1935 Graphene In Concrete
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- čas přidán 21. 05. 2023
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If I ever manage to get my own land I will have the most sustainable and indestructible home thanks to your videos. Cheers!
By nature concrete is " Unsustainable
there's the hitch of it all: getting land. found a beautiful heel of a property a few months ago on the market for "$98,000." Steep grade, but that didn't bother me; nowhere to park, but I don't drive a car; 3 acres of forest, and I'd be going under as much as over so most of the trees would remain undisturbed... but it was in a historic area (whatever that means, anyway--there was a mobile home park just up the way a bit) and a 100 year flood plane... plus a few other land surveys and feasibility studies the city wanted me to pay for *before even letting my buy the property* and in the end, it would have cost me well over a million dollars by the time I ever got a foundation in. I'm trying to build a cottage here, not a mansion @_@
@@brucedownunda7054 He does a lot more than concrete on this channel.
cheers mate
@@ThinkingandTinkering Can you look into hemp carbon for batterys...hempcrete has been around for 1000s years I imagine but I'm not sure whether it is hemp powder or hemp carbon they add too concrete...Good thing is its a never ending resource like all plants are so I think we need too start heading back too nature with our posditive tech we can combine n use with nature n realise the unlimited uses there are in natures materials...cheers
This is the breakthrough I've been waiting for to apply to air aircrete...gonna completely change the game of off grid living for insulated aircrete dome homes. I wanted to thank you for your contribution and making this possible!
awesome mate
@@ThinkingandTinkering Also your bulletproof biodplastic graphene reinforced plastic gave me an idea for a business opportunity to create light weight plates for plate carriers for local law enforcement!
I’m not sure you can use a third less concrete (concrete being the cement, the “rock glue”, Portland or otherwise, plus the aggregate, sand, gravel, etc.). Almost certainly, graphene bearing concrete could have less cement, if it can be demonstrated that the aggregate is bound together as well or better than cement without graphene. But almost certainly you will be able to use less reinforcement, either steel re-bar or post-tensioning methods.
Additionally, since the graphene bearing concrete develops the 30-day strength characteristic so much faster builders could likely begin working on a concrete pour sooner (less wait time means less down time which should translate into faster completion).
At any rate, what you have discovered, Robert is outstanding. Revolutionary.
*I worked in the plastic boat industry for some years. It took me a while to learn that, while excess epoxy or polyester resin might make a fiberglass layup smoother to the touch, excess resin (glue, or cement, is the language of builders concrete) actually made the layup weaker. The strength came from the glass and the ability of the resin to bond the glass into a solid whole. Excess resin allowed the glass fibers to sort of “float” away from each other. When, during use as a boat, the layup would “work” (meaning, twist, or stretch, or compress as the boat moved in the water) the excess resin between the glass fibers would begin to prematurely fracture, allowing more movement in the layup until the glass (the actual strength in the layup) began to tear and shred.
To bring this back to the subject of concrete in the building trades, if a foundation can use less cement (by use of graphene) and still keep the aggregate bound together, the benefits go further than simply less cement.
I am not a big global warming worrier, but having lived downwind if a portland cement plant some years ago I don’t like the smell of cooking lime. Less cement in a concrete mix means less stink’em from the cement plant.
Imagine if 3% graphene can translate into 10% less cement to produce a 20% stronger concrete.
If John Lennon were alive I bet he could turn that last paragraph into a ding lyrics.
Cheers, Robert, the Dread Mad Scientist!!
the guy is fooling us his concrete is 58 percent stronger after 7 days only because it cures faster after 28 days you will not notice much difference in strength
i didn't discover this mate - it is just a replication
are you cracked? I didn't discover this - this is just a replication - try reading
The claims were ambiguous. Was he talking about tensile strength or compressive strength? What did less concrete mean? Less portland cement in the mixture or less concrete (meaning aggregate and portland cement)? There are many variables here and any kind of claims like this need to talk about rebar, alternatives to rebar, type of aggregate and potential additives like glass fibers.
