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Posted by RicodJour on June 17, 2007, 4:23 pm
> I am pouring a small sidewalk area with concrete. I have a large supply of
> limestone (1/2" small rocks and dust) available close at hand, but would
> have to buy and haul sand to use as the base for the concrete. Can the
> limestone be used successfully instead of the sand? Given that either will
> be tamped well before concrete poured. Thank you.
As long as the limestone has a range of sizes - from dust to pebbles -
and you compact it well, that'll be fine.
BTW, most people would omit the aggregate base layer when placing a
concrete sidewalk unless there was a problem with drainage or clay
soil. Compacting the dirt (non-organic, not topsoil) would work as
well otherwise.
R
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