3 ms·
Is your math accounting for the volume the added water occupies? The paper describes using excess water for deliberately creating voids the electrolyte can acc
by pengaru 3y ago
Is your math accounting for the volume the added water occupies? The paper describes using excess water for deliberately creating voids the electrolyte can access.
AIUI when mixing cement any excess water in the initial mix weakens the cured product by leaving voids behind. You end up with a less dense cured result. Usually when you mix cement it's a balancing act of using as little water as possible while maintaining workability and still having sufficient water to kick off the process. Then once it sets up you go crazy with the water keeping it hydrated while it cures.
This stuff is deliberately being mixed very wet...
- slow_typist 3y agoAdmitted, it could be less cement. But then the material could not be used for structural parts of a building.
- pengaru 3y agoIt could still be well within the required compressive strength for things like foundations... But it's unclear to me how you'd get enough electrical capacity in such mixed applications since concrete is mostly aggregate (rock, gravel, sand), not cement, by volume. I think those areas of the MIT press release are just fantasy.