INITIAL MIXTURE FOR HEAVY CONCRETE PREPARATION, INITIAL MIXTURE FOR POROUS CONCRETE PREPARATION, INITIAL MIXTURE FOR FOAM CONCRETE PREPARATION, ADDITION TO CONCRETE MIXTURE Russian patent published in 1995 - IPC

FIELD: construction. SUBSTANCE: initial mixture for preparation of heavy concrete has binder, small and big size filler, addition and water also as plasticizing and water-reducing addition uses waste waters of yeast production based on sulfates and chlorides of alkaline metals with following ratio of components, mass binder 18.3 21.4; small size filler 26.5 27.7; big size filler 44.4 48.8; the addition 0.2 0.5; water the rest. Besides, initial mixture for porous concrete preparation has binder, small and big size filler, pores forming addition and water. The mixture as pores forming addition uses concentrated waste waters of yeast production, based on sulfates and chlorides of alkaline metals in following ratio of components, mass binder 11.3 11.6; small size filler 24.5 27.9; big size filler 51.2 54.0; the addition 0.1 0.5; water the rest. Besides, initial mixture for foam concrete preparation has mineral binder, small size filler, foam forming addition and water as foam forming addition uses concentrated waste waters of yeast production, based on sulfates and chlorides of alkaline metals and additionally has ground quick lime and plasticizing addition in following ratio of components, mass mineral binder 45.4 47.9; small size filler 35.0 36.5; the addition 3.5 8.0; ground quick lime 0.3 0.4; plasticizing addition 0.3 0.4; water the rest. Besides, addition to concrete mixture based on waste waters of yeast production has following components, mass formed in process of yeast production alkaline metals sulfates 7.5 12.5; alkaline metals chlorides 1.5 3.5; ammonium nitrogen 0.02 0.04; organic nitrogen 1.5 4.0; sugar 3.0 5.0; flying fatty acids 3.5 - 5.5, similar materials present in suspended state and formed in process of production 1.8 -3.8; solid sediment of similar materials, formed in process of production 70.0 73.0; other ingredients the rest. Concrete mixtures were prepared with different dosages of the addition to create plasticizing and water-reducing effect, air attracting effect and foam-forming effect. In parallel concrete mixtures for production of heavy concrete, light porous concrete and foam concrete were prepared by stirring components. Density of heavy concrete was 2200 2400 kg/m³, its strength 50.0 69 MPa; density of light porous concrete was 1430 1470 kg/m³, its strength 5.6 7.9 MPa, porosity effect 10.7 11.2 density of foam concrete was 500 750 kg/m³, its strength 0.5 1.2 MPa, porosity effect 22 25 EFFECT: heavy, porous and foam concretes are used in construction. 5 cl, 2 tbl