Optimization Model for Aggregate Blending |
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Authors: | Said M. Easa Emre K. Can |
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Affiliation: | 1Assoc. Prof., Dept. of Civ. Engrg., Lakehead Univ., Thunder Bay, Ontario, Canada P7B 5E1 2Asst. Prof., Dept. of Civ. Engrg., Lakehead Univ., Thunder Bay, Ontario, Canada P7B 5E1
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Abstract: | An optimization model of aggregate blending is presented that considers gradation, cost, and design requirements and is applicable to the blending of any number of aggregates. The model is formulated as a quadratic programming problem that minimizes the mean deviation from midpoint specification limits, subject to constraints on the preceding requirements. The model is applied to a numerical aggregate blending problem. Sensitivity analysis is performed to show how the model can also be used to minimize cost or to provide a trade‐off between mean deviation and cost. Extensions of the model to accommodate special practical cases are examined. |
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Keywords: | Aggregates Optimization models Computer programming |
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