@@davefoc in any aggregate the cement is the cement, the glue. In concrete the cement is the portland cement. The strength bearing aggregate is the docks sand and rebar. In a fiberglass layup the cement is the epoxy or the vinyl resin. The strength bearing material is the fiberglass or the carbon fiber. If you want to make a very strong rod take a length of double braided nylon, polyester, or even cotton rope. Weigh it and mix up about 70% by weight of epoxy resin. Put the rope and resin in a bang and vacuum for a few minutes to force the resin all the way into the rope fibers. Pull the resin impregnated rope out and suspend it under tension between two hard points. If you can make the suspension points turn with the rope about 5 RPM so the rope doesn’t sag, all the better. After a few hours when the epoxy has set you will have a very strong, rigid, yet flexible rod. You could do the same thing with Portland cement, but the strength properties would be different.
Thank you so much for revisiting this topic. This method is easy enough I can play with it, and as I'm remodeling my grandmothers hundred year old house for my little family, this will help a lot.
And I think this with things like fiber reinforced thin film concrete will be Really cool, and I cannot wait to see if it can make aircrete more viable- as the bubbles kill the strength, but if you can strengthen the concrete matrix Around the bubbles, it may make up for that to some degree (I want to try to both put it in the concrete part, and try it in the Foam part to see if maybe graphene coated bubbles inside to give those voids some more structure to see if either works better. It will take some playing with, but that's where my mind goes. This may be a cool way to further reduce the amount of concrete you have to use)
Have you tried using a nanobubble generator for your aircrete? Nanobubles last longer and their small size will improve greatly the strenght of the aircrete. That how birds bones are made.
@@The0ldg0at i have not. I shall look it up but I think I grok the concept. What I really want is some way to make hollow spheres so you get the benefit of the air for volume and insulation, but it retains at least more compressive strength than aircrete usually has. Just havent figured out what will do that yet.
Check out the videos on mixing chopped packing foam with concrete.
I had been pondering maybe using a thick resin or thick water glass, foaming That, and adding that to the concrete to see if that would make structural bubbles. no clue if that would work.
Be careful mixing technologies in existing structures, you don’t want to be like all those line mortar and render houses where people slapped cement on them and they have had to either be demolished. Stronger isn’t always better it’s about the right choice for the right job
Concrete hulls for offshore floating platforms.
Dramatic cost saving and it's its own ballast
yep
Yay, masonry is what we experiment today. I'm sure that all these will come together: I'll buy a cow for the milk, use the graphène enhanced concrete, laid out by massive 3D printers, to build the stable and air-condition and run the milking machine with energy extracted by various turbines printed in 3D and other solar converters stored in an assortment of sand batteries and graphène based super capacitors.
😎
ok lol
What about that gm yeast that brews whey?
Sounds easier to clean up after, and feed, no vet bills..
Perfect if I want to sustain my cheese addiction.
Can graphene make rebar unnecessary?
If so, it might be great for 3D printing of concrete by making it easier to get approval and pass building codes.
Rebar gives concrete the tensile strength it would otherwise lack; it appears that Graphene only increases concrete's compressive strength. Frankly, concrete has more than enough compressive strength for most applications, so I don't see graphene being a major step forward, except perhaps in aircrete and a few niche applications.
i don't know but bulding codes are hard to get around mate
Per application, it could provide a reduction in rebar use, but keep in mind “Performance of the concrete is relative to the application.”
Coffee in concrete works really good.
COMPARED TO STANDARD CONCRETE: adding as little as 0.02% graphene into concrete “can” make it up to 35x stronger, 146% increase in compressive strength and 79.5% in flexural strength, while decreasing water permeability by nearly 400%. At the same time also creating enhanced electrical and thermal performance.
But keep in mind “Performance of the concrete is relative to the application.”
