Abstract
A computer-based method to fit a desired grading by combining different aggregate fractions is presented. It provides “the best” approximation, since the solution minimizes the differences (squared) between the desired and the actual grading. The algorithm used is based on the modified Gram-Schmidt method with iterative refinement. The utility of the method increases with the number of fractions to be combined or when a gap-graded combination is desired. The method is both rapid and flexible, and permits different alternatives to be considered and hence to make technically and economically sound decisions. Examples of its application are presented.
Published Version
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