All About Magnesium Oxide Cements

If you want to have a look at those special videos become a member and join by clicking this link / @thinkingandtinkering
This is about Sorel Cements and non portland cement mixtures as an alternative to portland cement witht the concurrent reduction in CO2 emissions using zinc oxide, magnesium oxide and various additives to create a cement mixture including silicon dioxide,zinc chloride, phosphates, epsom salts (magnesium sulphate) and magnesium chloride

[@N0body247]

This kind of content is why i am subbed. as a kid i hated science, as an adult i love science.. i realize the teacher who bored me... was the problem. You have a way to keep my attention and im learning a ton. Keep going.

[@ThinkingandTinkering]

cheers mate - glad you like the channel

[@Barskor1]

Public education is not about education it is about babysitting so your parents can work to pay taxes and making the government your parent.

[@roberttrimmier3276]

​@Barskor1, while there is something to what you are saying, which also is related to American not having any maternity or paternity leave. I don't babysit anyone. I am a high school science teacher. I teach Earth and Space Science. This year, I am going to teach Environmental Science as well. My pull-out Special Education class is going to learn this content as part of studying Man's impact on the environment. This is fairly technical information and will part of studying the chemistry involved in Environmental Science. I don't babysit anyone, not even the Special Education students. If you walk into my classroom you have to work to earn a passing grade.

[@clintongryke6887]

This is one of your best and most informative (and highly inspirational) videos.

[@ThinkingandTinkering]

cheers mate - glad you like it

[@michaeltucker8645]

I'm signing up for the paid for videos I've self taught myself more in the last 5 years on researching and experimenting myself. Than I ever learned at schools and just recently found your channel around 6 months ago. I have to say you dumb down the process to an understandable level that is such a pleasure to listen to on top on actually preforming these explanations and experiments. I wish I had a science/chemistry teacher such as yourself in school I might have been more attentive instead of so bored about it all. Credit to Dr Young my chemistry tho he was far ahead on most other at the school.

[@GoldenAgeNow]

This is excellent! Thanks for providing education on these types of portland cement alternatives.

[@Doncious]

RMS I have been following your channel now since at least 2014 and I am fascinated by the range of materials and ideas your explore, thanks for all that you share!

[@ThinkingandTinkering]

Wow, thank you

[@poptartthecat4038]

wonderful video! I came here after watching kiwami japan's seawater knife video, where they extracted different salts and reacted them to make a sorrel cement. I wanted more information on the process and this video is perfect!

[@jamesdonnelly8888]

I absolutely love all your videos, and this is no exception. Now I feel I need to go and find out all the properties of these cements. Lots to learn! If there are formulas which can cast well that would be interesting. I wonder if super plasticiser will work, what accelerants can be used, etc. Just today I received my shipments of super placticiser and calcum chloride, and was casting white portland with the kids, and it's a fabulous medium. The surface detail is insane when casting, and the set time is about an hour with a bit of the calcium chloride, plus it's a lovely white. I'm now thinking that some of these recipes must yield a harder cement though, and the billiard ball thing leads the mind to casting busts with a good fake stone appearance. You are a treasure trove.

[@Mikey42287]

Wonderful information. I greatly enjoyed your teachings yet again Robert. You never disappoint. 🎩 Thank you.

[@ThinkingandTinkering]

cheers mate

[@brandonlaird6876]

This is absolute gold! I love how your videos mix (pun intended) just a TINY bit of numbers as an aside to the IDEAS. Ideas are where creativity sets (pun intended) and you end up with a concrete (... yep) understanding of the principle of the matter. I came here as referred by your Sorel Cement Battery video, but I don't know how/why I missed this one since I'm subscribed and all. Anyway, keep up the good work, and keep your foundation (you thought I was done with puns lol) of enjoyment and exploration of scientific principles.

[@ThinkingandTinkering]

lol - it's really the idea that matter mate - well - that's what I think

[@electronicscrapper4956]

Thank you so much for the information. I'll have something to play around with this weekend

[@ThinkingandTinkering]

go for it mate it is fun

[@markhonea2461]

Just now watched this presentation. I have been considering different mediums for sculpting, or putting into a rough mold and then finishing by hand, and I have a serious interest in these compounds as they are very much in the category of characteristics of material simply perfect for my little ideas. Little ideas often are the thought-child of future vast industry. Or perhaps I should say 'thought parent'.

