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- เผยแพร่เมื่อ 5 ก.พ. 2025
- Concrete's main ingredient is responsible for 7% of global man-made greenhouse gas emissions. CarbonCure has figured out how to trap CO2 in concrete and make it stronger in the process.
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Concrete here concrete there concrete everywhere...
quantum chicken - damnit, now there is concrete in my green eggs n ham !!
everybody is friends with everybody
@@logankincade661 random=funny
Can you be a bit more concrete?
This is the type of reporting we need. Real problems, real solutions
Yes, if it is true.
So do trees
They are working on that too. CLT, Cross Laminated Timber is being used to build skyscrapers now. The building codes are being updated so it can be used more widely.
A major university, I think MIT, is also working on dissolving wood way and leaving some sort of crystal structure behind that is much stronger than steel.
yeah i know right. Buildings provide homes and jobs, what do trees give us? Just the oxygen we need to be alive!!!
Stuff: Plus tree free streets gets blistering hot during summer, and soil without tress eventually turns into a fine dust. Most cities severely lack plants and trees, and it influences everything from long term habitability to mental health.
Thank you!
Trees produce less than 1/3 of the planet’s oxygen. Not saying we don’t need them. Just sayin :)
This reporter behaves more like a model.
Their jobs are similar: to attract and retain an audience.
Its CNN, what do you expect?
This is awesome! Saw the scientist that created this a few years ago, it’s finally being used.
should be more worried about the sand issue can't just use any type of sand to make concrete
Do you think crushing the round sand can make it jagged enough to use for concrete
Cant just use any water either 👀
We are running out of sand and unfortunately its an issue that isn't really talked about much.This video explains it perfectly: th-cam.com/video/E0jfn61FTGQ/w-d-xo.html
Volcanic ash my friend little to no sand when useing volcanic concrete there a reason why romans building lasted 2000 years and modern concrete cant last 50 years
Jaggsta
ayyy ive seen that sand video too bud!
3:25 Is that a pothole? Outside a concrete factory?
I was skeptical with the CO2 emissions, but "increases the compressive stress with lesser concrete" 😱 oh boy you have me!😍😘😍
Basically it just speeds up the carbonation of concrete, getting you strength today that would take 50 years, meaning you can use less cement.
@@seigeengine imagine if you add flash graphene into the mix too.
This should come as law for everyone making concrete and government should help these companies to get necessary technology to do this
sounds like another way to jack up the price on concrete.
Jaydaytoday Jayjay didn't you hear, the prices equal themselves out pretty well
Obviously you weren't actually listening and literally just waiting to make something bad out of this. Even if the concretes price goes up a little bit because of the process, it's worth it.
phuck ewe yeah it does cars don’t cost as much as they used to, same with TVs, Plane Travel I mean probably loads of other areas even in smart phone s
Well the price doesnt go down because they give you more/better for the same price
No, if the prices increased they'd go out of business when their competitors didn't do the same thing.
How do they source their c02
Absolutely genius!!! This is brilliant! We need more innovation like this!
Year 2021, update on this pls
Well, what's the new compressive strength? And is stronger also more brittle? There are a lot of questions here to me...
I am sure the concrete cures more quickly but I doubt the other claim, that it is carbon negative.
The beneficial point of the product :
Less cement needed = less heating energy needed for production = less CO2 in the end.
Faster carbonation by CO2 injection system = no time to feel the heat of on going circulated CO2.
The natural carbonation will take about 30 years until it's neutral, but on those 30 years how many building will be build? How many CO2 will be emit? The absorbtion process way way more small than the emition, so the CO2 from concrete over the world will be circulated forever but from different buildings time to time.
Who else jumped in your seat on the slow motion butt shot. I was like yassssssss🤩
Not that this doesn't help, but we need to use hempcrete. Is there any way to combine the two? Since hempcrete already has a net negative.
No.
Hempcrete is not structural, it still needs to be encased in lumber or concrete. It is renewable, rot resistant, fire resistant, etc. though.
So what happens when the buildings have to come down does the C02 get released then 🤷🏼♂️🤷🏼♂️🤷🏼♂️
Wouldn't the alkalinity decreases due to presence of CO2 thus increasing the chances of rusting
ishan agrawal yeah, but passivation occurs pretty quickly as it sets so that isn't a problem.
No, actually. The CO2 is consumed sufficiently in the process that it doesn't affect alkalinity.
