"CO2 Structure" Could Help Rebuilding Efforts In Earthquake Stricken Areas #DigInfo

[CurseTheDarkness]

If this stuff is so good, why didn't they make a full size model of a structure and test it against the same model made of traditional concrete? You know, take a sledge hammer to both and see what happens. Instead they are showing us lego-size chunks of wet sand and telling us this is the next big thing. I say baloney.

[TheJoshua111]

Epoxy makes it burn when theres a fire!

Your house will go bye bye in a few min.

I prefer normal concrete =P

[jackybuzz]

I see a  game changer.

[ragbra]

It is not stronger than concrete just because tensile strength is higher. Compressive strength is what counts.

Concrete cures continuously from the time cement is mixed with water, reaching ~60% strength in one day, which can be anywhere from 5 to 150+ MPa depending on design. This sand-castle probably has a maximum of 20MPa, too bad they left out that most essential number. In a small fire, epoxy goes up in flames, and the house crumbles within a few minutes. Publicity-stunt-warning!

[sidthemyth]

sand castle?

[bobbusan]

that looks delicious

[Duodecillian]

@bobbusan Haha, I know man. I wish I had a granola bar.

[lightsodda]

How come you Japanese people are so god damn brilliant. I envy...

[matthewtburk]

As a chemist, the chemical eqation that they show is not only impossible it isn't even written correctly. What is alpha? Chemical equations use also use arrows not equals signs. These people know nothing about chemistry, they are packing wet sand together just like a sand castle at the beach and covering it in epoxy.

[RealSlimEmre]

@matthewtburk SiC production is even much more difficult that this, I don't understand how this would produce SiC

[jofacoca]

@matthewtburk well maybe its posible that they dont want you to know the formula or something, they arent goin to give you a free piece of a multi biollanre discover or something!.....

[RealSlimEmre]

@jofacoca he's right, man, this is rubbish.

Look up silicon carbide and tell me what you find

[ejtisdale]

@matthewtburk

Might the equals sign indicate an irreversible reaction?

(SiO2 + α) + CO2 = (SiC + α) + 2 O2

But I agree with you in that the chemical equation is unconventional to say the least. That, and according to a recent PNAS article, a diamond anvil and some serious GPa-type pressure is typically involved in this type of transformation.

doi: 10.1073/pnas.1019691108

So, what are they hiding? What is "α"? And why does it remain unchanged in the products side of the chemical equation?

[CrimelabS]

@matthewtburk Yeh agree with u man. Back in college materials engineering gives a more detailed presentation than this including various stress test. Its more likely the same purpose as concrete only that it uses CO2 and epoxy as its binding elements rather than cement...cement under heat breaks and cracks thats why it needs reinforcements like steel and I think epoxy is flammable i dont think even Hitler would even want his bunker made by this material.

[RealSlimEmre]

@CrimelabS if I may correct you a bit; steel reinforcements are required only because concrete fails under tension but not under compression -- it's got low tensile strength but high compressive strength-- so they need steel to carry the tensile loads. e.g. loads in the middle of a simple beam cause the upper part of the beam to be under compression while the lower part under tension(bending moment) steel will carry these tensile loads and concrete will have no problems carrying the compression.

[iradeourum]

it is significant aid in colonization of Mars.

BTW this effect is used for years for example in fabrication of form for casting.

[ericl3414]

alot of the videos I find with most of japanese technology is "sex" wtf people do you think of sex all the time???

[LegoHog4001]

@ArtOfKillingTY The problem is having the facilities to produce this. I agree that there is a lot of silica just sitting around, but to actually be used for something like this it has to be processesed at least somewhat. if all of the current concrete facillities were shifted to production of this CO2 sturcture it could work very well.

[syriz3]

wtf is he saying?

[sasasa691]

まじ考えられない位すばらしい技術だと思う。日本人でよかった。

ところで

韓国の報道では「日本に韓流を広げる国策が失敗」と認識している­-ようだね。

そう！！失敗している！！ある意味じわじわやれば成功したかもし­-れないが。

フジテレビの馬鹿なゴリ押しによって逆に反感をかってしまった。

そう！！！じわじわやれば徐々に受け入れられたかもしれないのニ­-ダ！！！！

フジテレビは韓国に【謝罪】と【賠償】をしなければならない！！­-！！！！！！！



[FlumenSanctiViti]

Silica sand is abundant, so is CO2. Only question is, how cheap is to produce that binding epoxy in large quantities?

[jordanmf33]

Is this cheaper to make than concrete though?

[LegoHog4001]

@ArtOfKillingTY More R&D is a good idea, there still is the simple problem of avalible resources. It would require a huge amount of silica to actually build a building, let alone access to that large of stocks of epoxy or urethane.

[SirReptitious]

@LegoHog4001 LOL! You're kidding, right? Silica comes from sand, the most plentiful substance on Earth after salt water!

[Sakuya29]

aw man this is awesome.

[IsaacDeanMusic]

Ultimate sand castle

[innerguardianXIII]

more proof of Japans efficiency and the help it could bring world wide, i LOVE Japan :D, keep up the awesome works mina-San.

[TIMMEHHURTS]

theyre not going to be building anything quickly wiith bricks that small

[Goldor2005]

@TIMMEHHURTS As you saw they can make larger molds of what is needed as well, though how large is hard to tell.

[jayfulf]

@ArtOfKillingTY Was just thinking that

[Bobsry16]

Wow you could build a pretty huge sand castle...*_*

[nmikesell]

@Bobsry16 yeah who woulda thought the future of modern architecture would be sand castles.

[nisbahmumtaz909]

OH DAMN

SHIP THIS TO THE WHOLE WORLD

FUND IT

FUND THE FUCK OUT OF IT

[dianangreany]

is epoxy, non toxic material that save for kids?

[epicfilmclips]

i can say my sandblock is made from co2 too you know...

[Spetznaz]

then you add fire and it turns into glass and all the structure falls down

[donfedes]

Notice the chemical equation, the reaction yields only oxygen (at least in theory)! That seems like a perfect example of smart carbon sequestration, not only do you help the environment but you produce a material that is better than concrete in certain ways. Kudos to the developers of this!

[13elsyd13]

dear santa.... wait what? o.O

[citruscyanide]

We need this for Christchurch in New Zealand too!

[jatigre1]

Building with sand!