[@LennartVanBolderick]

Absolutely amazing. Immediately became a member. If I want some in depth professional advice, how to best reach you? Thank you.

[@strongholdinc1843]

AWESOME VIDEO!! Very helpful and love that you mix them live. QUESTION : Which version is has the highest Water Resistance? Would that be the Silica Water Gel ? Also, which do you think has the best impact resistance? Working on a project. Would love some insight. Also, any other better ones for these 2 things you have found? Water proofing and impact ?

[@kerembyl]

Hi Robert, many thanks for your effort to make this video. Your demonstrations were very useful but i have a question, do you know how much temperature can silica-magnesium oxide mixture can withstand? Thanks.

[@nancysmith9487]

Mr. Rose Thank you for sharing, great job

[@ThinkingandTinkering]

Mr Rose?

[@nancysmith9487]

London reel, mr.brian rose Talented talk show plus mentor. When get chance maybe listen to one. Good job sir...

[@greatbilby]

Very informative. I have been looking for info on magnesium Oxide for a project I am working on.

[@benthere8051]

Thanks, Robert. That is good information.

[@ThinkingandTinkering]

Glad it was helpful!

[@infinitelyuniversal2390]

Very cool, ive been working with Aluminum oxide (do to extreme hardness) and sodium silica, makes really hard cement stone like material but takes weeks to fully set.

[@ThinkingandTinkering]

to be honest mate so does Portland cement - we are used to it turning quickly but to really set you have to keep it damp for about 2 weeks to properly cure

[@infinitelyuniversal2390]

@@ThinkingandTinkering really cool! i had no idea i was just playing with ideas* Thanks for Wisdom

[@nancysmith9487]

Thank you for your tutorial... nice painting techniques to mix. Cheers

[@ThinkingandTinkering]

lol - I paint as a hobby

[@shamblendavidson8166]

Always interesting videos. Very informative. I think this is the method that geoship uses, but they add hemp fibers for strength.

[@jonballard4453]

I believe you may have just blown the lid right off of the secret that has eluded me on the method of manufacturing of japanese synthetic whetstones or ceramic sharpening stones. I believe it would only require the addition of some ultra finely screened aluminum oxide. Although I believe the stones in referring to are actually fired to harden them. But thank you and if you know how these stones are actually made plz do share thank you and keep up the great work.

[@joshuaobrien6137]

fascinating stuff! Would like to see you explore roman concrete now that we know the recipe(weirdly easy to make given that we lost the recipe thousands of years ago). Also curious what the properties of these cements are and what would happen if you doped one kind of cement/geopolymer with another(its done with metals to give them different properties and I'm curious if it extends to concretes) or if cement lamination(layering different types of cement) would have any benefit.

[@THERMOSTONE]

Quite interesting to note that Fumed silica and Mgo mix. Mgcl2 sure does have advantages and disadvantages ... Price as comparing to fumed silica is very cheap but Mgcl2 does absorb much humidity and also can cause rusting of non galvanized screws etc.

[@konavader]

Aloha Mr. Smith! Have a good day.

[@ThinkingandTinkering]

cheers mate

[@guangyizhu5232]

"mgo geopolymer" lead me here, subbed, very helpful

[@SumFugaziSalt]

Great info, thanks.

[@tebbi67]

I think that all of us who always look here should get together and nominate him for the Right Livelihood Award. Ant THX for this Video.

[@ThinkingandTinkering]

lol - cheers mate and thanks for taking the time to say that

[@corresandberg]

Awesome stuff. Never heard about this before. But I have followed Dr Joseph Davidowitz work and also watches his yearly videos regarding Geopolymer. I don't understand fully what he is talking about since I am a layman, but I find it so interesting so that I still listen to it. I think there is some parts here that are same and others not. Geopolymer is "stone" and resist water really good, hardens without a lot of heat (no need to water it when drying). Robert, this video was super interesting.

