HEAT-INSULATING FACING STONE Russian patent published in 2013 - IPC B32B13/00 C04B28/04 C04B38/08 C04B111/82 

FIELD: chemistry.

SUBSTANCE: invention relates to production of structural materials and can be used in production of small-piece coloured facing structural and heat-insulating materials, particularly bricks or blocks. The heat-insulating facing stone has a structural and heat-insulating base layer made from material containing, wt %: portland cement M400DO-M500DO 21-35, claydite gravel 17-64, building sand 0-61, granular polystyrene 1-15 and a front layer made from material containing, wt %: building sand with Mkr. 1.5-3.2 70 - 86, grey portland cement M400DO-M500DO 14-30, pigment for concrete 0-5 of said portland cement, or sand with Mkr. 1.5-3.2 70-86, white portland cement M400DO-M500DO 14-30, pigment for concrete 0-5 of said portland cement, or quartz sand from Zubtsovsky deposit 69-84, white portland cement M400DO-M500DO 16-31, pigment for concrete 0-3 of said portland cement, or quartz crumbs 70-86, white portland cement M400DO-M500DO 14-30, pigment for concrete 0-3 of said portland cement.

EFFECT: wider colour gamma, improved thermal properties, low density.

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