In an earlier publication the author presented a set of tables for proportioning continuously and gap-graded concrete of 38-mm (1.5-in.) maximum size, on the basis of Weymouth's theory of particle interference. In this paper, Weymouth's theory has been restated in algebraic form, thus making applications to mix proportioning less difficult. Moreover, tables for optimum grading of 76-mm (3-in.) maximum size coarse aggregate as well as tables for optimum grading of fine aggregate are included.
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