A lot of research has been done into green concert since it is an area that we could improve on and dramatically cut emissions. Did not expect coffee grounds to be an option but the US does drink a shit load of it š
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541 sats \ 6 replies \ @987654321 2 Jan
The Romans used volcanic ash in concrete and that's why the acquaducta are still standing. Portland cement uses fly ash which is a by product of incinerators. The ash prevents the concrete from falling apart.
This Yahoo article says a lot of nothing. Only that, hopefully, maybe, we kinda, might, have a chance ....
Sand still is an important ingredient and coffee grounds will not replace sand. They might replace the ash part of the equation but not sand.
As some of us know from hard money. Soft money or cheap money creates scarcity. So as long as we depend on cheap fake Fiat all resources will be scarce and tax based upon "environmental" nonsense will be just another method of extracting resources from already poor people.
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0 sats \ 1 reply \ @Cje95 OP 2 Jan
This study clearly states that this would help reduce sand usage so you keep commenting it wont touch the sand when the study states the opposite.
The sand used in concrete is an issue because we are running out of easy places to get it from. It sounds crazy but desert sand it to fine which is why river sand is the most common. However, we have seen over the years āsand gangsā or criminal groups that literally come in one night dredge out a river and are gone in the morning. Replacement is needed for our current approach.
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0 sats \ 0 replies \ @987654321 2 Jan
The article is wrong. That's my point and the writer does not understand how concrete is made. It's meant for people who do not understand what concrete is. The recipe for concrete was lost until the early 20th century so, like most modern technologies, we assume we know so much but we don't concrete was used thousands of years ago. Concrete also is a product that can be reclaimed.
And with the continued use of fiat that has can be produced infinitely there will be a shortage of food, water, sand, concrete... because the controllers of fiat can front run those who have to work for fiat.
I have an extensive and intimate knowledge of concrete. My grandfather, father, uncles and myself have all been working with concrete for many years. I've been an estimator, form carpenter, foreman and superintendent for many high rise projects, bridges and other civil and commercial ventures.
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0 sats \ 3 replies \ @BlokchainB 2 Jan
Wow this person knows his concrete design š but I disagree on what causes scarcity. Only thing limited for humans in this universe is time. Hard or soft money doesnāt solve human death and what comes after death.
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94 sats \ 2 replies \ @987654321 2 Jan
Easy money or soft money, aka Fiat currency causes scarcity because it only benefits those who already have it at a very high quantity and also it benefits this who can print it or can borrow it by making promises. That's how they maximize their time and confiscate yours.
Learning to find hard money abd assets that are not easy to confiscate like Bitcoin increases the amount of time you have to make choices.
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0 sats \ 1 reply \ @BlokchainB 2 Jan
How? Those who have it die. This argument doesnāt make any sense. The hardness of Bitcoin is computer code. That humans agree to follow. Why? They think it will serve them well in the long term. But having hard money doesnāt make time more abundant. Individual time. Hard or soft money is indifferent to the amount of time you have on earth.
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0 sats \ 0 replies \ @987654321 2 Jan
You are already wasting your time using computer code. Bitcoin frees you to increase the choice of your time. If you are merely concerned with time then you definitely would not waist any of it typing out responses. But you do use computer code and you waist your time arguing about time and that code is just code when you yourself use it to negate the object of code and pretend that you are outside of the realm. Even your nym tells the truth that you are just being a contrarian and not sincere.
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0 sats \ 0 replies \ @987654321 2 Jan
Below my dates are wrong as I look back I am thinking of Portland Type II , Portland cement is the early 19th century and late 18th century. --Redacted
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0 sats \ 4 replies \ @cryotosensei 2 Jan
As an avid coffee drinker, I devoured this article with interest. Though I donāt think heating the waste to above 350 degree Celsius is particularly environmentally friendly. Still, good to know that there are possibilities other than relying on sand
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0 sats \ 3 replies \ @987654321 2 Jan
It's incorrect that they would replace sand with coffee. That's dumb. It's the fly ash that they would replace. Sand is the finer aggregate that needs to fill the void between the larger aggregate of rocks.
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0 sats \ 2 replies \ @Cje95 OP 2 Jan
The study discusses using coffee to replace some of the sand. It would lower the amount of sand needed and that would be significant.
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0 sats \ 0 replies \ @987654321 2 Jan
https://www.engr.psu.edu/ce/courses/ce584/concrete/library/materials/History/DevelopementofPC-main.html
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0 sats \ 0 replies \ @987654321 2 Jan
That's dumb and it is patently incorrect.
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0 sats \ 2 replies \ @SimpleStacker 2 Jan
Interesting. As an avid coffee brewer, I throw away a lot of grounds every week. But the problem is going to be logistics. How will they make it economically feasible for people like me to recycle our used grounds?
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0 sats \ 0 replies \ @987654321 2 Jan
They won't make it economically reasonable. Already there are trash incinerators that make power and the by product is the fly ash that is needed for Portland cement. Sand is still going to be needed.
The economical problem is Fiat currency and the machinations to front run money printing and digital database additions to the supply. There is no denominator for Fiat currency.
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0 sats \ 0 replies \ @byzantine 2 Jan freebie
just it your coffee grounds in your compost. plants love it
0 sats \ 2 replies \ @byzantine 2 Jan freebie
this is such a dumb article. coffee grinds make great admixture to compost and help increase the nitrogen of soil. this article is basically saying "we produce too much dirt each year"
you could almost grow massive tomatoes in pure coffee grounds