Invisible <voi### [at] devnull> wrote:
> FWIW, as I understand it, it's not the water as such. The setting of 
> concrete involves a chemical reaction rather than the mere removal of 
> the water.

  I don't know if disturbing the concrete while it's drying messes up
with those reactions, but if it does, you would probably eventually get
some kind of dust or gravel.

-- 
                                                          - Warp

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