There is a very similar product in the art world, Creative Paperclay.
The original recipe is from Japan. The basic ingredients are pulp
fibers, volcanic ash, calcium carbonate, starch and some preservatives.
No concrete in it though so it is not suitable for outdoors or large
structures. But it is good for making models of your future projects.
So of course is papermache.
As to clay which is formed from phyllosilicates, both vermiculite and
talc are part of that mineral group and can form clay materials. So if
you say there is no clay but when you have vermiculite or mineral
powder in your papercrete then you do have clay minerals in the mix
even though you have not added what is commonly thougt of as clay.
Now of course to create concrete you heat limestone which contains
calcium and mix it with clay and some gypsum. Then you add in some
aggregates which might be ash, sand or fibers or all of the above.
So formulas such as paperclay and Darjit along with others seem to be
adding more to the mix of what is already there in a bag of cement. All
you are really doing is changing the basic concrete recipe thereby
getting a different plasticity characteristic.
I suppose we don't typically think of pulp fibers as being an aggregate
but that is what it is in the recipe, another form of aggregate.
Karin Corbin
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