Quote:
Originally Posted by harryc
Not sure - but it did keep the concrete from soaking into the gravel.
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I don't know either, but I do know that when I worked in concrete construction we nearly always poured directly on a gravel base and there wasn't much "soaking" into the gravel. The amount lost to soaking seems like it would be very small, so I would guess there'd be some other reason to use the plastic. Granted, that was 20 years ago, so who know what new developments there are in the world of concrete.