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Finished Flue Box and No Slump Aircrete Experiment

 
pollinator
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Here is my finished through the wall flue for my rocket mass heater. I will probably be using a barrel stove until I get the floor done but I will need heat to do that. Also experimenting with aircrete to prevent slumping? collapsing before it sets up.

Thanks for watching.
 
pioneer
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Location: North Country New Hampshire
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What was the final receipe tested here? I couldn't hear some of the amounts / ratios / ingredients etc.

We are about to make a hearth out of this stuff on which a 450lbs stove will rest on four legs. Thinking of doing a form out of sheet metal and pouring into that with a top layer (like 1/4") of straight concrete to help spread the loads out better.

Side note:
COPPA won't fine you personally ... google lying about who is responsible for content on their platform. They are the ones who will be fined as they have been in the past.
They were fined for tracking data on underage individuals and that is why this whole COPPA thing is being pushed right now. Instead of owning up to it they are instead threatening content creators as somehow being responsible for their actions :/

If you need a safe haven just migrate to bitchute ... anytime you "publish" a video on YT you can set it up to auto publish on your bitchute account. If you need help setting it up let me know ;)
 
William Egan
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Burton, Thank you for watching. My mix is basically 16 to 1 Portland cement to hydrated lime and a tablespoon of baking soda per 16 lbs of cement. I will do another video on the Quick Set 20 mix I did when it cures a bit more.It seems to have not had any collapse, it has cracked but I did move it soon after so I think that was my fault. I bought some Drexel foaming agent for about $24 a gallon including shipping and tax and I think that will probably be the ticket to good no slump aircrete. I hope that helps feel free to ask questions, I'm no expert but I'll tell you what works or does'nt for me.
  Bitchute sounds interesting, I'll check it out. I appreciate your offer to help, I'm pretty illiterate when it comes to anything technological but getting a bit better since I started youtube. Thanks and have a great day.
 
Burton Rosenberger
pioneer
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Location: North Country New Hampshire
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Thanks for the info.

I have hydrated lime, drexil, jlube, silica sand, portland,  and perlite on hand.

I've seen others using baking soda before but I don't recall seeing a 16:1 ratio of portland to lime. The jlube apparently makes a big difference in the distribution of the air bubbles but we shale see.
 
William Egan
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Not sure what the lime does but I think it helps stabilize the bubbles, Honey Do Carpenter talks about it, haven't got a hold of any J-lube yet. Oh and the Quick Set 20 I used 2 parts Portland to 1 part Quick Set, but I only used it in a test batch I made.
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Rocket Mass Heater Manual
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