Technogenic Waste Based on Iron Quartzites – Raw Materials for Mixed Cements

Abstract

The article presents the results of research on the use of technogenic waste from the enrichment of unoxidized ferruginous quartzites as a mineral filler for mixed cements. It has been established that the introduction of waste into cement in an amount of up to 30% leads to an increase in compressive strength by 23%. With a further increase in waste dosage, the strength decreases sharply. With an increase in waste content, a denser composite structure with pronounced overgrowing of pores is formed. During the joint grinding of cement particles and waste, their mechanochemical activation occurs, which leads to the formation of calcium ferrites.