Abstract

Anew constant-volume high-alumina bonite filler has been created on the basis of calcined slag formed in the production of metallic chromium. Calcining the slag at different temperatures increases its content of calcium hexaaluminate CaO6(Al,Cr)2O3 from 55 – 60 to 70% (calcination at 1450°C) and 90% (calcination at 1650°C). New compositions have been found for low-cement concretes based on the chromium-bearing bonite filler.

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