Plants dont do well without it.

Co2 bad? Doesn't all life on the planet depend on the presence of Co2? I'm not a rocket scientist by any stretch of my mother's imagination, but I think I remember Co2 being required for osmosis to take place. Maybe its just me and my old brain.

lol. :-)

Pay no attention to my evil twin. He's a monster of a Marxist.

I get the feeling that we are in greater danger of drowning in the hyperbole of global warming, than it's physical ramifications.

Is it economically comparable? I did not see that answer. One cubic yard of concrete costs ~$120 for the 3000 psi rated stuff. As an engineer I would look to optimize their uses based upon strengths, needs, and costs. You can readily buy higher strength mortar and grout than portland cement but it costs more. My clients aren't made of money, unless they blindly worship all this earth first theology, my clients will say cost is more important.

my sister is a commercial artist, and she would
praise its lovely color !!! -- j

The thing to remember is that people who are otherwise brilliant in their field (engineering, science, medicine, etc) are often just as susceptible to propaganda outside their field of knowledge. It is so easy to be put to sleep by the constant propaganda especially if your work is totally engaging. Don't be misled into tossing out the good invention just because it is promoted for the wrong reason. I know I see GW and almost stop, but there are gems to be found among the dreck.

I beg your pardon: I thought that the visit had already occurred.

I looked up and read about the aidomes after they were mentioned. I am NOT expecting the developers of those structures to have an opinion of this just-developed cement. I do think that 'improved strength and flexibility' would be an advantage for that type of construction.

Jan

Without other (or non-) market forces a cost disadvantage of that magnitude will likely be insurmountable except, possibly, for niches.

If you mean the aidomes, they are to be examined next weekend. I doubt they will have an opinion on this cement tech at this point. If you have any specific questions about the dome process, let me know and I will ask.

All those questionable advantages -- for a mere TWENTY TIMES (20X) the cost of Portland Cement

Comrade citizens, either buy Eco-Friendly Cement or prepare to tread water. This link may lead you to your very wet future--

https://www.youtube.com/watch?v=oEp382HI...

So remember, comrade citizens, remember to buy only Eco-Freindly Cement. It is only sold by fine crony stores.

If it is stronger and more flexible than cement, it is a worthwhile invention in itself - irrespective of its positive or negative carbon footprint. I wonder how this would do instead of cement on the building modules that were used in the homes that jbrenner examined. (I was quite taken by their construction process.)

Approximately 300,000 years ago, in Sibudu, (near bottom of Africa), the commercial production of ochre began. What most folks do not realize is that ochre combined with pine sap forms a two-part epoxy (used for attaching hafts to spear and arrow points). If I recall correctly, this was due to the ferrous ions in the red ochre. So - after 300,000 years, we have reinvented the process.

Jan

If there really is a demand for such, it will proliferate... unless it upsets the existing power structure.

There you go -- being rational. Will you sane persons never stop?

when I got to the global warming comment I stopped reading. he discovered this in 2002 and it still will not be on the market in 2022.

Seconded

Interesting question.

Exactly

Maybe with an Iron house made out of this I can finally take off my aluminum foil turban!

Agreed, my post is along the same lines.

This story assumes that Co2 is somehow bad. We have to accept that premise for the story to have any impact as written. There is no sientific proof that Co2 is deleterious. Every story mentions a "scientific concensus" not scientific proof. All plant life on earth depends on Co2 to live, the same way animals depend on oxygen. That being said the invention has value in that it uses a waste ptoduct and performs better than the product it replaces. However as is typical the story leaves out important details. 1. The cost. 2 how much matdrial is available, can it really replace cement or is it a minot scientific curiosity. This is the type of thing we usually see in these stories they often fall in to the category of scientific curiosity.

But is it superior to Roman cement which can harden underwater?

This may be a great product but IMHO CO2 is not a good reason to use this product. We breath out CO2 and plant must have it to live. In fact greenhouses add CO2 to make their plants grow better. Extra CO2 in the environment is a good thing.