How big of a building could you build with this? Could you use it as a waterproof coating for rammed earth, papercrete or strawbale?
--- In papercreters@yahoogroups.com, "Wayne" <huon@...> wrote:
>
> After many weeks of painstaking research I have came across the recipe for
> Petrified Hessian as use here in Australia since the war and still used
> today, so I will print it here and appreciate any feedback, especially
> from anyone that tries it. I live in a very wet environment and will post
> feedback as to how it goes here.
>
> Wayne
>
> Petrified Hessian
>
> 5 liters water
> 5.5kg cement
> 900g lime
> 450g salt
> 225g alum
>
> Apply the mix immediately to the hessian with a stiff brush, first outside
> then inside. After the initial wetness goes but before the mix sets apply
> a second coat to the outside. When this final coat sets the material will
> be hard and strong. The mix should cover about 8m square. Keep the
> surface damp for 3 days by spraying it with water.
>
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