WHILE SEEMINGLY SIMPLE - just adding graphene to cement - there’s a whole chemistry aspect that needs to be carefully considered!
Additives, mix ratios, ambient temperatures, mould dimensions, all play critical roles in the outcome quality.
Through a lot of legwork and experience, Robert makes everything seem so simple, but in reality they are very complex theories and science.
MEGA PROPS AND THANKS TO ROBERT!!!
- - -
GRAPHENE AERATED (FOAMED) CONCRETE: has similar increased performance, but the methods used for designing normal concrete compositions CANNOT be used for aerated concrete. They are completely different (like AirCrete is actually foamed mortar).
Hmm very interesting facts!
Reminds me of "HEMPCRETE" which is made like concrete but with hemp stalks crush mixed into it, this Hempcrete then weathers and gets stronger, works in, with time as a pose to normal concrete which gets weaker overtime, wearing out! 😊😊😊
Robert, you deserve to be a wealthy man.
I suspect you are very rich though, because of the value you get from all of your creative innovations. Something money cant buy.
Keep up the fantastic work.
absolutely mate - cheers
exciting stuff! Thanks for putting in the time to getting it tested to have some data to work with.
If I add it to my coffee, will it make it stonger?
It will make you stronger. You’ll be a hard as concrete in less than 7 days.😮
Lol
lol
I was thinking that glass in front of Rob looked like a cup of black coffee the whole video & was wondering if that was the graphene suspension or if Rob was going to drink it!
I think that would be an uncomfortable poo LoL
outstanding robert love it mate i would expect this could be used in tile adhesive as well maybe
i would think so
I’ve been really wanting to try using graphene in fiberglass. Hope you do a video on making graphene this easily that can be incorporated in fiberglass resin.
dry this stuff and bingo
Watch Tech Ingedients
I would be interested in seeing a video of adding graphene to foamcrete and seeing how much stronger it becomes or if it would be negligible. My assumption would be that it would make the foamcrete stronger and stronger, while being lightweight.
That would be something for the Practical Engineering channel's Concrete Series.
I wonder what would happen if you also include glass or carbon fiber against cracking.
for sure
Robert ty for another great project. As i remember Tech Ingredients cautioned about the potential health risks and the necessary precautions one should take when attempting to make your own graphene. Hope this information is of good use too this community.
Wow!....33% less concrete is a massive reduction indeed!.....also, less rebar too perhaps? thanks Rob, lovin all your experiments....very inspirational
It seems to me that in many applications rebar might not be needed at all.
cheers mate
This is very cool, can't wait to try it! Thanks Rob!
go for it mate
What would happen if you added graphene to Hempcrete or Hemp-concrete?
Apparently, there are vídeos about graphene made out of hemp, but not hemp + graphene.
Belinda Carr has tackled hempcrete from an architectural background, so maybe you can suggest this topic to her.
Thanks for asking this question. I was sitting here trying to figure out whether or how it would affect hempcrete’s insulative quality.
stoned
I would think that using an adobe technique would add your tensile strength of the hemp but I would be more interested in the properties of flax(Linen) due to the movement makes the fibers softer and stronger. Good thought!
i don't know but probably the same thing - try it and let us all know
takes me back to my concrete testing days, was so boring
lol
Another interesting video. Thank you.
TY! Super useful! And you know me, I wouldn't say it if I didn't mean it.
that is very true mate
Lol
Fascinating insight into eco solutions to reduce our footprint on the world.
I'm a Mud Man,mixing for a hopper is art,this is amazing science! Awesome Rob,u da man
Dobes(sc) what the blocks called,just fun too say
cheers mate and thanks for the name lol
Awesome! Great testing! Would love to see the same test with double the concentrations perhaps 2 or 3 times over... to see where the benefits start to drop.
go for it
Great video. I plan to add it to aircrete. Having lightweight, strong concrete with high insulation properties must be useful to someone. I'm just going to make raised garden beds. The weight and strength are important for that application, but probably not the insulation properties. Still, it's an avenue to explore. Thanks!