Not only does this diminish CO2 levels in our atmosphere, but this will also help with sand mining. Sand makes up around 70% of concrete and with the mass amounts of concrete being produced, sand mining has become a huge industry. What makes this CO2-concrete mixture so phenomenal is the fact that it turns the CO2 into a particle that replaces some of the sand within the mix. Hopefully, this technology will advance so far that it'll end up replacing most of the sand within the concrete so that humans don't destroy animal's natural habitats and in-turn making an unpolluted environment due to the dwindling CO2 levels from this process.
Wow, very cool. Thanks for the report! Great job all the way around. Topic was amazing. Reporter did a awesome job as well. A++
2:36 ok she just peed.
Badhon& Mike what?
B Mac ok and, she didn’t pee in the video
MrAsiann how do you know, it's under her pants
Anthony James no way, where is it.
She could pee on me
Does this allow a house to reflect back the heat observed during the day time
HempCrete plz.
Hempcrete is not a structural material tho.
I see a big mistake or forget. Where the CO2 come from? From the process of making cement.
If not. It’s useless...
finally a comment that read my mind, I feel like this is a big prank on everyone
Thanks *Bro'* !
No, it's entirely irrelevant where it came from unless it was produced specifically for this, which it wasn't. CO2 is captured from other industrial processes for use in a variety of things.
Co2 was captured while burning coal to make electricity. it could be carbon negative if concreate was made with a sustainable energy source and then add C02
Of all uses for CO2, I will place my bet on CO2 to concrete...it can scale, it develops something monetizable and it locks CO2 for a long, long time...
Good going CarbonCure, all the best
long term may be kinda bad. what happens when the concrete degrades will it leech out? or does it chemically bond with the materials?
I think she peed herself there lol
She sharted too.
My up
Whats the shear strength impact?
I noticed they addressed the compressive strength and didn't mention the shear strength. Interesting..
Not really.
This is really cool. It should be adopted widely if we want a little extra time on this planet to help figure out how to save us from ourselves.
This is awesome 👍👍
awesome reporter, keep doing this amazing job, she looks very inside into this subject, natural way
She just tried not looking dumb...
She just repeated what carbon cure told her... She didn't do her job. She just gave carbon cure free advertising.
Unmannedair Exactly - this was just an advertisement. See my comment above for the facts and figures.
Concretors. ...we will lay anything.
@Thunderf00t what do you think about this one??
Huh.. We tried it at csc.. and still going to try it. And .. 2646.. yup.. that was my truck for a while in sc.
So do you will change concrete on/in coal factories?
No steel reinforcement would still be used in concrete even if this wasn’t the case. There’s a lot more to it than that. I would say they’re principally pared together because generally concrete is good in compression, but bad in tension, and steel is good in tension, but bad in compression. Having the same coefficient of expansion is just neat even if it wasn’t the case I’d imagine that it would be ignored for 90% of the time because it the difference in expansion and contraction would be too small to matter. In fact steel reinforcement does expand as it corrodes and is one of the causes for chunks of concrete that you may see flake off the other is salt which promotes a chemical reaction in the concrete called secondary ettringite formation.
It's a big deal here in Coachella Valley California, as hot as Death Valley. Far too much concrete is used, external to buildings and no one has this tech that I know of. Time to call around and find out more.
Fun fact: if all urban spaces were made white, that would reflect enough light back into space to entirely counter-act global warming.
and ... how it will behave in case of fire in the building?
It's amazing we haven't found/invented a synthetic cement replacement yet.
This is so amazing!👌🏻
"This is the brains of the beast here"
Good idea. However, will the CO2 be released again when the mechanical use of for example roads destroys the material?
The creation of cement releases CO2 -- and we need more ... th-cam.com/video/RLnQo8l-BHc/w-d-xo.html
If I'm understanding the video correctly, the CO2 is converted into a mineral during this process, and so the Ferrock breaking down doesn't re-release the CO2
Great job thank you for all this work. Great job everyone, for tomorrow
Concrete does pull CO2 out of the air to cure and harden over a short period of time. This is the chemical concept in concrete structures. As time goes on other chemicals can penetrate into the concrete and weaken it or even toughen it even more. This "technology" is not affecting the net carbon output, it simply introduces it at an early stage, probably increasing costs, adding to the handling protocols and not necessarily improving the quality of the product.
what a great advancement , but I found it curious that in the concrete placing part of the video that the steel reinforcement was left laying on the soil instead of being elevated and fully immersed by the concrete , not only will it eventually rust away but serves no purpose if not placed at a height to handle the slabs tension
I hope governments all over the world must require all cement companies to acquire this technology
I agree if it works the way they say it does.
