DIY Firebrick Mix Testing - High Temperature + Drop Test - Adding a Wire Mesh for Reinforcement
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- เผยแพร่เมื่อ 6 ก.ย. 2024
- In this video I test different blends of diy firebrick recipes along with introducing a wire mesh to tests its benefits as a reinforcement material. Sample number 4 heats up past 2400 F.
Video Idea Suggested by: MrArthoz - วิทยาศาสตร์และเทคโนโลยี
I would recommend using steel needles to make it stronger. We always used them when mixing refractory at work😊👍 It gets REALLY strong. As someone said, metal expands and makes it crack. But the needles are very thin and won't make them crack👌
Or just buy 1 mm stainless wire and cut them in about 10 or 15 mm each and mix them in your refractory. I can't tell you the exact amount as we used 4-6 handfulls for about 150 kg dry refractory cement.
A very nice, educational film. I think that you only made a mistake in the selection of materials, the first one is that the reinforcement can be dispersed, then the stresses are distributed evenly over the entire surface inside, and the second one is that you should use clay cement, i.e. refractory cement, e.g. Istra40 or Istra 50 or any other clay alumina cement, try it make from these materials. I will only add that you can also reduce the amount of water and use a polymerizer, i.e. a plasticizer, this will significantly improve the mechanical parameters, i.e. early strength, but it is not necessary because alumina cements have very high early strength, warm greetings from Poland :)🤝
I think you have knowledge on this subject. Do you have any knowledge or experience regarding lightweight concrete?
Nice video. I'd ditch the wire if you're only making bricks. i've used 4 parts perlite to 1 part portland cement in my furnace. its been holding up well. Cement really needs to be cured properly to get the maximum strength. I covered my furnace in plastic and gave it around a month before i fired it. You dont want the cement to dry out before its cured.
I think part of the problem may be using the cement. Remember that breaks down at High temperature. I would suggest a kaolin clay(fireclay), with about 20% sand. Kaolin clay can withstand much higher temperatures. Good luck
You can make kaolin yourself by mixing aluminium oxide with sodium silicate I believe. Edit--no, what I said was wrong. It does make a refractory material, but not that one specifically. I can't remember which materials to mix to make kaolin. I'm pretty sure that I saw a Robert Murray Smith video about making it though.
I think the mesh, expanded and contracted during heating process which caused the separation. Use fiberglass instead.
Good tests. Good to know about the wire. Testing ideas in real life. Things that may work in theory fail in real world application. Thanks I probably would have added wire thinking It would help. Nice video.
This is great. Maybe a re-do to see if wire gauge or mesh size changes can help? Keep the recipe the same and only change the mesh?
The reason the wire failed is because it was round wire and just layed flat across the disk. You should use expanded metal wire and make the wire mesh wavy and this would not happen. Also, using stainless steel works best because of the oxidation resistance. A better binder would help, try water glass addition.
i find the best furnace liner is simwool blanket good for 2300 degrees i have melted cast iron in it and it seems to hold up well
Yeah Dana i agree with simwool blanket, they are very easy to install and replace if needed. They handle the heat with ease and make the furnace look nice. Do you have any videos of melts you've done that I can check out?
no vidieos just kind of a hobby and i clean my dirty copper into number one by melting it i have a yard that will bye my ingots@@SizzlingIngot
The moisture boiling off uncured cement might generate cracks. Water glass used in the mix dries out slowly so this might increase cure time. Try saturating the cured test bricks in water glass and let them cure out by measuring the moisture content after the brick is cured prior to the saturation with water glass and then as the water glass cures. With a "complete cure" being 28 days for cement and likely the same for the water glass saturated bricks that is a lot of wait time. Like the tests ut my usage will be in an RMH and the custom cast briicks will be incase in Aircrete on one side and steel on the other all incased in 8X16X1 pavers on edge
Is water glass treated bricks safe to use in wood fire pizza ovens ?
You could try adding carbon fibre strands, just cut up a small piece of carbon fibre weave with scissors, the longer the strands the better but they are difficult to mix so I find 25mm is a good compromise.
