Electricity costs for grinding of cement with expanding additives

Abstract

The most popular building material, including on transport facilities, is cement. Cement production is associated with the electricity costs. The biggest cost item is the consumption for the cement clinker grinding. It is known that disperse characteristics of cements, such as fineness of grinding, specific surface, coarseness of grading, largely determine their hydraulic properties, and for expanding cementsthe deformation ones. In the paper, the issues of electric power consumption were considered when grinding extender expanders: aluminous slag, sulfoaluminate, sulfoferrite and sulfoalumoferrite clinkers.

The use of finely ground slag in portland cement with mineral additives

“…Scientists have conducted studies to develop ways to improve slag cements, cement and other binding compositions containing slag [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. One of the ways to increase the activity of the slag is thermal activation, which consists in the combination of abrupt heating of the source material with a relatively short isothermal exposure resulting in rapid cooling of the slag [4][5][6].…”

“…For the production of special types of cement and concrete based on them, alumina slags are used. The authors [16][17][18][19] found that the use of mineralizers, the choice of cooling mode, optimization of the dispersion of slag contribute to the management of its properties and the production of cements with enhanced performance characteristics.…”

“…In works [7,11,17,[18][19][20][21][22][23][24], the positive effect of slag fineness on the properties of the studied cements was noted, which allows us to consider it as a reinforcing component of the cement matrix. In this regard, the goals and objectives of the study were formulated, which are: to obtain finely ground slag of different dispersity and to study its effect on the properties of Portland cement with mineral additives.…”