Cement

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Concrete is normally used as a structural component in building projects and is a mix of materials, while cement is just one ingredient in concrete, acting as a binder.

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Most concrete bags are 4 inches thick, so if you lay the bags end-to-end, you can measure out the number of concrete mix bags you will need for a designated square footage.

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Concrete mix does not expand when water is added, so a good rule of thumb is that the area the bag of concrete mix takes up will be the same size it will be when water is added and it hardens.

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This rule of thumb is best used when laying a 4-inch thick concrete pad.

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Armstrong Lumber Co. is a locally owned and operated building supply store in south Texas, established in 1946. We are an old-fashioned full service lumber yard providing quality construction materials to the professional builder, business industry, and individual.

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