FIELD: chemistry.
SUBSTANCE: invention relates to the industry of construction materials and production of expanded clay. The crude mixture for producing expanded clay contains the following, wt %: clay material 54.9-64.5; fibrous wastes from wool primary processing wastes 0.1-0.5; quartz sand ground to specific surface area 3500-5500 cm2/g 15.0-20.0; water 20.0-25.0.
EFFECT: higher strength of expanded clay.
1 tbl
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