METHOD OF PRODUCING GRANULAR AGGREGATE FOR CONCRETE Russian patent published in 2011 - IPC C04B28/18 C04B20/00 C04B28/04 C04B111/27 

FIELD: chemistry.

SUBSTANCE: invention relates to production of construction materials and can be used in making concrete structures which are subjected to steam treatment during hardening, for civil and industrial construction. The method of producing granular aggregate for concrete, consisting of a core and cladding, involves formation of the core in the presence of liquid glass from a mixture of jointly ground foamed pearlite and sodium hydroxide, rolling the cladding on the surface of the core from jointly ground unslaked lime with sodium silicofluoride, curing the granules in a microwave field with specific power consumption of 41-86 J/cm³.

EFFECT: shorter production time, high activity of the granular aggregate, as well as high water impermeability of concrete structures and low heat conductivity thereof.

1 ex, 2 tbl