Not my area at all, but AFAIK, plants in pots compared to those on the ground can have a harder time due to overheating from sun exposure to the pot raising the temperature of the earth in the pot, so it may not be so trivial after all...
i made a 7mg/ml graphene dispersion then used that instead of mix water mate
So i tried doing exactly this, and the results that i got were actually less strength than what they generally get. I was extremely disappointed by the results. So i tried making 2 batches with different blender, the results did have a difference in between the 2 tests, but the test results were actually derogatory to what they use without adding graphene
Secondly, i thought maybe my carbon source was not pure enough, then i bought sample of graphite flakes from a well known mines here in India with purity of carbon more than 99%,
i again made 2 batches with different blenders, and then i poured 12 6inches cubes with 4 different proportions of both the batches, and then ran a 7day test, trust me the results were showing lesser strength than what they usually get
FYI i tried on M35 grade design mix in which i added graphene at different proportions - ranging from 0.02% to 0.04% of cement by weight
Can you please share your design mix for the concrete that you made and tested and how much graphene did you add
Also if you can guide where i could have been going wrong
Cheers and Regards! You are doing amazing work!
I wonder how much adding graphene would improve the strenght of Aircrete?
Test it! It's public domain, if you have trouble he'll probably help you via email or something because if someone else is doing the experiment well then it's easier to move on to something else and accept their data; especially for demonstration/prototyping purposes, relative data is perfectly fine for feasibility/evaluation. If the test is done well enough then the data should be close enough to say yea/nay.
I was thinking the same thing. Disputing it wouldn't be a problem. Anc considering soap and blender speed mixing is involved in making both the graphene and aircrete, you might be able to skip a few steps and make the graphene with the foam? Just a wild thought there 😊
Another thought, you probably don't have to worry about watching out the soup from the graphene first
give it a go
Thanks for sharing!
cheers mate
Kudos! Yet another awesome video!
cheers mate
you have such a brilliant and pragmatic mind!
I was waiting for this video. Thanks
awesome
Venture capitalists should be breaking down Robert's door considering the commercial potential of this method.
Why? They can just do it themselves.
@@Mmouse_ So why aren't they? I'd say Robert's broad knowledge would make him the ideal consultant.
cheers mate
yes but they won't
Wow! Carbon capture to graphene to sequestering and adding strength to concrete.
indeed
@@ThinkingandTinkering Two things I'm interested in. One, how would this compare to Roman concrete in terms of longevity? Two, I had an idea for using aircrete, but with CO2 rather than ambient air. I wonder if this could be done with graphcrete, or would we have to make a graphcrete shell with co2 aircrete poured in it?
Don't intend to be that guy, where's the borophene in concrete video?
Sorry, had to ask.
Great stuff Rob, thank you for helping everyone.
You could make a wall using concrete foam and then put a rendering on either side of it with your graphene concrete for strength.
for sure
Very convincing demonstration. I just bought $20 worth of random graphite powder to attempt to replicate your results.
why didn't you make it?
@@ThinkingandTinkering 4 days til it comes in the mail.
What about using the graphene concrete in a foam concrete application? Lighter and stronger and cheaper sounds like a fantastic thing to test.
This is great, add the graphene slurry in it to make it stronger. We also have found out that you can graphene coat sand and add that as an aggregate to concrete to make it stronger. So, my question is what happens if you do both? Will that make it even stronger? It makes sense that it might do so, because graphene wants to bond with itself. That is why you used the process that you did in order to make it disperse without clumping back together. So, would that make the dispersed in liquid graphene want to make a very strong bond with that which is coating your aggregate? If I had a kiln capable of producing graphene coated sand, I think that I would give this a go to find out. Thanks for the video Rob! I find these types of videos very interesting and entertaining. Keep up the good work Rob!
Brilliant!