Sounds very promising, and I enjoyed the report, but I was a bit unclear on the exact savings. If 1 lb of regular concrete emits 1 lb of CO2, how much does 1 lb of this new concrete emit?
About 5% less.
its the CEMENT making process that emits the bulk of the CO2, this process allows less cement per CY of concrete
This is definitely beneficial in the now. Regular concrete does absorb an equivalent carbon dioxide in its lifetime however. It`s called carbonation and all concrete undergoes the process, the only gain is having the immediate effect instead of the concretes 100+ year lifetime. more technical details etc.. its all nuanced
Daniel Mc Sween All the CO2 in the atmosphere will eventually become coal and oil again. The whole thing with CO2 is all about now.
mhmm, you`re right. The CO2 is having effects now, and this will directly mitigate the effects. The 100 yrs is still fairly quick and combined with pro`s and cons of each, regular concrete will continue to always have it`s place.
+Daniel Mc Sween Yes, and this has the benefit that we can't design structures based on how strong they might be in 100 years, so by using this we can use less binder, which is where the savings are. Additionally, this causes uniform formation of the carbonates, whereas the natural process occurs from the outside in, and that non-uniformity can cause stresses on the concrete.
+E'raan Lue Sort of but not really. One of the reasons we have all this coal is because the plants it's made of existed at a time before there were organisms well adapted to break down their tissue. These days, almost all plant matter is digested before it can be sequestered underground.
wow, thanks seigeengine. I think i understand better now. Cheers mate.
@@seigeengine ty
So if the manufacture of concrete powder is what produces said CO2 emissions, how much is produced when converting CO2 into a mineral? Besides that, if you can capture, convert & reintegrate the CO2 into the final product then why not add even more then you started with so your not just breaking even?
... none. Because that's not how it works.
How does the concrete hold up over time?
Where does the concrete come from and what is the difference between concrete and cement?
Okay. So cement is a binder used in concrete.
Concrete is a combination of a binder (cement) and aggregate. Aggregate is basically rocks of various sizes. Sand is used as very small rocks. The rocks are cheaper, and the various sizes cause them to lock together and bind up. The cement stops the rocks from falling apart.
Cement can be made of various things, but most commonly it's predominantly made of limestone. Limestone is roasted at very high temperatures, which releases the CO2 trapped in it. When the resulting material is ground into a powder and mixed with water, it forms hydrates, or stone. Gradually that stone reacts with CO2 in the air to reform limestone, although this happens over decades. This strengthens the concrete.
This process works by speeding up that carbonation, forming limestone more quickly, meaning you can use less cement to get the same strength. After all, we can't build things based on how strong they might be in 50 years.
1) Many of the commenters were concerned about how the addition of CO2 might lead to increased corrosion of the steel reinforcement. I feel they have addressed this issue, otherwise they wouldn't be granted the necessary permissions for commercial sale. Does anyone know what they did it?
2) No building is permanent, someday this concrete might end up in a landfill. The accumulated CO2 will just sit there. Planting trees is a better way to control carbon emmisions.
More or the less, its a great idea. Its a good effort.
Bhuvan Ravula For example in Finland nowadays reinforced steel for apartment houses and big office buildings has to be stainless steel or acid proof steel. Because of understanding mechanics of natural carbonation of the concrete after studying the apartment houses built in 70's and 70's.
Mika Peltokorpi I've read in a research paper that for carbonation to occur, the humidity in the region must be high. Water is a key component in the carbonation reaction. So desert regions have a lower susceptibility towards it.
Apart from this, Stainless steel is pretty costly. I wonder how they managed to implement it. 🙂
Relative humidity is the crucial factor. In Finland weather cycles between above and below freezing point. Between -5 C to +10 C air relative humidity is near 100%, so concrete is absorbing water from the air as air bubbles inside it are in lower relative humidity. This applies naturally to the rain water, too. Especially, if there is cracks or cavities or the paint surface is compromised.
So they are using CO2 to harden the concrete, but are they still producing CO2 when they manufacture the Portland cement?
excellent work
@thunderf00t can you pls review this
Wow! that blouse is open pretty low
So... muslim?
Skepticism is on. How can you store gas in a solid while mixing and especially during curing period. Unless the entire conrete slab is fully cover in pressurized co2 during the entire curing stage.
Have you never experienced a liquid with gas bubbles trapped in it? It's entirely possible, especially with more viscous liquids.
