Way back (1976) I experimented with paper pulp and gypsum (plaster of Paris). It works great - except - the set time was about fifteen minutes, and very rapid. You have to really be moving to get it well mixed and in place or into molds in the amount of time you have. It's best to work with small batches or you'll end up with a mixer full of hard stuff.
If the plaster you have available has some type of retardant in it to increase the set time, it might work just fine for interior use.
I think you would have to seal it very well outside but it would be fine inside.
spaceman All opinions expressed or implied are subject to change without notice upon receipt of new information.
On 7/11/2010 11:54 PM, prrr.t21@btinternet.com wrote:
I mean gypsum plaster. I might be able to get a batch at below the usual price, and I'm wondering if it could be used for interior use papercrete where it stays dry. I NT
__._,_.___
