FIELD: manufacture of building materials; manufacture of composite binders containing ashes from thermoelectric plants. SUBSTANCE: proposed binder includes high-calcium fly ash, Portland cement, clay powder, powder of partially burnt clay and additionally marble powder at the following ratio of components, mass.%: high-calcium fly ash, 46.7-52.2; portland cement, 21.3-23.8; powder of partially burnt clay, 17-19; marble powder, 5-15. EFFECT: improved decorative properties of binder at retained strength; extended capabilities. 2 tbl
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