that stuff is.

As far as using the board in a mix: sure . How would you chop into small pieces? That board is usually nasty stuff and very bad for lungs and small dogs. But hey, if you can get it reduced to a small aggregate size, throw in some portland around 5:1 and it would work.

Tes
__________________
My Progress:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #44  
Old 08-29-2013, 04:52 PM
Southboom's Avatar
Laborer
 
Join Date: Aug 2013
Location: Suburbs of Stockholm, Sweden
Posts: 78
Default Re: Somewhere in the slumering suburbs of Stockholm

Quote:
Originally Posted by texman View Post
Definitely not trying to hog your thread
No worry, i'm glad we are having this discussion.

Yes, both for leveling and stabilizng. I did not wan't to put the floor directly on the fire board as it is not completely hard (I had read about this problem on this forum) and as i earlier wrote i put little pieces of the AAC block and placed them underneath the intercection of the top blocks. I hope I make myself clear.

Offcourse i could have put the floor pieces the same way directly on top of the fire board an with the supporting bits under, because as you can see, The floor bricks are big enough. But i wanted more support.

This is also earlier shown in the beginning of my thread. #8.
Could be that i rushed this on. But i am learning as im here.

I will for sure look it's properties up. But im not to found of removing these blocks, but if this is what i have to do i won't take a risk. OR i will put a new layer of 45mm fire board on top of that. More advice on this is appreciated.

Concerning the other matter, I'm glad we discussed this as well.
Because the neigbourhood is full of dogs, and small ones.
Yes i know of it's unhealthy characteristics. And i have the equipment.
It was just a thougt, if someone had done this...

It would probably be itching for month. And in worst case lead to bad rashes.

This is a true story and anecdote. One summer i worked at this decontamination firm and had this job removing old mold damaged mineral insulation under this kindergarden. I think we were wearing half masks. Hot as **** we couldn't possible wear any thick sweaters, only t-shirts. Not insured in anyway, this was a temporarily job for the summer. The boss was grumpy and wanted to see results and RESULTS! This was a long time ago. I was about 17 and health hazards weren't directly on my mind. On could just imagine what that **** did with one. Well, the one i am today is proof enough And not to speak about the itch, the got damned I.T.C.H! Just thinking of it makes my skin angry. Now i'm a mouthbreader, constantly swollen sinuses. Could be the cause of that. Or at least it wasen't of any beneficial.

I'm glad I brought this up, because i have all forgotten to call my doctor.
I think they need to remove my polyps, can't stand this anymore.

I'm glad to have shared this story to everyone out there

If anybody feels like it, to tell your story about hazardius matters.
I'm more then glad to hear about them.

Good night

Karl

Last edited by Southboom; 08-30-2013 at 01:53 AM.
Reply With Quote
  #45  
Old 08-30-2013, 02:07 AM
Southboom's Avatar
Laborer
 
Join Date: Aug 2013
Location: Suburbs of Stockholm, Sweden
Posts: 78
Default Re: Somewhere in the slumering suburbs of Stockholm

Found this information on the same type of blocks.
These had almost the same dimensions as well.

"H + H multi-plate is a solid lightweight concrete block used for load-bearing and non-bearing walls in single family homes, apartment buildings, offices, industry, schools / nurseries etc."

Advantages of H + H multi-plate inner wall
Quick assembly provides shorter construction
A heavy and massive inner wall
An inorganic wall that can not rot or mold
Multi-plate gives a healthy and good indoor
A fireproof wall
Easy to make fixings in the wall
Silencing

I don't know if this means that it can withstand a greater amount of heat for a longer time though. They will soon receive an email.
Reply With Quote
  #46  
Old 08-30-2013, 05:50 AM
Southboom's Avatar
Laborer
 
Join Date: Aug 2013
Location: Suburbs of Stockholm, Sweden
Posts: 78
Default Re: Somewhere in the slumering suburbs of Stockholm

I just reciveid this letter from a really nice woman at H+H Sverige AB.
I was unsure if these boards was actually their product.

Translatet from google, it might be hard to interpret:

"Hi Donald,

Thanks for your mail through our website. It sounds like an exciting project with a wood-burning pizza oven.

H + H delivers in the current situation are not products of the Bauhaus, so unfortunately I can not answer you if your tiles are leightweight concrete. Is it lightweight concrete, there are more different grades / densities of lightweight concrete that safely tolerate different amounts of heat. I suggest that you contact the Bauhaus and they can not help you, they know who hopefully supplier of the tiles they sell and are able to refer you to them.

Good luck with the pizza oven.

Sincerely

Maria Bengtsson

marketing Coordinator"

I'll soon be heading to Bauhaus and investigate this further.

It's strange how google translates my name to Donald. Perhaps this is due to my nickname, the one everone calls me by, is Kalle. And in sweden Donald Duck is Kalle Anka.
Reply With Quote
  #47  
Old 08-30-2013, 02:17 PM
Southboom's Avatar
Laborer
 
Join Date: Aug 2013
Location: Suburbs of Stockholm, Sweden
Posts: 78
Default Re: Somewhere in the slumering suburbs of Stockholm

Been sitting a while now and tried some different sizes on the stones for the dome structure. I think I have come up with something I'm satisfied with.
The top row is without joints, now i can do that, Just a little more work. The saw im using can tilt in all directions.

What do you think ?

Best regards
Karl
Attached Thumbnails
Somewhere in the slumering suburbs of Stockholm-oven.jpg  

Last edited by Southboom; 08-30-2013 at 05:00 PM.
Reply With Quote
  #48  
Old 08-30-2013, 02:20 PM
Southboom's Avatar
Laborer
 
Join Date: Aug 2013
Location: Suburbs of Stockholm, Sweden
Posts: 78
Default Re: Somewhere in the slumering suburbs of Stockholm

The stones im using are tapered by default
Reply With Quote
  #49  
Old 08-30-2013, 06:24 PM
cobblerdave's Avatar
Il Pizzaiolo
 
Join Date: Jan 2010
Location: brisbane australia
Posts: 2,337
Exclamation Re: Somewhere in the slumering suburbs of Stockholm

Gudday
Autoclaved airated concrete block . Are you using this for you under hearth insulation. If you do it does come with a warning from me. Portland cement products will start to break down at temps over 300C . So use, over time could see it start to break down.
I have used it in my own oven under the hearth and its been three years now with no problems,But. I always say that that if you do use it realize this. And if you do put at least some some FBI board or pealite/cement layer to protect it against the worst of the heat
Regards dave
__________________
Measure twice
Cut once
Fit in position with largest hammer

My Build

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

My Door

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #50  
Old 08-30-2013, 08:29 PM
Southboom's Avatar
Laborer
 
Join Date: Aug 2013
Location: Suburbs of Stockholm, Sweden
Posts: 78
Default Re: Somewhere in the slumering suburbs of Stockholm

Thank you for that information Dave!

I didn't have time to go to the DIY store yesterday, but will make a visit and talk to them today.

I think i will go with a Leca ball/cement mix since i have read others use this for insulation, and i'm in possession of a big bag of these. These have been heated and expanded much like the vermiculite and allthough not the same thermal performance, I think these will do the jobb. Do you think 1" is enought between the the floor and the airated concrete ?
Reply With Quote
Reply

Tags
sweden, tongues, wityness

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
Primavera in Western Suburbs of Chicago? DavisI Central US 0 01-29-2013 01:24 PM


All times are GMT -7. The time now is 06:41 PM.

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