Concrete mix ratios | Building & Hardware
Strong concrete mix ratio. 1 part cement; 1.5 parts sharp sand; 2.5 parts aggregates; Using ballast: 1 part cement; 3.5 parts ballast; The 1:1.5:2.5 concrete mix ratio is a stronger mix that is ideal for steps, paving and driveways that will be exposed to the weather.
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