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by lisivka
3649 days ago
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When straw/wood is enclosed in concrete with some lime, it does not rot. I saw video[1] of remains of houses built by German prisoners in Siberia using "soft concrete" - concrete with wood chips (cement bonded particle board, AKA Arbolite, fiber reinforce concrete, Papercrete, etc.). They are looking good after about half of century without any maintenance of houses, even in broken walls without roof. From my own experience, I saw that wood rots quickly for about 1cm (1/2") when it contacts with concrete or cement stucco, but remains intact when enclosed in cement-lime mix. IMHO, lime is important to save wood/straw from rotting. [1] https://www.youtube.com/watch?v=iAiT6IRVgTE [2] https://en.wikipedia.org/wiki/Papercrete |
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