Open source the future! Thanks Rob!
cheers mate
Brilliant!!
cheers mate
Good Doctor, I remember you came up with a soap solution. There are many people experimenting with air-crete. I'm curios to know your thoughts on a graphene infused soap solution for that process.
Yes you left your discouraging soap statement out of this video and analysis dear Robert
sounds liek a good idea - give it a go mate
Did you only use the center layer of graphene for the concrete? Any chance on a tutorial video for that? Also, would this be useful to aircrete or foamcrete?
Great stuff. Looks like it would be a boon to styrene-crete.
i would think so
I was curious AF about this use. THANK YOU!!!! Fantastic discovery! Next best thing to the supposedly recent discovery of what made Roman concrete so* resilent. Yay Quick Lime! I wonder if the regenerative effects of quicklime would be hindered by gaphine reinforced concrete.
cheers mate
Be very interesting to make concrete foam with this in it!
go for it mate
I thought 30% was awesome 58 % is absolutely astonishing! Whole new level!
cheers mate
Mixing Graphene with Bitumen.
This also gives stronger product.
I’m pouring my own porch in a week or so. Now it’s going to be soooo f-ing strong. Thanks Rob
lol - awesome mate i made a 7mg/ml graphene dispersion then used that instead of mix water
Appreciate you.
cheers mate
Im thinking about making a small shednout back of my house to stire a quite nice push bike in such that ibahvebit to hand for easy access.
Into the base if this, i was considering making a solid concrete block such that i could bury some mooring anchors or a bit of metalwork to secure the bike to into it.
This may actually be quite a cool thing to do.
Do you have a 'recipe' that i could consider?
Also, I saw the protein based extraction method for graphine, however, you neglected to show the isolation and extraction from the resultant mixture in the, err, mixer.
😅
i made a 7mg/ml graphene dispersion then used that instead of mix water and you want to watch graphene drying?
well done Robert very informative and scientific. but will you help me ? if i need some answers??? how to contact
I used carbon black in an experimental masonry mortar and doubled the strength! It filled the microscopic gaps to make a more complete contact.
awesome
Its like every day I have a revelation. Keep up the fire!
cheers mate
Curious if this increase in ultimate (compressive) strength translates to fracture toughness and crack initiation/propagation ? I know first order mechanical assessments usually hit ultimate strength but I think with many concrete structures, the primary failure mode is fracture / crack growth mechanics and so just wondering if anything is known in regards to how dispersed graphene improves those.
yes it is known - there are quite a few papers on it
Can you site any specific articles? Curious about this as well.
A like and comment for the algorithm 🎉 Damn fine stuff Rob
Is there a way to test concrete for durability specific to water? Specifically simulating weather conditions for roads. The contracting and expanding of water that cause cracks and what not.
Will it work reinforce old concrete? Maybe seal the holes from water freezing in the concrete.
no - it needs to be intimately mixed mate
German Company Sonocrete claimes they need 30% less concrete when using ultrasonic mixers. It would be quiet interesting to see a concrete graphen hybrid since the use ultrasonic mixers for epoxy mixing with graphene. This could be game changing
indeed
>> Which of the 5 standard concrete types was the graphene added to?
Does FWG CWM A 32.5N = CEM A 32.5N + graphene? IF so, how does it perform if graphene is added to better concrete?
Also, I'd love to see a structural test of concrete with both graphene AND quicklime particulate added to it (a la roman concrete).
Oh, also, I'd love to see the 28 day for the graphene, to ensure it's not simply drying faster due to some form of moisture wicking effect.
blue circle ready mix
@@ThinkingandTinkering Wow, fast reply! Thanks :D
Looking at building with concrete + steel truss on top. Rebar seems pretty short-lived though. It would be more ideal to use pure concrete walls I think, if they can be strengthened another way.
Unbelievable stuff. Between the burners, gennys and this stuff we'll be all set for the Apocalypse!
lol
I actually used to make those blocks for testing the quality of concrete being used on site.
You didn't mention how you cured the concrete nor the ratio mix.