@@seigeengine extreme viscous perhaps. Cement mix isn't
The gas isn’t being stored as a gas. It ibecomrs chemically part of the solid that holds the sand and gravel together.
1 step forward 1 step back 1 step forward 2 steps back. Great job
Give these people a Nobel prize
Where is the mention about the C02 released when the Limestone is Kilned to make cement in the first place? duh.
if yall stop having so many kids...... problem solved
Why save the planet for a world no human will use? Three is no problem if no one lives.
It’s not even the western world that has a problem with that. It’s places like the Middle East and India who are causing overpopulation.
Nuke china😂 1.4 billion people less overpopulation solved just kiddong love to the chineese
Nathan Dyer nah youre right, we should
the goal is not to TRAP the CO2 the goal is to reduce the cement production which is the main C02 emission source.
Bringing this innovation to a country like China can become a game changer
time to buy some stock
Great report; thanks!
Good work
How do the suppliers get the CO2 into the tanks then delivered in those tanks? What you will find with most ideas like this is that they create the same or more CO2 in the beginning process sequestering the CO2.
The CO2 is produced by other industrial processes as a waste product, captured, then sold to recoup costs. It was going to be produced one way or the other.
So what happens when it breaks down ?
Nothing. It reacts CO2 into limestone.
Why is the host modelling herself @ 5:39?
What's her correlation to concrete other than her covering the topic?
Amazing
I feel like it would be harder to finish with lower amounts of cement
I wasn’t aware we had tests that determine something lasts “forever”.
How do they supply the CO2. How can they extract it out of the atmosphere.
They capture it at industrial sites that are producing it.
I need to work for them.
This deserves $100billion from FED for cleaning up their mess. Make this
available for the whole world.
FED's easy money policy and QE has made real estate and construction bubble through the roof.
responsible for huge part of environment problems.
Bet it is gonna be kinda expensive, but I dont know how it is price-wise
They literally answer that in the fucking video.
@@seigeengine I dont trust them. It is probably still more expensive somehow
no
probably somehow.....what price are you willing to pay for a better future for your children's children, or is that not a concern for u?
How does adding co2 in concrete make it stronger?
Cement is made by taking limestone and roasting off CO2 that's bound in it chemically. When you mix up a batch of concrete (containing cement), that powder forms a solid rock, and over time CO2 from the air diffuses into the concrete and reacts with it to reform limestone. This strengthens the concrete, but happens over a period of many decades, and the uneven change of this can cause stresses in the concrete. By injecting the concrete mix with CO2, they speed this process up, getting harder concrete faster without those internal stresses, which translates into needing less cement in your mix (since you can't design buildings on the strength they'll have in 50 years). Having to use less cement is where the co2 reductions come from as well.
Has this technology been independently tested and verified? I think this is a wool pulling exercise.
this is why you don't tax co2
Not taxing CO2 just means you're subsidizing it with public money.
WE NEED MORE TREES!
$money$ it has to save a significant amount of money. What present of concrete emissions are from the us?
wow okay this is my final year project . Hope for the best .
Is there any scientific explanation on the fundamental process of the way that how the concreat traps carbon dioxide
Yes. It reacts to form calcium carbonate.
So why can't we blend it with a polymer or ceramic and produce faux marble/stone building supplies? Throw in mica and it would look great as floor tiles.
You can?
Can't get concrete around here unless you're a contractor.
I'm proud of my carbon footprint!
What would plans breathe?
1:30 cement doesn't hold up "skyscrapors" lol
If we can make Roads with this... The most cement intensive structures on the planet...
So how are they getting the CO2?
Are they filtering it out of the air or creating it using a machine?
Smokestack emissions capture
2:38 When i put the tip in
If women piss themselves in terror when you put the tip in, that's probably a bad sign.
Isnt that unsave?
The real problem with concrete is the steel rebar used with it. Need to replace that with basalt rock rebar and other products that are not subject to rusting. rusting steel rebar is the main contributor to concrete failure and the need to replace it.
Let's see if they really want to see change....
Are they willing to lease out the patent for wider distribution?
Or are they trying to create a monopoly on from what we can see is a good step forward.
Ultimately it all comes to the bottom line.
Is this a 6 min AD?
If the prices JUST equal out, then any company in the money making business won’t go on an eco friendly route and take those extra steps just for the environment.
Sure they will. They can use that in marketing to attract buyers. Just think, for the same price you can now claim your building used new eco-friendly concrete.
1:01 yea because we can consume concrete