Carbon fiber is toxic if it burns. Large refractory pieces usually have stainless steel fiber, sometimes referred to as “needles” added.
Could've shown the recipe somewhere. Like the comments or the description. Cool video but i learned nothing cause you didn't give any info.
Wtf are talking about??! The recipes are clearly shown starting at 2:00. It amazes me how oblivious people can be🙄
I would have used fiberglass instead of wire mesh in the refractory bricks.
Also, the mesh get to the sides of the brick, allowing the heat heat the metal, try to keep a few inches/centimeters of cement to protect the metal mesh.
metal wire always will expand more than the refractory mix, doesn´t add resistance, maybe as an open container, outside
Hey there... I just wanted give a lil input about the reason they broke or separated at the point of the hardware cloth, reason is that metal expands when heated and then shrinks when cooled cuasing the brick to break apart.. try using heat resistant wire if you want wire inside. hope it's helpful..
Thanks for the advice Charlie, I’ll be working on new designs soon and will upload the results.
Waterglass is Sodium Silicate, where did you buy it?
What is the use of testing all these fire bricks when you don't give any information for any of them
wtf you talking about? Starting @2:00 he shows what each sample is made of. How could you not see see it?
Just come across your channel, great stuff. I do remember reading somewhere, i think it was hackaday, and they used ceramic or rockwool fibres in there mix but i can't remember how it turned out. Give it a go I will be interested to see the results. Just subscribed.
I sure will .. I have some left over and it does sound like it might work
You prolly dont give a shit but if you're bored like me during the covid times you can watch all the latest movies on Instaflixxer. Been watching with my gf for the last couple of weeks xD
@Boone Jalen Yup, I have been using instaflixxer for years myself :D
Well this is way late, but I am gonna suggest rockwool fibers instead of mesh.
Rockwool fibers are strong, thin, cheap and will expand at a similar rate to the other materials.
replace white cement with building lime and add fireclay from pottery supplies
aluminum oxide grit is very high temp too.
This video is a time saver, informative.
was there any curing time or drying of the test samples.. would that have made a difference?
Your ratios are based upon volume or weights?
do testing without the wire mesh,
bricks only
Informative, but amazingly painful to watch with the soundtrack (I /could/ have turned it off, but I kept waiting for dialog)
An important (to me anyway) is knowing which of the "successful" sample was also efficient at insulative properties.
Just saying
should have offered the recipe
2:07
Use steel wool and make it really fine, that will enhance the structural integrity.
dit you made a strong test with refractory cement ? i need to make a 6,5 cm thick floor with rebar for my pizza oven , is it strong anough ?
This is an amazing video thanks
Hi Dude, I really like what you have tried to do here - found you while looking for some fire brick ideas. However, the really fast "check on temp" when they came out - had massive range, so I cant help but think it might be relative to their location in your furnace? Rendering the concept and experiment a little redundant... I don't want to be down on what you did, lots of effort, but I am none the wiser about the recipe I should use for my burn out oven build. All the best
Did drying time of that mix at least 28 days, after 28 days, did you make slowly heat cure before heating it on high heat..
Will these fire bricks work for bottom and side walls of my chimney fire place, would it release any chemicals into my bbq ?
It will definitely work for the bottom but I'm a little concerned for the walls since the mix is still a bit brittle. I will be working on a new mix in a few days once the fire clay I ordered comes in and I will upload the results. As for the chemical release, I will have to do a little more research on that and get back to you on what I find.
why would you want a bbq to be that hot?
I would have pre-cut the pipe pieces in half and used a piece of tape to hold them together. A la project farm style.
Different expansion rates between wire and cement is the problem
👍👍👍
SO ... ARE THERE NO QUANTITIES ?? OR ARE THEY HIDDEN ?... (OH YES ..HIDDEN AT 2:05 )
I know Alf will have the right answer, you see he's from outer space😉
Niyamai 👍 👍
no voice no watch
I truly hate DIY videos that are not narrated especially when they have generic garbage music!