Betongduk

[Dan_Johansson]

Saw a movie on Youtube where they set up a prefab tent sewn from "concrete canvas". After inflating a balloon in the tent, it was sprayed with water, causing it to harden and become a concrete tent..

There is a distributor in Sweden, but it doesn't seem to be a big product yet..
http://www.ccinfra.se/

Does anyone have any experience with the "material"?

 

[useless]

Could be a convenient way to create weed-free garden paths.

 

[Dan_Johansson]

I emailed the company, the mats cost between 3-600 SEK/sqm, so a bit expensive for garden paths...

I'm considering whether to lay such a mat over the blasted rock in my crawl space...