Block, no, haven't tried that. When I did my dome with sprayed and hand packed layers, I made the inner layers from just paper, with no portland cement. The outer layers have portland cement. None of my pc has dirt in it. If you add the outer layers while the inner layers are still wet, then there is no problem. If you wait too long and let the layers completely dry then there is a difference in shrinkage and a tendency for the layers to separate.
Rebar in papercrete ends up being surrounded by a void and does not add much strength, other than holding pieces together if you should hit it with a truck or something, or if you live in an earthquake zone. IMHO in most cases rebar is a waste of money in this application.
4" panels will give you around R9-12 which is not a lot by modern standards. I'd recommend at least 6" and preferably 12" thick.
Spaceman
sheelakasha wrote:
__._,_.___Hi everyone. first I also wana thank the moderators- keep doing what ever it is you do so well, so WE ALL can have a good time connecting to each other. second, I wanted to ask; has anyone tried to make a PC block consistnig of 2 different mixtures? if so can you describe it & for what purposes? The reason I'm asking is because I'm thinking of producing insulating panels that can be attached to the outer surfaces of existing houses, meaning, I want slim panels (2-6 inch thick) with a lot of R-VALUE (inner layer- High on fibers, less on mass- OPC, dirt etc.)on the one hand but it durable to climate (outer layer- Low on fibers, High on mass- OPC, dirt, Lime etc.) on the other Also, I wish to minimize the use of wire mesh, rebars or any kind of extra reinforcement which is not a part of the PC mix. so anyone? experience? thoughts? am I shooting to high here? Plus, How big do you think the panels should be? I think they should be at least 10 cm (4 inch) thick, and thinking of 60x120 cm boards. still thinking about connections to the wall as well. would love to get ideas udi ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/papercreters/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/papercreters/join (Yahoo! ID required) <*> To change settings via email: mailto:papercreters-digest@yahoogroups.com mailto:papercreters-fullfeatured@yahoogroups.com <*> To unsubscribe from this group, send an email to: papercreters-unsubscribe@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
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