So here is our test for a papercrete wall panel.
We built a form 20″ x 20″ (dimensions were based on largest size of available materials for a form… i.e. being cheap and using stuff in the scrap pile)
Form material list:
(1) 20 ” x 20″ OSB board
(4) 2″ x 2″ for sides
cling wrap so papercrete doesn’t stick to OSB
Papercrete mix ratio 2:1 (Paper to Portland cement) The mix consistency was like wet oatmeal and we worked it into the mold by hand and troweled/hand-patted it to smooth it out.
Results are pretty encouraging. It’s been drying for three days and is about 1.5″ thick. The next test is a 4′ x 8′ panel. Stay tuned.