1 : 3 : 3 mix ratio. to produce a 3000 psi cubic yard of concrete (27 cubic feet) the concrete mixture ratio is: 517 pounds of cement or (234kg) 1560 pounds of sand or (707kg) 1600 pounds of stone or (725kg) 32 34 gallons of water or (132l) this mixing ratio will give you a concrete mix that is strong, durable, and good for most concrete.

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