FIELD: foundry practice. SUBSTANCE: filler is mixed with curing agent in the amount of 8-15% of liquid glass, the liquid glass is introduced with curing agent consisting of ethylene glycol acetates at a ratio varying from 15.65: 1 to 0.53:1, and acetic acid at the following ratio of ingredients, wt. -% : ethylene glycol monoacetate, 6.0-65.0; ethylene glycol diacetate, 34.5-93.9: acetic acid, 0.1-0.5. The curing agent contains additionally 0.1-4.0% ethylene glycol propionates in order to raise initial strength of mixture in the first hours of curing. EFFECT: regulating service life and curing rate of mixture and improving its strength at all curing stages. 2 cl, 8 tbl
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