This is the type of reporting we need. Real problems, real solutions

Concrete here concrete there concrete everywhere...

So do trees

This reporter behaves more like a model.

should be more worried about the sand issue can't just use any type of sand to make concrete

I see a big mistake or forget. Where the CO2 come from? From the process of making cement. If not. It’s useless...

This is awesome! Saw the scientist that created this a few years ago, it’s finally being used.

3:25 Is that a pothole? Outside a concrete factory?

This should come as law for everyone making concrete and government should help these companies to get necessary technology to do this

Concretors. ...we will lay anything.

Wow, very cool. Thanks for the report! Great job all the way around. Topic was amazing. Reporter did a awesome job as well. A++

I think she peed herself there lol

2:36 ok she just peed.

sounds like another way to jack up the price on concrete.

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.

So what happens when the buildings have to come down does the C02 get released then 🤷🏼‍♂️🤷🏼‍♂️🤷🏼‍♂️

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.

I was skeptical with the CO2 emissions, but "increases the compressive stress with lesser concrete" 😱 oh boy you have me!😍😘😍

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

It's amazing we haven't found/invented a synthetic cement replacement yet.

Wouldn't the alkalinity decreases due to presence of CO2 thus increasing the chances of rusting

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

How do they source their c02

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.

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.

long term may be kinda bad. what happens when the concrete degrades will it leech out? or does it chemically bond with the materials?

Absolutely genius!!! This is brilliant! We need more innovation like this!

Does this allow a house to reflect back the heat observed during the day time

Who else jumped in your seat on the slow motion butt shot. I was like yassssssss🤩

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.

So do you will change concrete on/in coal factories?

I wasn’t aware we had tests that determine something lasts “forever”.

if yall stop having so many kids...... problem solved

Well, what's the new compressive strength? And is stronger also more brittle? There are a lot of questions here to me...

awesome reporter, keep doing this amazing job, she looks very inside into this subject, natural way

@Thunderf00t what do you think about this one??

Whats the shear strength impact?

"This is the brains of the beast here"

Great job thank you for all this work. Great job everyone, for tomorrow

wow okay this is my final year project . Hope for the best .

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

This is so amazing!👌🏻

Huh.. We tried it at csc.. and still going to try it. And .. 2646.. yup.. that was my truck for a while in sc.

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.

HempCrete plz.

European beer makers would kill for that CO2 right now.

that's really nice to hear :)

WE NEED MORE TREES!

How does the concrete hold up over time?

Year 2021, update on this pls

$money$ it has to save a significant amount of money. What present of concrete emissions are from the us?

Great report; thanks!

Why dont we just pour concrete into factory chimneys? 🤔🤔

excellent work

@thunderf00t can you pls review this

I feel like it would be harder to finish with lower amounts of cement

While some buildings will last for more than 50-60 years without problems, some will start developing problems after few years of construction...so forever? No.

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.

and ... how it will behave in case of fire in the building?

Has this technology been independently tested and verified? I think this is a wool pulling exercise.

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.

Do U realize trees use co2?

cool

At some point in the video, I expect Johnny Sins to appear.

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?

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.

This is awesome 👍👍

An impressive technology.

This is so genius. We need innovation if we are to survive and (hopefully) mitigate climate change.

I noticed they addressed the compressive strength and didn't mention the shear strength. Interesting..

Why is the host modelling herself @ 5:39? What's her correlation to concrete other than her covering the topic?

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?

How do they supply the CO2. How can they extract it out of the atmosphere.

Best Idea..!!!

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.

Amazing

I'm proud of my carbon footprint!

I hope governments all over the world must require all cement companies to acquire this technology

That's just great innovation

I need to work for them.

1:30 cement doesn't hold up "skyscrapors" lol

Where is the mention about the C02 released when the Limestone is Kilned to make cement in the first place? duh.

Good job!

1 step forward 1 step back 1 step forward 2 steps back. Great job

What would plans breathe?

Give these people a Nobel prize

It's a concrete proof that concrete contributed to global warming but concrete also might help reducing global warming.

Good work

So they are using CO2 to harden the concrete, but are they still producing CO2 when they manufacture the Portland cement?

There is an optimum amount of co2, just like there is a level where it's too high and a level where it's too low. Too low starts at 200 ppm , the point at which plants start deteriorating The point at which the earth was on its greenest with the highest biodiversity ever must be the optimum level, this was around 2000 ppm. The explosion of life happened with a co2 level between 7 and 8000 ppm, mostly in sea, with corals and shellfishes all around without having any problem with acidification, this is still OK to support human life otherwise co2 alarms wouldn't be set at 8000 ppm in sub marines and 12000 ppm in the international space station. Let's say that however it's still OK to support human life it is not really ideal anymore so too much starts between 8 and 12000 ppm. We are currently at approximately 400 ppm, this is clearly in the lower zone, it's fine for human life, but not longer to support a full green world with a large biodiversity like I once was. Lowering atmospheric co2 levels is an anti-life endeavour.

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.

i have something concrete for the reporter 😬

So they save money in the long run but it equals out ?

This is awesome! Also cool to this Swedish concrete company be in the forefront

Where does the concrete come from and what is the difference between concrete and cement?

Bringing this innovation to a country like China can become a game changer

the goal is not to TRAP the CO2 the goal is to reduce the cement production which is the main C02 emission source.

So how are they getting the CO2? Are they filtering it out of the air or creating it using a machine?

Can't get concrete around here unless you're a contractor.

Good idea. However, will the CO2 be released again when the mechanical use of for example roads destroys the material?