[jonrick46]

"The degree of devastation that emissions [CO2] from the cement industry cause on the ecosystem is inestimable."

The fix is in. The environweenies will put a carbon tax on every sack of cement manufactured. The poor homeowner will be paying a ton to pour that back patio he wants to upgrade his home. Give all to the black hole of CO2-dom.

[pharmacopeia]

Constant innovation. I like. It’s fantastic that the best and brightest from around the world come here to be educated and innovate.

[Jayster]

“Carbon dioxide (CO2) a major greenhouse gas”

Major as in .04% of the Atmosphere..... yea thanks for the education.

[Moonman62]

Graphene is a commercial dud. My instincts tell me this company is probably a scam.

[chrisser]

So can I just buy a bag of graphene from this company and add it to my concrete mix, or is it more complicated than that?

[Tonytitan]

" It has also been revealed that carbon dioxide is the second most widely consumed substance on Earth after water."

Is that true? If it is, what's doing all the consuming? Is it/are they living, biological life forms? If so, they must produce a waste product. Would oxygen be that product? Goodness knows we can't have any of that! This CO2 consumption must be shut down immediately! This deadly oxygen will kill us all!

[ProtectOurFreedom]

...bridges, dams and other concrete structures requiring very high tensile strength...

Yes, concrete is always the material of choice when high tensile strength is needed. /s

[Windflier]

"Studies have shown that about one ton of carbon dioxide is released from every ton of cement produced."

I was with the author up until that point.

A ton of concrete releases a ton of CO2? That doesn't even make sense. I might believe that concrete releases a similar amount of H2O during the curing process, but CO2?

Dude is releasing methane from his pie hole.

[conservatism_IS_compassion]

"visit visit https://nanographene.net.”

Not long ago producers had only one simple goal: make graphene at any price, whether through adhesive exfoliation or chemical processes. The early results included extremely expensive graphene with unpredictable properties, production techniques that were not scaleable and sometimes very harmful to the environment.

The basis of NG’s technique is the exfoliation of graphene plates from a larger sample of natural or synthetic graphite. This method involves the interaction of concentrated cavitation fields in a working solution of water and source graphite. The process takes place at low temperatures of 46 degrees Celsius or less and does not require the use of chemicals. Water from the working solution can be recycled and re-used multiple times. The single-stage simplicity of this method allows NG to produce graphene in industrial quantities at low cost.

. . . which begs the question of just what they mean by “low.”

A lot of trouble is undertaken to accommodate the very low tensile strength of concrete, including steel reinforcing and even prestressing. If the graphene actually delivered on the hype in this case, “low” cost would not have to mean zero.

introducing graphene to aluminum and magnesium renders them stronger than titanium.

If that is for real, the Navy should be beating a path to their door for material out of which to make submarines. And auto makers should be looking at pistons and connecting rods - and automotive unsprung mass, to improve ride and handling. E.g. tire reinforcing material . . .

[HandyDandy]

Graphene is a zero-gap semiconductor, because its conduction and valence bands meet at the Dirac points. The Dirac points are six locations in momentum space, on the edge of the Brillouin zone, divided into two non-equivalent sets of three points. The two sets are labeled K and K'. The sets give graphene a valley degeneracy of gv = 2. By contrast, for traditional semiconductors the primary point of interest is generally Γ, where momentum is zero. Four electronic properties separate it from other condensed matter systems.