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Hydration is the chemical process by which concrete mixtures harden. Absent a retarding admixture, the hydration reaction occurs in any proper concrete mix. Wood, rotten or otherwise, is not typically a retarding admixture. Embedding rotten wood in a foundation is not consistent with good practice, industry standards, and building codes. Furthermore, ...


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Highly recommend you dig out the rotted post, especially for a patio. Do it right the first time, going back later will be a nightmare. If you want to take the lazy way out, cut the post and bury it. Add another one directly next to it.


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While it wouldn't necessarily hurt I see absolutely no need to do this. I wouldn't bother. Some websites suggest it will change the appearance of the slabs? Sealant will change the appearance, this is neither inherently good or bad. It will give it a more...wet look most likely, similar to waxing a floor or sealing wood. Some site also say you need to ...


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Smells high, but hard to be sure. Older and presumably less expensive implementations seen under sidewalks use more of a concrete grid with small pieces of frosted glass - better relative strength and modesty preserved, but no stargazing from the basement. And, if the glass was broken (it's usually quite robust) there's no chance of people falling through ...



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