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

DigInfo TV - http://diginfo.tv

8/8/2011

TIS Partners

Category:

Science & Technology

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• DigInfo
• DigInfo News
• DigInfo TV
• TIS Partners
• CO2 Structure
• concrete

[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!

[nisbahmumtaz909]

OH DAMN

SHIP THIS TO THE WHOLE WORLD

FUND IT

FUND THE FUCK OUT OF IT

[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!

[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.

[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]

@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?

[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]

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