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Concrete strength is measured by "bag mix", meaning that the bag mix answers the question, how many bags of cement per yard of concrete.

If you're looking for a "6 bag" mix, that means 6 bags of cement per yard of concrete. A "bag" of cement is 1 cubic foot. A yard of concrete is 27 cubic feet (3 X 3 X 3 = 27).

If you want to make a "6 bag mix" of concrete, using 1 bag of cement, you would make 1/6 yard concrete with 1 bag of cement. If you would be content with a "5 bag mix", you could make 1/5 yard.

Concrete is often defined as ratios of cement,sand,aggregate such as: 1:2:3 which is a very common mix.

For a 1:2:3 mix you would need 1/6th of the volume to be cement.

The dry ingredients are generally 1.6 x finished concrete volume.

Therefore dry volumen for 1 cubic yard = 1.6 cu yards = 43.2 cu ft.

1/6 x 43.2 = 7.2cu ft.

Therefore, if one bag is 1 cu ft we need 7.2 bags for a healthy 1:2:3 mix.

A '6 bag mix' or a '5 bag mix' are a bit short on cement.

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โˆ™ 2010-09-19 05:24:06
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Q: How much concrete can be made using one bag of cement?
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