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by 3dee 1881 days ago
It seems to be a mixture of clay, salt, rice fibers and lime.

So I guess the lime prevents erosion.
1 comments
RosanaAnaDana 1881 days ago
Mineralization. Effectively turns the aggregate into a kind of concrete. I would put a significant bet down that the energy cost of the lime is not accounted for in their 6kwh calculation.
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