[@ThinkingandTinkering]

so glad you liked it mate - cheers

[@technosaurus3805]

Magnesium oxide is used in many aircrete formulations too.

[@jonnyde]

@@technosaurus3805 I was wondering it that would work - no you know if those mixtures stand up the elements (rain etc) or do they require a special extra coating to weather proof them ?

[@technosaurus3805]

@@jonnyde I've only seen it used encapsulated in walls or with stucco on the outside and plaster on the inside. It has good R-value and sound attenuation characteristics though. Honey-Do-Carpenter's channel does a DIY version using Portland cement and a foaming agent.

[@icebluscorpion]

Your channel is clearly underrated, keep it up pal! Cheers. How high of a temperature can handle all those types of cement? Could I build a refractory furnace out of it? Could I also foam it with co2?

[@petergambier]

Extremely interesting stuff thanks Dr Rob, I work with lime putty so your film has led me down some intriguing rabbit holes this morning at 3am. I also read about Coade stone, a ceramic stonewear 'stone fired twice' as used in many stately homes and Buckingham palace whose original mix was patented in 1722 by Richard Holt but later the clay recipe was perfected and the firing tweaked by Eleanor Coade in about 1760 where her company ended up being the sole artificial stone manufacturer. I also read that when Sorel cement is mixed with the magnesium it's the best kind of barrier for radioactive materials. Globally we make about 4 billion tons of concrete every year. 1 ton of cement produces about 3/4 ton of co2. Lime mortar produces 80% less co2. Geopolymer concrete uses about 95% fuel ash, sets at room temperature and takes about 24 hours to fully set and gives off 75% less co2 than cement.

[@ThinkingandTinkering]

very interesting stuff mate especially the code stone - thanks for posting

[@charlesdickens6706]

.....is it cos they factor for lime absorbing co2 during it's decades long setting process .locally here the lime mortar appears to have been a failure in construction back to the war years , chimneys and walls crumbling . I reckon the mortar requires a dry climate to work .

[@keithcookman2918]

Great imagination shared👍

[@ThinkingandTinkering]

cheers mate

[@cygnusrays]

Just what I’ve been looking for, thank you! Are you able to tell me would the silica mix be suitable to use to render garden beds (inside and out), or should I stick with the Ammonium Phosphate mix?

[@mohyolkbouchra3907]

Mr SMITH.😍🙄😚.YOU ARE DIFFERENT ...💆‍♂️👍

[@ThinkingandTinkering]

lol - cheers mate

[@mikeflight9]

Excellent information as always. Chemistry is an amazing subject. Brilliant channel. 👍👍👍🎸🎸🎸 Don't see the manky cup today. 😆

[@ThinkingandTinkering]

glad you like the channel - my wife nicked it to give it a wash lol

[@saraprice3070]

Wonderful video! What would happen if you combined the zinc oxide with the fumed silica? Could that be a strong, stable, economical cement that could withstand water?

[@PaulPassarelli]

"Magnesium Oxy-Chloride" as they call is has been used as a lapidary cement for as long as I can remember. My 1970s era 'rock tumbler' came with a small quantity.

[@SkookumChoocher]

Great video, as usual, thank you sir :). May I ask you also mention some more mixtures, especially ones that are heat and shock resistant, i. e. would be suitable for repair of the inside fire-resistant layer in old ovens or fireplaces? Thank you and keep up the great work!

[@ThinkingandTinkering]

just have a look on google scholar mate - you will find a ton of recipes

[@jonballard4453]

@@ThinkingandTinkering could you name some sources to procure some of these oxides? That would be very helpful. I've been trying to figure out how synthetic Japanese whetstones are manufactured and I think you may have just given me my answer. And interestly enough I just broke my 12000 Grit synthetic Whetstone so I'm thinking since it's already broken I could take the pieces put them into a blender grind them up really really good and then add a bit of magnesium oxide and a bit of magnesium chloride and possibly recast the Whetstone. Thank you

[@olindatime8697]

Thanks for a great video. Is the salts in the cement a corrosion risk if it comes into contact with steel?

[@kathleenjones9207]

Thank you for such a wonderful video. I was wondering if you could add laurel sulfate and air to make fire retardant concrete insulation?

