ALUMOSILICATE CONCRETE MIX Russian patent published in 2001 - IPC

FIELD: manufacture of refractories for binding heat assemblies in metallurgy, heat power industry, petrochemistry and other industries. SUBSTANCE: alumosilicate concrete mix comprises, wt.%: high-alumina cement, 13-25; and chamotte, the balance. Mix further comprises more than 100% of mixture of superplasticizer based on sodium salts of product of condensation of naphthalene sulfonic acid and formaldehyde. EFFECT: increased strength of concrete when it becomes hardens under natural conditions and when is shrinkage becomes lower at high temperatures.