RU2012113330A - HIGH EFFICIENCY REACTIVE-POWDERED HIGH-STRENGTH AND HEAVY DUTY CONCRETE AND FIBRO-CONCRETE (OPTIONS) - Google Patents

Abstract

1. Reaction-powder heavy-duty concrete containing Portland cement PC 500 D0 (gray or white), a superplasticizer based on polycarboxylate ether, silica fume with an amorphous - vitreous silica content of at least 85-95%, characterized in that it further includes ground silica sand (microquartz ) or ground stone flour from dense rocks with a specific surface of (3-5) · 10cm / g, fine-grained quartz sand with a narrow particle size fraction of 0.1-0.5 ÷ 0.16-0.63 mm, has a specific cement consumption per unit of strength eton is not more than 4.5 kg / MPa, has a high density with a new formulation and with a new structural and topological structure, with the following content of components,% of the mass of dry components in the concrete mix: - Portland cement (gray or white) grade not lower than ПС 500 D0 - 30.9-34%; - a superplasticizer based on polycarboxylate ether - 0.2-0.5%; - silica fume - 3.2-6.8%; - ground quartz sand (microquartz) or stone flour - 12, 3-17.2%; - fine-grained quartz sand - 53.4-41.5%; - water - W / T = 0.95-0.12.2. Reactive powder heavy-duty fiber-reinforced concrete containing Portland cement ПЦ 500 Д0 (gray or white), a superplasticizer based on polycarboxylate ether, silica fume with amorphous-vitreous silica content of at least 85-95%, characterized in that it further includes ground silica sand (microquartz) or ground stone flour from dense rocks with a specific surface of (3-5) · 10cm / g, fine-grained quartz sand with a narrow particle size distribution of a fraction of 0.1-0.5 ÷ 0.16-0.63 mm, and fiber content of steel metal cord (d and a diameter of 0.1-0.22 mm, length 6-15 mm), basalt and carbon fibers, has a specific

Claims (2)

1. Reaction-powder heavy-duty concrete containing Portland cement PC 500 D0 (gray or white), a superplasticizer based on polycarboxylate ether, silica fume with an amorphous - vitreous silica content of at least 85-95%, characterized in that it further includes ground silica sand (microquartz ) or ground stone flour from dense rocks with a specific surface of (3-5) · 10 ³ cm ² / g, fine-grained quartz sand with a narrow particle size fraction of 0.1-0.5 ÷ 0.16-0.63 mm specific cement consumption per unit strength type of concrete no more than 4.5 kg / MPa, has a high density with a new formulation and with a new structural and topological structure, with the following content of components,% of the mass of dry components in the concrete mix: - Portland cement (gray or white) grades no lower than PC 500 D0 - 30.9-34%; - a superplasticizer based on polycarboxylate ether - 0.2-0.5%; - silica fume - 3.2-6.8%; - ground quartz sand (microquartz) or stone flour - 12.3-17.2%; - fine-grained quartz sand - 53.4-41.5%; - water - W / T = 0.95-0.12. 2. Reaction-powder heavy-duty fiber-reinforced concrete containing Portland cement ПЦ 500 Д0 (gray or white), a superplasticizer based on polycarboxylate ether, silica fume with an amorphous-vitreous silica content of at least 85-95%, characterized in that it further includes ground silica sand (microquartz ) or ground stone flour from dense rocks with a specific surface of (3-5) · 10 ³ cm ² / g, fine-grained quartz sand with a narrow particle size fraction of 0.1-0.5 ÷ 0.16-0.63 mm, and also steel fiber content RD (diameter 0.1-0.22 mm, length 6-15 mm), basalt and carbon fibers, has a specific consumption of cement per unit of concrete strength of not more than 4.5 kg / MPa, and a specific consumption of fiber per unit of increase in strength per tensile bending, does not exceed 9.0 kg / MPa, has a high density with a new compounding and with a new structural and topological structure, and concrete has a ductile (plastic) fracture in the following components,% of the mass of dry components in concrete mix: - Portland cement (gray or white) grades no lower than PC 500 D0 - 30.9-34%; - a superplasticizer based on polycarboxylate ether - 0.2-0.5%; - silica fume - 3.2-6.8%; - ground quartz sand (microquartz) or stone flour - 12.3-17.2%; - fine-grained quartz sand - 53.4-41.5%; - steel fiber steel cord 1.5-5.0% by volume of concrete; - basalt fiber and carbon fibers 0.2-3.0% by volume of concrete; - water - W / T = 0.95-0.12.