this post was submitted on 16 Nov 2025
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[โ€“] invalidusernamelol@hexbear.net 3 points 1 month ago (1 children)

Where's the load testing? I feel like adding a bunch of junk to concrete has to do something to the integrity.

[โ€“] infuziSporg@hexbear.net 4 points 1 month ago

I would suspect that salts (electrolytes) moving through the concrete would be just as much of a concern.

Plus, with a passive solar design, concrete (or stone, or anything with a high enough mass and specific heat capacity) will already store a lot of solar energy during the day and release it at night.