What is 5 bag mix, 6 bag mix, 3000 PSI, 3500 PSI,
2008-12-6 · A good general rule to use is the rule of 6's: A minimum cement content of 6 bags per cubic yard of concrete, A maximum water content of 6 gallons per bag of cement, A curing period (keeping concrete moist) a minimum of 6 days, and; An air content of 6 percent (if concrete will be subject to freezing and thawing). ===== =====
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