DRY MIX FOR PRODUCING CEMENT SUSPENSION, METHOD AND INSTALLATION FOR PREPARING SUCH MIX Russian patent published in 1998 - IPC

FIELD: manufacture of building materials. SUBSTANCE: invention relates to composition of dry mix for producing cement suspension used for filling and/or pressing in pores in loose rocks or hollows and/or cracks in rocks or in concrete structures. Mix is composed of finely ground cement clinker or finely ground blast- furnace slag or their mixture without sulfate carriers; fillers; and additives such as bentonite, volcanic tuff, high-dispersity silicic acids, etc. Mix has narrowed discontinuous granulometric composition in which 95% of grains have diameter μm 24 mcm and 50% of grains have diameter μm 7 mcm. Invention also concerns method and installation for preparing dry mix. EFFECT: enhanced efficiency of process. 20 cl, 3 dwg, 1 tbl