> and concrete also releases CO2 when it cures.
As it cures, Portland cement ABSORBS "nearly a quarter" the CO2 used to produce it.
https://www.sciencemag.org/news/2016/11/cement-soaks-greenho...
Bacteria and sand engineered into living concrete
21–25 of 25 posts
Re: Bacteria and sand engineered into living concrete
#22Similar but distinct from https://en.wikipedia.org/wiki/Microbiologically_induced_calc...
Re: Bacteria and sand engineered into living concrete
#23Earlier quoted context omitted.
As a counter, do you want to buy a brand new Tesla made with "100% recycled parts from former cars!"?
I'd buy a refurb at a refurb price. My car is 10 years old and still running great so I can't imagine a refurbished newer vehicle running any worse.
There are no refurb skyscrapers. Noone wants a transmission with 185,000 miles on it in a "new" car, just like a developer doesn't want a concrete form that supported 40 floors above it for 20 years in his "new" construction.
Re: Bacteria and sand engineered into living concrete
#24Earlier quoted context omitted.
I'd buy a refurb at a refurb price. My car is 10 years old and still running great so I can't imagine a refurbished newer vehicle running any worse.
There are no refurb skyscrapers. Noone wants a transmission with 185,000 miles on it in a "new" car, just like a developer doesn't want a concrete form that supported 40 floors above it for 20 years in his "new" construction.
But I meant blocks that were mostly under simple compressive load, not slabs. Would they still age bad ?
Re: Bacteria and sand engineered into living concrete
#25Can it use desert sand rather than riverbed sand?
Not really, desert sand and riverbed sand have different characteristics with regards to smoothness and grain size, etc.. You really can just use desert sand.
I elsewhere read much concrete is made with rare, far away, environmentally damaging illegally dredged riverbed sand, because desert sand (or other more available less environmentally precious substitutes) were unsuitable.