[TowerTalk] Concrete Set Time

[Scott McClements]

One more thing to add is, if you want to be sure then have it crush
tested. I figured this would cost a fortune, but my local concrete
testing place gave me the cylinders and rod for free, and showed me
how to prepare the samples (4 of them). They then charged me 15$ per
cylinder for testing (done at 7 days and 28 days). Total cost was 60$.
 Well worth it.

-Scott, WU2X