[@TheMattjudo26]

Man I love your videos!

[@GmanBB]

Excellent, Robert. Make videos how to make ceramics with aluminum oxide. It will be really useful.

[@ThinkingandTinkering]

Great suggestion!

[@Barskor1]

Like a trip to the circus and Christmas all in one! thanks, Robert!

[@ThinkingandTinkering]

lol - cheers mate

[@tobiassorensen7739]

Very informative video, thanks. I am a restorer I Denmark and read about a danish artist who went to Paris in 1930 when he returned back he started to make cast in something he called "metal cement" do you have any clue of what that could be ? Many regards Tobias

[@carinal3768]

this was amazing.

[@pblackcrow]

Robert, what about adding hemp to the last one you did and/or something like a hard epoxy?

[@Primer595]

Great Video Robert! I wonder if the leaching problem could be mitigated by coating the cement with a waterproof material? I know that the Dutch use an 18kg mix of a polymer (recycled plastic bottles! )to a ton of crushed rock to make weather proofing for sea defences such as the final layer on sea walls. I think it was the Romans who discovered cement that we use today. I believe they used weathered lava or pumice stone. Thanks I learned a lot. I wonder if the coating I am suggesting would use adsorbtion or absorbtion to stick to the surface? I suspect you would know.

[@ThinkingandTinkering]

for sure mate

[@shiekhk55kashifikram88]

Excellent

[@THEOGGUNSHOW]

Very interesting

[@chrisradford6955]

Which one of these cement types would make for a good refractory; replacing alumina-based insulating fire-bricks?

[@cyrus3696]

I did't think Cements could be so interesting lol thank you

[@ThinkingandTinkering]

lol - I know eh - lol

[@fritanke2318]

It is cheap and easy to get hold off. I'm afraid thats not the case where I live. But as usual, great stuff.

[@ThinkingandTinkering]

that is a shame mate - quite a lot of these materials are like $10 dollars for 20kg or so in most places

[@lukebrown6913]

What are the properties if you mix mag oxide and water glass with and without powered cat litter?

[@beholderer]

Hi, Robert. Does the last mix (Fumed Silica with Magnesium Oxide) is 100% waterproof? Does is resist leaching?

[@revscott58]

Hello Robert. How would the mix of magnesium oxide with fumed silica work if you used sodium silicate instead of water? It might create an even harder cement.

[@frankm4736]

Excellent work mr. smith!!! I have been doing cement experiments myself!! It’s amazing; people like bill gates with endless cash, time and resources- is tackling sci-fi like solutions in low carbon emitting industries. Why aren’t more people putting an effort in on cements??? With cement being the #1 carbon emitter in the world.

[@ThinkingandTinkering]

it is fascinating mate - but folks tend to work on what they see and when something is all around tbh we just stop seeing

[@clintonlau5826]

Rob, is the material conductive or can it be made conductive by mixing in carbon or wood ash something to do that and applied to a current collector foil type plates to use in a battery.

[@comrademessenger]

Great vid!

[@ThinkingandTinkering]

glad you liked it mate

[@dummieall3150]

150 years ago electric arc furnace liner? That’s why I’m looking into magnesium cement

[@JavierChiappa]

is the last one heat resistant/refractory? The one with the silica? I'd like to mould some sort of ceramic/geopolymer to hold heating elements in my kiln. Maybe this paste will work?

[@DeliciousDeBlair]

Now there is a magnesium/aluminum/silicon glass/vitreous compound being used for both high intensity lasers and ballistic glass type applications [transparent vehicle armor].

[@ThinkingandTinkering]

is that right? - very interesting - cheers

[@richardblanchard2743]

I have seen some videos that describe how to use an expanding cement product to break rocks. You drill holes into the rock, pour in the cement and after a day or so the cement expands and breaks up the rock. Do you have any idea of the composition of this type of cement?

[@ecsyntric]

how about embed a nichrome wire into MgO cement and make a non conductive hotplate

[@randycrowe4978]

awesome job yet again. from what I understand, the great wall of China used a cement that was pure white and extremely durable. Was it one of these cements? Thank you very much, God bless you and your family.

