Activation of cement clinker with high content of belite

О.А. Miryuk

doi:10.31643/2020/6445.15

Authors

О.А. Miryuk Rudny Industrial Institute

DOI:

https://doi.org/10.31643/2020/6445.15

Keywords:

technogenic materials, alite, belite clinker, activation.

Abstract

The results of studies of cement clinkers with a high content of belite are presented. To obtain clinkers polymineral wastes of enrichment of skarn-magnetite ores were used. To intensify the hardening of cements, a method for activating the silicate phases of clinker (alite and belite) is proposed. Active phases are formed during the synthesis of clinker using a dual-blend technology, which provides an increase in the reactivity of the components of the raw material mixture. Thermodynamic calculations have been carried out, confirming the likelihood of belite formation reactions based on minerals of the raw material mixture. The composition of raw materials blends is justified. To assess the low-melting charge, a basicity coefficient (BC) was introduced and the preferred values of BC = 0.25 – 1.50 were shown. An increase in the activity of alite and stabilization of the active modification of belite provide hardening of the cement stone. The work is aimed at creating resource-saving technologies for Portland cement.

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Author Biography

О.А. Miryuk, Rudny Industrial Institute

Doctor of Technical Sciences, Professor. Head of the department of building construction materials, Rudny Industrial Institute, Rudny, Kazakhstan.

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