Rethink Your Life!
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The Work of Art and The Art of Work
Kiko Denzer on Art
[Cob] key in the concrete beamdhowell at pickensprogressonline.com dhowell at pickensprogressonline.com
Fri Jun 22 06:25:38 PDT 2012
Anna: "you could set big stones in the concrete as it gets poured" I've thought this same process. It seems like the best way to me. Embed large stones on the top of the concrete while it is still wet and let them sink in a little. This provides that rough surface for keying but doesn't cause a "low spot" so water can be trapped. It is my thoughts that since cob is porous and does transmit water, then even if it does dry out fairly quickly, the rust will eventually set in on the steel and completely deteriorate it. That causes gaps which will probably cave in under pressure and cause severe cracking. Stones embedded in wet concrete will not move, and cob built up around those stones will not move, so you have a product that will not move. Why is there such an infatuation with steel rebar in the building industry? I've seen in the past where a concrete bridge was torn down and they found that the rebar had completely rusted away. So, really this is a good material to use, even in concrete. Think about it; concrete absorbs water, but because it isn't porous it the water doesn't evaporate. If there is steel in there there will be a reaction! Damon
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