[@ThinkingandTinkering]

may well have been mate - China is the world's greatest producer of magnesium oxide

[@NorthernKitty]

Construction varies based on the years it was built, but it looks like during the Ming Dynasty they used a mortar made of glutinous rice flour and slaked lime. It was an exceptionally strong mortar, even surviving earthquakes. (Edit:) Looks like the "secret ingredient" to the strength was the amylopectin from the rice flour. It allowed the mix to compact exceptionally well.

[@THERMOSTONE]

Yes Randy they used Mgo for binding in between the stones and it still hold good

[@lunacyworks]

@@ThinkingandTinkering many Dams in china were built using a MO base cement

[@NorthernKitty]

This makes sense - Magnesium Oxide gives me a concrete stomach (as an antacid) so why not use it to make concrete? 😋 Aside from aiding in the ease of mixing, I imagine adding water to the fumed silica makes it easier to weigh? It's so light it virtually "floats on air", but I imagine adding water would help "weigh it down", and then you just need to subtract the weight of the water you added.

[@ThinkingandTinkering]

that is pretty much what I do

[@THERMOSTONE]

@@ThinkingandTinkering Thanks Robert , we make Mgo boards and find it very difficult to work with Mgcl2.. Will try the silica formulations but its going to cost more... Can you suggest whats best to make a Mgo board

[@kde5fan737]

Just to get ahead of anyone thinking the phosphate cement is a good idea for large scale use, it isn't unless we find A LOT more deposits of phosphates/phosphorus. P is the main component of residential waste streams that is actually worth recovering due to the cost & availability of global deposits, and we also usually get the benefit of recovering potassium at the same time.

[@philipvernejules9926]

......even been concerns for continued availability of sand. China for example produced and used more concrete in a decade than USA did in over a hundred years .

[@ThinkingandTinkering]

I did mention that in the video mate - not the China bit - but the phosphate lock for sure

[@ryanlebeck259]

Cast the cogs for your gears using this method and you will have stronger gears for your projects. Timing belt gear molds using this method would make for stronger materials.

[@ryanlebeck259]

Use a caulking gun to extrude the cement and you could fill a mold in a jiff. Add graphene and you have an extendable material for molding.

[@ClownWhisper]

tell me something Robert is there a stage of setting up where you could make designs in it without crumbling it or does it get more brittle and crumbly is it sets up because this might be a perfect answer for me making stamps for pottery work

[@ThinkingandTinkering]

it will cast and hold detail - yes - very interesting idea mate

[@SustainableCraig]

There was a recipe mentioned in the vidoe using mgo, borac acid, and phosphate. Does anybody have measurements for this recipe? Also are there recommendations for sourcing the phosphate in the US?

[@carlospinheirotorres9499]

Thank you! ♥️

[@gnuddi]

I wonder if it's actually silica fume you're using rather than fumed silica since there are several articles out there describing the use of silica fume for cement but almost nothing on cements made with fumed silica.

[@htannberg]

Excellent video. I wonder if by adding graphene or carbon nano tubes if it would give it some better characteristics.

[@ThinkingandTinkering]

you could try

[@thagrit]

could you use sodium silicate in the magnesium oxide cement?

[@martynjones973]

My daughter at Veterinary uni confirmed its used for horses because some pastures might be low in magnesium so they get supplemented with magnesium oxide, it’s easily absorbed and helps neutralise their stomach 👍

[@nr7000000001]

The big advantage of using these cements, is that you can mix them with organic dirty soil. So you can use the soil on site, so you use material that's already there! Just mix it in in the wet ground, that makes it cheaper and easier. With portland cement you must use very pure washed sand so you can not use what's there already. With portland cement everything has to be bought / transported / removed / supplied.

[@GriffenNaif]

So it would be a good match for Earthen Brick?

[@nr7000000001]

@@GriffenNaif I haven't tried, I am no expert. Can only say what a huge advantage that would be to the traditional 'buy everything' method.

[@GriffenNaif]

@@nr7000000001 agreed less buying

[@GriffenNaif]

@@nr7000000001 I see it being used as airkrete and someone answered below huge advantage that you can use it with dirty soil.. "The big advantage of using these cements, is that you can mix them with organic dirty soil. So you can use the soil on site, so you use material that's already there! Just mix it in in the wet ground, that makes it cheaper and easier. With portland cement you must use very pure washed sand so you can not use what's there already. With portland cement everything has to be bought / transported / removed / supplied."

