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[andymoore07] 09/6/2021 07:53

Sentiment hasn't changed just yet has it

[twatcher] 09/6/2021 07:23

what happened to the 2nd generation "super duper tested and found to be wonderful", masks ? Suddenly its like VRS never made masks, that was an alternate universe that never happened. And while we are on it, what happened to the FFP3 masks ?

Where are the people that told us this was going to be such a brilliant revenue earner ?

[forestfred] 09/6/2021 06:39

Interesting article

WHY GRAPHENE IN CONCRETE?

Graphene is certainly a “new kid on the block.” Still, it demonstrates real potential as a concrete additive. Concrete made with ordinary Portland cement delivers compressive strength at a modest cost. This quality makes it one of the world’s most popular building materials. However, low tensile strength requires reinforcement in many applications.

There are numerous ways to address the challenge of concrete’s brittle nature. Graphene concrete simultaneously improves compressive strength, flexural strength, and split tensile strength. More resilient concrete cracks less, and it better resists stress. More crack-resistant concrete lasts longer, and it requires less maintenance.

FLEXURAL STRENGTH
In 2019, researchers published the findings of a graphene concrete study. They looked at adding graphene oxide nanosheets to mixing water in concentrations from 0.02 to 0.08 percent. At 28 days, flexural strength across that range increased from 2.7 to 15.6 percent.

COMPRESSIVE STRENGTH
The University of Exeter team calculated the compressive strength of their graphene-reinforced formulation. They found that it had 146 percent more compressive strength than standard concrete. Stronger concrete allows for lightweight designs. The added strength allows architectural engineers to do more with less. A lighter weight material often means more dynamic designs and lower carbon emissions.

WATER RESISTANCE
Researchers observe that “the durability of concrete depends on the capacity of a fluid to penetrate its microstructure.̶1; Graphene concrete is up to four times less permeable than its traditional counterpart. Low permeability decreases the amount of water compromising the surface. Normally, moisture infiltrates through cracks and capillary pores. Graphene-reinforced concrete also minimizes the alkali-silica reaction (ASR). This is the swelling resulting from moisture infiltration. This swelling leads to cracking and other structural issues.

ECO-FRIENDLY
Graphene-reinforced concrete uses much less cement to deliver the desired strength. As a result, it may reduce CO2 emissions by 983 pounds per ton, according to one estimate. It is also possible to source graphene from sustainable sources. For example, Rice University researchers made graphene from garbage.

GRAPHENE CONCRETE: POTENTIAL USES

The potential uses for graphene concrete are many. They include those that take advantage of its resiliency, conductivity and/or impermeability. Researchers have only begun to contemplate the full range of possibilities.

DEPLOYMENT IN HIGH-STRESS ENVIRONMENTS
The brittleness of traditional concrete is an inherent concern in high-stress settings. By contrast, graphene concrete demonstrates flexural strength that makes it a viable alternative. Higher costs are offset to a degree by longer life cycles.

COMBAT MOISTURE INFILTRATION
Low water permeability makes graphene concrete attractive wherever moisture is a concern. High durability means long lifespans and minimal maintenance. These qualities are of particular interest in places that are difficult to access.

HEATING FLOORS AND WALLS
Researchers hope to take advantage of graphene’s conductivity to create walls and floors heated without cables. In 2019, cement producer Italcementi displayed a multi-layer floor mock-up at the 2019 Mobile World Congress in Barcelona, Spain. It included a layer of graphene-cementitious composite along with sub-flooring, polystyrene insulation, a concrete slab, bedding mortar and ceramic tiles.

SMART CONCRETE
Thanks to graphene’s conductivity, it is possible to deploy smart sensors across entire surfaces. Imagine the possibilities with real-time monitoring of stress, deformations, temperature and humidity. More proactive repairs could minimize damage and extend lifespans. Smart concrete could usher in a new generation of greener buildings.

