Abstract
Filler of three fraction grain size composition has been studied in order to prepare concrete with good physicotechnical properties. This composition is most technologically efficient in manufacturing refractory concrete objects. Fractionation of corundum grade K object scrap is accomplished through a standard set of screens with cell sizes of 5.0, 1.25, 0.63, and 0.14 mm. Residues on each of the screens (partial residues) specifying filler grain size composition were labelled with letters. Residue on a screen with cell size 1.25 mm C, 0.63 mm B, and 0.14 mm A. Provision of minimum intergranular space and correspondingly maximum average filler mix density was achieved by mixing grains of different size in prescribed ratios. Results of experiments are given in Table 1 and shown
Published Version
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