100% agree. our buildings should be built out of what ever material makes them best suited for ... being a building. as far as eliminating 'organic waste', I really don't care about that at all.
The only thing I care about is, does it make better concrete that is economically feasible?
you just spent a bunch of energy heating old organic waste
If the heat generated by the curing process in concrete is suffice then you get that for free. Better in fact, because you're making waste heat useful.
That seems like it would be a bad thing in concrete.
Later it mentions "Pyrolysis involves heating organic waste in the absence of oxygen." So maybe that does the breaking down ahead of time?
But then ... you just spent a bunch of energy heating old organic waste. That also seems strange if you're taking an environmental approach.