Monday, April 12, 2010

Blocks and slip forming. Was RE: [papercreters] Re: Papercrete in cold climates [4 Attachments]

[Attachment(s) from JUDITH WILLIAMS included below]

HI Shana, I put up some pretty heavy vigas just before Christmas. The building didn't sit there too long. Spaceman probably remembers better than I do. We had the gathering the last weekend of Sept then kept putting the walls up until Thanksgiving. Then we did the vigas. The walls were very strong by then.

As I said, I am doing blocks and slip forms together and it's working out very well. I made some blocks to just fit between the forms. They were ready to use about 3 days after pouring. I think you should just go ahead and start making blocks and see what happens. It's better to use the blocks when they are just able to be handled. That way they sort of meld into the poured papercrete.

I made a sort of stem wall of gravel then set the forms on top. I poured a mix that included about 1/2 of a 5 gallon bucket of latex paint to waterproof. I set the blocks on top of that and pushed them down. The next day I came back and the blocks were firmly stuck to the mix. The whole thing seems to be setting up very fast. I feel sort of bad because I have to take time off to rehab the mixer. I don't want to stuff to get completely dry before the next course goes on. The trick to doing a monolithic pour is to have it all done at relatively the same time. That way it is really one solid piece.

I was cautioned a while back to not pour papercrete in the cold weather but I have done it anyway with no bad results. When I poured the blocks a couple of weeks ago it got down to about 28 at night. Maybe that is warm where you are but it's still below freezing.

Attachment(s) from JUDITH WILLIAMS

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