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(former) cement scientist here.

you say we are "addicted" to cement/concrete which is correct, but then propose more cement? i get we might need cement here and there for energy transition and might need your tech. but isn't using less cement a better/complementary approach?

im addicted to tobacco, not sure natural tobacco is my best bet.

at a time where half of the world is burning, do we need more 10 ways bridges for huge cars?

how do you tackle the worldwide sand shortage problem?

does your tech solves the issue that comminution (grinding) of clinker is one of the biggest electricity consumers worldwide?

how does that scales up, how long to deploy? what are the consequences (please be honest) to marine life, knowing that most kelp forests/corals are now gone/bleached?

how does your tech tackles the massive corruption problems that come with concrete?

thanks in advance

edit: don't take it badly, your tech looks promising on paper.



One startup cannot solve all the problems right?

Also I like solutions that don't rely on people changing their habits, because they are most likely to work.

The alternative to tobacco is no cigars or cigarettes, the alternative to cement is not simply no buildings, no railways, no roads, no infrastructure.


we are building out of clay, stone and wood for a long time. we are only using concrete because it's cheap and convenient.

still not convinced of hydrogen for steel rebar production also.




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