FIELD: chemistry.
SUBSTANCE: group of inventions relates to structured granulated composition of binding agent, suitable for preparation of cement mass, to concrete mass, containing such granulated composition, as well as to methods of their preparation and to equipment for preparation of said granulated composition. Granulated composition consists of granules, each of which contains metakaolin agglomerate as pozzolanic binder, where pozzolanically active part includes metakaolin, 10-80% of which are represented by agglomerate, and filler particles, to surface of which particles of hydraulic binder are bound. In the method of said granulated composition preparation first, plasticiser is bound to surface of calcium carbonate particles, after which formed particles are bound to surface of filler particles, and finally, particles of hydraulic binder are bound to filler particles via particles, which contain calcium carbonate and plasticiser. Concrete mass contains said granulated composition, finely disperse and coarse-grained fillers. In the method of said concrete mass preparation finely disperse and coarse-grained fillers are added into said granulated composition. Equipment for preparation of said granulated composition.
EFFECT: increased strength of concrete, obtained on the basis of granulated composition of binding agent.
20 cl, 3 dwg, 1 ex