I do know that the concrete block should be cured in a water bath, so wondering if you did, as it would probably improve the result?
Yes give us your formula and water bath answers please Robert.
Very interested
i made a 7mg/ml graphene dispersion then used that instead of mix water the cured in a water bath
Just start producing and selling this graphite & graphene paste Robert. You have the means, and the world needs people to get good things done, more than it needs to be told what is good to do. Good Speed.
No Rob! We have warp drive next to invent, theres enough doers, we need thinkers/ inventors and im afraid stopping to sell widegts will keep you from that, so dont stop not even for money, Andromeda is next! and no amount of money will get us there, but an idea will.
so are you telling me what is good to do rather than getting it done yourself? In fact you are aren't you? Why don't you get it done mate?
I dont mean that, were all human at the end of the day is the ultimate explaination for eccentricities. Pay me no heed. Fair winds to you.
Hi Robert, this is an amazing process, I wonder how hard it would be to do a polished concrete floor out of this stuff? 😅
dunno mate
Great video, Rob! 😀
Is graphene-based concrete hydrophobic? Are the concrete comparisons for pressure loading only or did you include tensile loading?
I don't think anyone test for tensile strength, it's complete rubbish, all the tensile strength comes from the rebar!
cheers and no it isn't hydrophobic
Robert, what if 2 copper rods were placed in the mold and then pass through an electric charge would the concrete then heat up?
Any ideas on how to compress hydrogen economically in large scale? I've been looking into this for a long time but yet to come up with anything interesting.
I don't remember when all the videos on making graphene, if using an ultrasound cleaner tank was used to brake up clumping more. One thing that would be super usefull would be plasic for 3D printing with graphene. I know just using carbon fiber makes 3D printed stuff way stronger.
cheers mate
You can Mix it with Ultrasounds and Evaporate water with other frequency...
You by then would have Pre Assembled Iron-less Reinforced Concrete Panels to Transport in as Construction Material.
i suppose so mate
Considering graphene is easier to wet from both sides than just one, and charges come in to play at those scales, what about introducing electricity into the mix?
What about inducing an electric current in the dispersion? Or even in the concrete?
Besides setting up capacitors, what else would it do for concrete, or any other dispersion?
Is the trick to getting it to disperse -using another force? Because it’s of it’s two dimensionality? (Nanoscale)
Kind of like Teslaphoresis?
There’s a paper written about how graphene interacts with water, how it essentially acts like a mirror - easier to wet from both sides rather than just one. Is that why it has a hard time dispersing in plain water? It’s 2D nature?
What ratio percentage was the cement to graphene mix??
Wonder if foamcrete or styrocrete with graphene does as well strengthwise.
i made a 7mg/ml graphene dispersion then used that instead of mix water
I cannot even start to imagine the importance of this
for sure
Would it be possible to add graphene to fibreglass? I'm thinking for strong repairs on boats?
What does it do to the insulation qualities? I wonder if it would allow for less concrete in ICF construction.
Amazing! So whats the mix ratio?
I made a 7mg/ml dispersion as per video 1933 and used that as the mix water for the concrete
Help... where in the UK can I buy some approx 150 micron graphite powder - as recommendedin the " blood graphene vid " - I've looked allover, but only come across the 50 microns ?
That's really fantastic, I wonder how it would work out with "foamcrete", that's a mixture of soap and concrete that is full of bubbles, like a sponge. Quite a lot lighter and still very stong. With graphene, it could be both stronger and lighter than the others...
give it a go mate
@@ThinkingandTinkering Seriously thinking about it! I keep wanting to try to make my own little "house 3d printer" that feeds out foamcrete like filament along a large XY plane fed through a flex tube with an auger bit on the back pushing material through. Maybe I'll try it on a small scale first, print out concrete doghouse etc. Thanks for all the great info.
@@MK-lk7nc I send my best wishes sir.I hope you achieve what you want to do.
