Hi Pat,
You need to do what's called a slump test when the mix is delivered. To be 100%
sure, you need to pour a cylinder of the mix you used and then have it tested
(crushed) after 30 days to determine the psi of the mix actually in the ground.
J.P.
Quoting Pat Masterson <bat@grumman.com>:
> If I order 3500 LB concrete from the supplier, how do I know that when
> the truckload arrives, it doesn't contain a weaker mix? What are the
> tests that can be performed before the stuff is poured into the hole?
> Should I hire a professional inspecter to do the tests? -pat
>
> *-----------------------------------------------------------------------------*
> * Pat Masterson V01-01, Northrop Grumman, * Ham:KE2LJ
> * 1 Grumman Road West * President Grumman
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> * email: bat@grumman.com Fone: 516-346-7125 * www.qsl.net/wa2lqo
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