This seems like something which should have been found a while back. Using local soils to hold formwork beyond tokenistic levels is a nice idea. If it can retai

This seems like something which should have been found a while back. Using local soils to hold formwork beyond tokenistic levels is a nice idea. If it can retain shape and be stable for the curing time, its perfect and presumably reduces site waste burdens, although I could imagine one time plastic (barrier, surface smoothing) waste rises a bit. Given pisé and Adobe and mud brick, the stability under compaction and loadbearing limits would have been known, so it seems odd it hasnt been explored for formwork or moulding before. It would very much depend on the quality of soil to hand.