watching tunnel drilling videos on you tube
It would be great to have a carbon neutral alternative to cement
Thinking more about it, it is absolutely necessary to develop a carbon neutral alternative to cement
Has anyone figured yet out how to high temperature reliable fast breeder reactor
@uint8_t Right... *wink wink, nudge, nudge*
@uint8_t Maybe bricks made from rocks?
@x44203 it's hard (and expensive) to cut rock into uniform shape, and you still need to bind them together
@uint8_t @x44203 yeah, even the castle builders knew that :) but using more stones should at least turn down the need for cement, compared to building everything from concrete. The only other solutions I can think of is using some kind is glue or other adhesive, but I don't know much about their CO2 balance. Or building more houses out of wood (frequently done anyways at least in North America) but then the building height is quite restricted.
Engineering has made some progress in that regard recently:
https://en.wikipedia.org/wiki/Mj%C3%B8st%C3%A5rnet > 85m
And currently in planning:
AFAIK _the_ innovation is
https://en.wikipedia.org/wiki/Cross-laminated_timber (which is 100% obvious in retrospect)
@daniel_bohrer @uint8_t @x44203 Stone also lasts much longer. I'm sitting in a house made from natural stone right now, which we don't even know when it was built originally, because they didn't have a registry back then. Cheap concrete falls apart after only a few decades, and the better quality stuff is usually not certified to last longer than a single century afaik.
The problem is that extracting and cutting stone is so expensive that it cannot solve the need for affordable housing etc..
@uint8_t its that binder - maybe some yet-to-be-realized polymer can be made that doesn't require the high heat and can be made from plant-based stock or at least isn't 100% petrol sourced.
There is some possibility.
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