Papercrete Mix Ratios & Curing time?

Anderson, SC(Zone 7b)

Hi,
I just did my first 2 experiments yesterday, one with Papercrete, the other with Hypertufa, and I have a couple of questions on the papercrete. (they're still in the molds)

1. Have any of you determined the proper ratio mix of paper slurry to PC for larger papercrete projects? I'd like to make some large containers with it, so any advice & tips would be appreciated.

2. What's the curing time for papercrete before planting in it?

3. Do you seal these inside or out before you use them? If so, with what? Will polyurethane work?

Thanks!!

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