CRUDE MIXTURE FOR MAKING ROOFING TILES Russian patent published in 2014 - IPC C04B33/16 

FIELD: chemistry.

SUBSTANCE: invention relates to compositions of crude mixtures which can be used in making roofing tiles. The crude mixture for making roofing tiles contains loess, bentonite, scrap glass, kaolin, quartz sand and zinc oxide, with the following ratio of components, wt %: loess - 78.5-79.5; bentonite - 5.0-7.0; kaolin - 1.0-1.5; scrap glass which is ground to pass through sieve N 014 - 3.0-4.0; quartz sand which is ground to pass through sieve N 014 - 8.0-10.0; zinc oxide - 0.5-1.0.

EFFECT: high frost resistance of articles.

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