Versarien Share Discussion Threads

[festario] 13/9/2021 09:05

I didn't like to say... He is of a fragile disposition.

[dil 21] 13/9/2021 08:59

Well you’ve held these all the way down to 30p fav and continue to do so. Now that really is bad decision making of the highest order and it’s ongoing.

[mavfav] 12/9/2021 20:52

Am I a desperate die hard?Well at least one of us can get it up and keep it there I guess.Love the fact you can't let it go your bad decision making. Still at least you are consistent as it seems to be a feature of yours.I know nooothing

[festario] 12/9/2021 19:51

'Can't be much longer now. Neill said in that last interview that there are a few deals all at the point where we will see results' .. tragically, that was posted by someone who is STILL saying the same thing two years on.Some people need to get real, most have, it's just a few desperate die hards now.

[shavian] 12/9/2021 16:27

With all this external news beginning to build around concrete, 30p on the share price is increasingly begin to look like an absolute steal. I may just have to impoverish myself further in the morning. Sadly I have no grandchildren I could sell into slavery.

[dudhew] 12/9/2021 13:54

Glad to see you are eager to invest! If you can't wait then you can always go to the secondary market. Good luck, dyor..

[dil 21] 12/9/2021 12:50

When’s the next fund raising due ?

[mavfav] 12/9/2021 12:15

What I see is very few actually put numbers behind what they say. And if they do it's not like for like.Eg first Graphene will mention concrete and mortars and throw some % in the equation but that's only for mortars. Their ambition is concrete Similar goes for others or they talk of concrete coatings I think we are def way down that track and some haven't even got a train let alone at the station I know nooothing M

[sloppyjoe2] 12/9/2021 11:24

Actually, crowdjustice keep automatically extending the deadline. I could cancel it if I want, but why not let it run?

[serratia] 12/9/2021 10:19

There seems to be a logic to being able to use other graphenes. In plastic type polymers you need a certain lateral size to impart strength ie to resist bending. In concrete the performance is due to improved nucleation. That would imply that fewer layers is important as there's a greater surface area/gm but lateral size is less important.

[fireball xl5] 12/9/2021 10:00

Most of the cementless concrete appears to incorporate slag or fly ash. Is this sustainable? Waste raw material from coal to generate electricity and slag from smelting, refining. I see a supply chain created by a use of by product of the right chemical composition. So it's not revolutionary in chemical composition and it relies on those industries creating the raw material.Graphene allows the cement to get its superpowers in order by the chemical behaviour that it creates.

[laginaneil] 12/9/2021 09:45

Morning Shavian,

I guess with so many types of concrete VRS could do a lot of 'specific'

work for each type. Since each type will have maybe a 'lead' manufacturer

e.g. CarbonCure, then they will try to pick the likely 'fruitful' companies

who are interested.

Or it could be 'specific' work on industry standard cencrete's like the

UHP you mentioned.

As you and other said, it's not just 'chuck in' some Canadian graphite...

Just my thoughts.

[shavian] 12/9/2021 09:26

Hello Lag. Me neither. Seems there are lots of ways of reducing CO2 in concrete (somewhat), and this is the 'flavour du jour' in the lead up to COP26. Seems these are likely to be incremental improvements, whereas the game-changing breakthroughs will involve Graphene. I also think there's likely to be an element of 'greenwashing' applied to news releases like the Sigmaroc one alluded to in Shares magazine. Like you I could not find a trace of any technical explanation of what could lie behind this development. I'll ignore this one unless and until more tech details emerge.

[kemche] 12/9/2021 00:11

"Westbrook definitely knows how to keep extending deadlines.


Now is that misleading the setting of a deadline and then extending of deadlines? Isn’t that the last date or time that something should be completed?"

Has Neill changed his name?

Imminent.

[shopping in chester] 12/9/2021 00:06

Your usage being positively Chaucerian 'of course'



'would have done well to have'

😶

[chillpill] 11/9/2021 23:19

Well put Serratia. It’s far more complicated than most think.

Tennis was amazing! A new superstar is born.

[serratia] 11/9/2021 21:47

In presentations VRS make a point of saying nothing new needed just add graphene and pour in the usual way. As it's been emphasised I thought I'd check on potential issues which they must have overcome.
A survey of the literature concludes it's all about dispersion and it's not straight forward. In the labs researchers use mixers and ultrasonication to get good dispersion but that probably would be difficult at bulk scale. Graphene enhances the nucleation reactions and therefore needs good dispersion to increase the surface area available. If dispersion is poor and agglomeration occurs there is less surface area to react.
One way to address this is to add various chemicals to assist dispersion. A prime target would be polycarbonate as it's already used in concrete production. PC is absorbed on the graphene surface and imparts a negative charge. Two negatives repel so this prevents agglomeration of the uncoated graphene.
Users also require flowability of the concrete on pouring so the graphene concentration is important and again influences flowability in relation to it's concentration. Graphene also influences the pore size of concrete pores and can be reduced from 200 nm to 50 nm. This will impact on porosity and strength, higher graphene levels seem to reduce pore size but it's harder to disperse higher graphene levels. Pore size can also be reduced by adding silica fume due to its small particle size. Reducing pore size also leads to decreased cracking on setting. - Increased strength.
Flexural and compressive strength seems to increase with increasing graphene concentations but again dispersion becomes more difficult. Water resistance increases with increasing graphene concentration. Concentrations of 1 to 1.5% graphene improves both strength and water resistance but again apart from cost it's a dispersion issue. The lack of cracking also improves the resistance to acid attack. (There are microbes that live on sulphates as an energy source and secrete sulphuric acid). Acid attack can fall to 30% of the level of native concrete.
Abrasion levels drop to around 30%, freeze thaw losses can show a 10 fold drop. Thermal cracking reduces. To get good electrical conductance you'd need 3 - 4% graphene and electromagnetic signal reduction would need probably 5% graphene.
It all boils down to dispersion and keeping up the 'available ' surface area. Perhaps 0.03% graphene is the optimum based on cost and dispersability. The other issue is that there are many types of concrete and I assume each will require optimisation. ' Standard ' concrete might be 4000 psi but UHP concrete can be 12000 psi + that is not the same mix.

Anyway the good news is VRS have the mix/dispersion issue sorted for standard pours and I can now see why that's something worth emphasising.

[chillpill] 11/9/2021 20:47

Until recently I had underestimated the importance of graphinks. The IP helps VRS stand out from the rest.

[festario] 11/9/2021 20:41

Mavfav, going only by your abysmal and clumsy misuse of the English language, I'd say that your self-proclaimed membership of Mensa is equally dubious.