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Also fly ash is a pain in the ass to get rid off. I've heard about companies re-using it in concrete products and other construction materials. Even if the valu
by John_KZ 9y ago
Also fly ash is a pain in the ass to get rid off. I've heard about companies re-using it in concrete products and other construction materials. Even if the value produced is low, any profit is better than dealing with the cost of safely disposing it.
- Erlangolem 9y agoWouldn’t that make the resulting concrete unusually radioactive?
- John_KZ 9y agoNo, the idea that fly-ash is highly radioactive is a faux created by the nuclear lobby. Some coal is more radioactive than other, but in general they're very safe from this perspective. The real problems are is it's corrosiveness, it's heavy metal content (if any), and the particle size.
- Erlangolem 9y agoI live and learn, thanks. The particle size I assume is an issue for pulmonary reasons? So sequestered in concrete that wouldn’t be an issue, smart.
- Symbiote 9y agoMaking cheap bricks with waste ash has been common for decades. Most British houses have two layers of brick, the nice ones on the outside, and these ones on the inside, which will be covered. An air (or fibreglass) gap between them provides insulation. https://en.wikipedia.org/wiki/Concrete_masonry_unit https://en.wikipedia.org/wiki/Concrete_masonry_unit https://en.wikipedia.org/wiki/Cavity_wall https://en.wikipedia.org/wiki/Cavity_wall