Concrete without sand, or without gravel, is not very good.
Gravel must be clean, and the sand must be clean.
Lot's of good looking sand has enough clay in it to make the concrete weak. Put a half a shovel in a bucket of water and you'll see how clean it is.
The dryer you mix it the stronger it will be. I proved that to myself in a college class, mixing my own then breaking it with a calibrated load tester. Dry always wins. Mix it as dry as you can still get it to work into your forms.
For posts and pole barns I usually put dry mix in (no water added). Tamp it in and in 30 days it will be plenty hard from ground moisture. Saves hauling water out to a fence job.
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Today's Featured Article - Preventing Tractor Theft - by Staff. The discussion started with the following message: I have a JD A without key start or any locking device. Is there a best way to secure it so the chances of it being stolen are reduced? Following are some of the answers that were received: Take the rotor out of the distributor and hide after each use. The would-be thieves at least couldn't just get on and drive away.
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