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Estimating the total amount of materials you will need can sometimes be the trickiest part of a project. Use our handy coverage calculators to determine the amount of aggregate, ready mix concrete, block or paving stones your project requires.Soil-cement is sometimes called cement-stabilized base, or cement-treated aggregate base. Regardless of the name, the principles governing its composition and construction are the same. What Type of Soil is Used? The soil material in soil-cement can be almost any combination of sand, silt, clay, gravel, or crushed .