PUTTING CONDUCTIVITY TO WORK
Graphene concrete's heat and electrical conductivity inspire other potential applications. It may help de-ice airport runways. Graphene concrete may also contribute to the infrastructure required for high-speed rail. It may lead to more cost-effective wireless charging of electric vehicles. Protection from lightning strikes is another possibility. Anti-static flooring and electromagnetic interference (EMI) shielding are other possibilities.
Dyor As always


Ff

[squire007] 09/6/2021 05:37

Morning all... happy days in the sunshine. :-)

[festario] 08/6/2021 22:51

Yes Red, and imagine how infantile you have to be to take the time to create childish cartoons of other bulletin board posters too.What a sad, worthless life.

[fireball xl5] 08/6/2021 22:51

What an exciting future we have to look forward to. https://www.mub.eps.manchester.ac.uk/graphene/2021/06/covid-catalyst-how-graphene-can-lead-the-green-recovery/COVID catalyst: how graphene can lead the 'green' recoveryApplications Collaborations Graphene Engineering Innovation Centre 8th June 2021?As the CogX festival of AI and transformational technology runs from 14-16 June 2021, James Baker, CEO of Graphene@Manchester, explains how innovation in advanced materials has the potential to support social, economic and technological opportunities to help achieve a green recovery following the impact of COVID-19.

[red7al] 08/6/2021 22:35

Living life on a bulletin board is a little sad, however you look at it, soldier.

[smythe2] 08/6/2021 21:54

RTG...lol....The failed pizzeria boss and his two incompetent waiters.

[festario] 08/6/2021 19:35

Whatever Malcolm says will be right, whatever it was.

[schmally] 08/6/2021 19:05

I’ll join in as well. As far as I can tell, TW has managed to attract just two bellends to Shareprophets from the VRS board in 3 years. Fatty and Clubs.

Thankfully for TW however subscriptions are just a smokescreen to obfuscate his main income stream which it appears to be from profiting from share market manipulation and tax evasion.

Anyone would think Bbm is Tom the way he so desperately tries to big him up. Either that or he’s on the payroll. Surely TW and his gang would never use multiple aliases to post under false pretences though??? No of course not😂

Luckily for TW the AIM regulators and the FCA are so toothless and useless that he’ll continue to get away with it for a good while yet.

If Tom would like to evidence how successful Shareprophets is as a business, how about he show us his full accounts for the business for the last 3 years.

He won’t of course, because they would only show insignificant revenues and some dubious ‘consultant fees’. I seem to recall his pizza company paid out about 30% of annual revenue on ‘consultants’ as well. Hmmm, as if😂

[rogerthegrouch] 08/6/2021 18:14

I think we measure success in different ways. TW is one of the most loathed people in the UK and is “well known” as you put it because he is abhorrent and hated. Call it the piers factor. If being loathe is success to you, then keep going soldier - you are well underway. I mean what a sad case you are living your life on a bulletin board where you have no interest. You’re a loser, simples

[sloppyjoe2] 08/6/2021 18:13

I think TW hates Ricketts even more than I do, though I confess I'm not entirely sure why...

[smythe2] 08/6/2021 18:12

“But we love ya Tom” 🥰

[tweetingceo] 08/6/2021 18:10

Dear RogerTheGrouch,

I’m still here, and my position hasn’t changed.

You may not have noticed, but we have some wonderful weather at the moment. There really are better things to do than discuss VRS with you.

For now, ramp away, I am otherwise engaged.

[woodpeckers] 08/6/2021 17:56

Getting Matt on board was a serious coup for the company and shouldn't be underestimated.... His experience and contacts are invaluable and he wouldn't have joined if he weren't pretty confident that he could be successful in the role... Why would he?

The plan is unfurling like a spring bud...

Like other lths I am topping up when I can rather stressing over the day to day movements....

The world actually needs graphene now... it has seen what it can do, you can't undo that and nothing else that we currently have available can compare...just time before the party starts imo.