[@shohagpaul2491]

I am from Bangladesh. Recently I'm working on Magnesium Oxychloride cement as part of my MSc thesis. Unfortunately, I'm facing some problems while using MgO powder, MgCl2 and water. As first step, I made a solution of Magnesium chloride hexahydrate by distilled water where molar ratio was 1:13. Then I mix it with MgO powder of molar ratio 7. But, by mixing this way, I could not make any paste of cement. It remained at powder level. I further increased water upto 18 mole. But no change in the condition. That's why it was not possible for me to give shape by mold. Now, I didn't understand what fault is going on actually. I am mixing as per instruction of paper, but not finding the expected result. (Mass contect was =MgO: MgCl2.6H20: H2O= 50g: 36.23g: 41.78g = 7: 1: 13). If you help me telling what is wrong here, and tell the actual mixing ratio. Then it will be very helpful for me. Thank you

[@beholderer]

What about using Calcium Oxide and Calcium Hydroxide with Fumed Silica? Does Anyone have tried that?

[@philipvernejules9926]

...........Thanks and I'll try some of the things you've outlined. Some version of the zinc oxide cement was or is used as a temporary filling in dentistry .locally I haven't seen lasting results where lime sand mortar was used in building work. The work being good work but the mortar being a letdown . Perhaps some critical factor was lacking in the formula. Portland cement for mortar was rationed during ww2 and I've seen many structures in recent years that needed to be pulled down. The theory was lime mortar strengthened with time due calcium carbonate crystals formation cos of co2 in atmosphere ..I think co2 conc in atmosphere has to be just right and we've upset the Goldilocks already .

[@ThinkingandTinkering]

nice one ate - I didn't know the zinc oxide formula was still used - that is interesting - cheers

[@golddecor9545]

Hello, Can you tell me to put magnesium sulfate in place of chloride?

[@clintonlau5826]

/ Rob , is that material conductive or can it be made conductive say mix in some carbon or wood ash something to do that and applied on to a current collector foil or mesh plates for batterys.

[@katherinerobert2062]

I love all your videos Mr M-S, so interesting and practical. But you can never see what your working on. You need a close-up, cutaway camera. All we ever see is the mid shot of you, which is great when talking to the viewers but rubbish when we want to see the mixtures, chemical reactions etc. It is such a shame that we do not see anything your working on in detail, it would add so much more value to the videos. Also some quick graphics of formulas, compounds, processes, recipes etc would also be really helpful. And of course shooting in 4k would give the videos a beautiful clarity. Obviously cameras, lights, editing/graphics, audio gear etc etc cost money, so maybe consider doing a few fundraiser live stream, ask-me anything sessions. This sort of thing has worked for other You-Tubers to raise finance for gear and I for one would be willing to donate if it helps you to improve the quality of your output. All easy for me to say of course! but I really love your content and presentation style and I believe with a little higher production value the channel could really benefit.

[@katherinerobert2062]

Silly me, just watched the above video and guess what? you have an overhead camera..Doh! That is new though???

[@beholderer]

Hi Robert, I have got a question. If the reaction takes place when water is added, then, should we consider these cements "hydraulic cements"? Another question: Wouldn't it be better if you mix the 2 powders first and then add the water? Specially with the last one, the fumed silica with magnesium oxide, as dispersing the fumed silica in the magnesium oxide first will make it more workable once you add the water. Thanks, Rob.

[@mudslinger888]

Will the Mg cement be useful for lining a foundry, kiln, forge, rocket stove. Or only maybe a pizza oven temp range? Max temp? Durable?

[@philippearson2b-art960]

any idea's regarding high temperature resistance.

[@samerabdulhadi9502]

Just to ask Is it possible to have mg sulphate with out chloride ? Thanks

[@mikehewitt1253]

Hi, would using Water Glass with the MgOxide work? Would it also then be waterproof and not leach or weaken?

[@topaquashop353]

is mgo + silika still good shape in long exposure on water?