That's pretty cool I think if I was a boat builder I would build me a boat out of that concrete, graphene and star foam concrete oh, that would be super light and super strong it would probably float just as a brick anyway that was really cool thank you very much
They built boats out of concrete during the second world war. I believe there are some layed up in the marshes on the south coast of England. Sure I've seen a youtube video discussing them and showing them somewhere.
@@Corialtavi yeah I seen those concrete boats to on CZcams but if they're that strong with the graphing they could be the ultimate boat LOL
cheers mate
Have you tried this with plaster? Cassini plaster is quite strong already but it would be really useful if it was stronger still.
Robert was this made in video 1933 or using that method?
And it does not rust. Most of the massive steel reinforced structure we have built will come down in about 150 years. I suspect it would work well with magnesium phosphate cement too.
What is benefit of magnesium phosphate cement? What is strong formula? 🎉
probably
@@BaliFoodTreePlanter It bonds more readily with organic materials and sets faster than portland.
woops for some reason I read this as Graphene in Concert and I was wondering who graphene was... but now I found this interesting video so it was worth the click.
awesome - cheers mate
It would be nice to see if this process would do the same thing with aerated concrete.
It can be used in aerated concrete and has similar increased performance, but the methods used for designing normal concrete compositions CANNOT be used for aerated concrete. They are completely different
I wonder if the dispersion method would work with clay. Reason being to see if it would soak into the ground rather than just leave the clay on the top of soil when poured for improving sandy soils. Liquid nano-clay is one method that exists but its expensive and propietary.
try it and see
I wonder if they use anything like this in the Middle East or China, with the new tallest buildings.
That, or interior and exterior fiber cement panels in construction (like in shipping container homes)
I don't know
It would be interesting to know how if and by how much tensile and shear strength are also increased vs std concrete?
go for it test it and let us all know
Maybe I missed it, but what was your addition percentage? Having a slab poured soon, wondering how much I should add.
there are waterbased resins, it would be interesting to find out how much their strengt increases when mixed with your graphene
go for it
@@ThinkingandTinkering i am not able to do that, maybe it would be intersting for you to make a video about that?
Is there a way to test the graphene-crete thermal and electrical conductivity? It might be useful for applications in sand batteries and other high thermal conditions (e.g. Thorium reactors...). Strength testing is well and good but I am from Michigan and our winters/springs are absolutely brutal on any structure it would be nice to see real world application tested in extreme freeze/thaw cycles the more extreme the better.
well it i pretty easy to make - the tests are time consuming so i can't possibly do them all - give this one a go and share you results
Also from Michigan. My interest is in aerated concrete for the thermal insulation properties, but structural values are also important. There are research papers out there with those details, but it takes time to read through.
Apart from its structural uses, could this enhanced strength concrete be made into paving tiles that could reduce the need to repair pavement? Pavement seems to break down a lot.
yes it could
I've always dreamt of building a cob house and I wonder how cob and rammed earth would behave with added graphene.
dunno mate
congratulations
cheers mate
Those are some pretty concrete results 😂
Out of interest what cement class and mix design did you use for your cubes?
There are 27 common cements in 197-1 standard ranging from CEM I containing no more than 5% additions up to CEM III/C that. Can be up to 95% additions (GGBS in this case and 5% only 5% cement clinker)
Virtually no ready mix concrete in the UK is produced with a 32,5 strength cement
off the shelf ready mix portland blue circle is what i used
Ah ok CEM II A/L 32,5R 👍 thank you I will get some tests done with a CEM I 42,5 and CEM I 52,5 (more common in ready-mix and precast applications when I have some time 😊
👍 good job! 👍
Hello beautiful so you have to vibrate that little brick to get it to settle I think you should use a specific harmonic that way you would set the concrete in the crystal form that you think is the strongest achieving the ultimate strength
ok cheers
And where do you buy 'graphene' for use as a concrete admixture? What is the desired spec and average dimension of each graphene 'flake'?