@freeupfarmDM I'd be curious knowing also. I think the size of the plastic particles would preferable be smaller than aggregate so as to not introduce microcracking over time. In the Dominican Republic styrofoam is a significant problem, there is some repurposing: http://www.appropedia.org/Practivistas_Dominicana_Program_invitation#Application
I am also interested in what other potential or ongoing challenges Domes will have with climate change and our current materials utilization i.e concrete vs. earthen/clay, plastic/polymer blends etc.
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