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The influence of aggregate gradings on the properties of concrete has been extensively discussed in the technical literature during the past 125 years and many methods for arriving at “optimum” or “ideal” gradings have been presented. However, none of these has been accepted as being universally applicable, because of economic consideration, differences in particle shape and texture of the aggregates, and the effects of entrained air and amount of cementitious material contained in the concrete [1–25].
Consulting engineer, Laguna Hills, Calif.