[@aaknuu]

Could you do a version with a small ratio of graphene and compare the strength difference.

[@ThinkingandTinkering]

lol - mate - you must know me well enough by now to know what I am going to say next lol = great idea - give it a go and let me know how you get on

[@DanA-nl5uo]

Robert I can't help but be reminded of the aquion battery which used magnesium oxide and salt water as two of the materials. It just makes me wonder if you can make a sold state battery out of these cements.

[@ThinkingandTinkering]

pseudo solid for sure - actual solid - don't know

[@DanA-nl5uo]

@@ThinkingandTinkering I am willing to bet most wouldn't know or care the difference. If the battery would not leak something toxic in an impact failure and not burst into flames there should be applications that make since. We just need to get to a point as a society where we don't demand a single solution to all peoblems.

[@ThinkingandTinkering]

@@DanA-nl5uo spot on mate and I agree with you

[@richardsandwell2285]

This is so interesting.

[@ThinkingandTinkering]

I agree mate - cheers

[@arielkozak]

Would this be good for refractory purposes?. I'm making a metal foundry and I'm looking into making my own fire bricks

[@xdgaming6127]

can you use it as solid state electrolyte?

[@deltonlomatai2309]

Have you tried the clay and ash cement that some people are making on the youtube?

[@stevemickler452]

If using magnesium oxide and magnesium chloride; I wonder if these can be made from the brine left over from desalination. I've been thinking about how to build OTEC plants to make the desert areas of the oceans bloom by pumping up deep nutrient rich water to soak up CO2.

[@ThinkingandTinkering]

ambitious idea mate - good luck with it

[@lunacyworks]

A UAE group made one called Magnacrete which used the by products of desalination.

[@garethrobinson1729]

This is so detailed to detailed for me IV been looking for a fire cement for a fire pit could someone please put me in the right direction

[@C-M-E]

I'm actually doing a forge/kiln in the coming days and probably got on this vid due to finding an old refractory brick video from the 50s, which showed how they made magnesium oxide/chloride alumina refractory bricks for furnaces. Personally I've settled on a mix of sand, silica powder, aluminum oxide and a inner wall of silicon carbide for the face coating (as I have all these presently) and plan to use sodium silicate as the binding agent. While the MGo idea seems like it'd work quite well with some high temp additives, getting enough in large quantities--even though the raw materials are stupid cheap--shipped to the house would cost an absolute fortune, so I'm going with my first plan. I also found a 94 page thesis from 1949 on phosphoric acid bonding to refractory materials and am reading through that looking for clues to aid what the kiln project is being built for, UHTC research. So much forgotten knowledge from the 'dark era' of scientific time that you have to really butter up your google-fu to find it these days, which is where I find so much value in Robert's videos in condensing that into usable chunks!

[@garethrobinson1729]

Looking a strong fireproof mix that will be able to take the weather I'll be watching the kiln for sure thanks

[@nitrousman8882]

Have you used these as refractory cements?

[@nickceulemans1500]

As an architect I am always looking for improving technology and materials. I came across your channel via an interest in hempcrete... the downside is the lime which is very co2 intensive. Could this new cement work as an improved hempcrete?

[@charlesdickens6706]

......it's all energy intensive .The romans had to collect n strip timber from all over the Mediterranean shores n hinterlands to fire up their cement production.

[@MisterRorschach90]

For a short time while working on a ballistic armor project and realizing how expensive those ceramics can be I did a bunch of research into specialized concretes used for ballistic protection. I tried to use those concepts but never really got anywhere. Always too heavy. But I still think it could be a good idea.

[@justinw1765]

Check out crystalline nanocellulose. It has a lot of promise in that area--especially so when you carbonize it and blend it with epoxy, Titebond III, or similar. I'm curious how the borax+wood glue plastic, using the former as a filler would work?

[@ThinkingandTinkering]

that is interesting for sure mate

[@suyashdhaygude625]

Is there any research paper on it

[@deltonlomatai2309]

Have you heard about Rosendale cement?

[@mikehewitt1253]

What about Aluminium Oxide? Fly Ash, Foundry Ash? Mixing with well graded waste glass for durable concrete?