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One of the most important quality tests routinely performed is calculating yield. Accuracy is important for the proper payment that is based on volume (cubic yards) when the ingredients are measured by weight. Issues of yield are mentioned most often when adjustments are due to accommodating volumetric changes caused by air content.

Richard Szecsy, vice president of new product development and risk management at Lattimore Materials Co., McKinney, Texas, suggests industry reexamine one of the industry’s most common batching problems—quantifying the mass of a sack or bag of cement.