SU425870A1 - Concrete mix - Google Patents

Description

The invention relates to the building materials industry and can be used in the manufacture of dense concrete based on liquid glass.

Concrete mixes are known, including silicate in a glass-based glass and mineral aggregates. Hardening of concrete made from such mixtures occurs, as a rule, in air-dry conditions.

The purpose of the invention is to increase the strength of concrete and impart hydraulic properties to it.

The goal is achieved by the fact that, as a binder, the concrete mixture contains low-modulus liquid glass (module 1.5-2.0) with a specific gravity of 1.2-1.4 g / cm and ground granulated phosphoric slag with a specific surface of 3000-4000, and as aggregates, unmilled granulated phosphorus slag with a grain size of up to 3 mm and molten crushed stone from phosphorus slag with a fraction of 5-40 mm with the following ratio of components to weight. %:

Low-modulus liquid glass (module 1.5-2.0, specific gravity

specific surface 3000-4qOO cm% 20-25

Unmilled granulated

phosphoric slag

size up to 3 mm25-30

Cast rubble from

phosphorus slag fraction 5-40 mm40-45

Example. The starting materials are sodium liquid glass with a silica module of 1.8 and a specific weight of 1.3 g / cm, granulated phosphorus slag from the Chimkent phosphorus salt plant with a particle size of 3 mm, the same slag for heavy concrete. The chemical composition of granulated slag of the Chimkent plant of phosphate salts, wt. %: SiO2 45.25; AlgOs 3.66; RegOz 0.51; CaO 43.68; MgO 2.4; MpO traces; OO 0.11; P2O5 2.53; RaO 1.07; loss on ignition 0.84.

Of these components (wt.%) Constitute the concrete mix;

Low modulus liquid

glass with a specific gravity of 1.3 g / cm,

module 1,810

Granulated slag

size up to 3 mm25

Cast crushed stone from phosphoric slag fractions of 5-40 mm45

The components of the concrete are mixed in the following sequence: unmilled granulated slag, crushed stone, ground granulated slag. The dry components are stirred for 3 minutes, after which liquid glass is poured in and the mixture is stirred again for 2 minutes. The concrete mix is compacted in forms by vibrating on a standard vibrating plate for 30 seconds. The products are steamed at 85-90 ° С in mode 1 -: - 6- - 1 hour.

The strength of the samples made from the above composition of samples of the UHLH cm is 900 KG / CM2, the volume weight of concrete is 2400 kg / cm 3.

Since concrete hardens under hydrothermal conditions, products from it can be made by conventional concrete technology using serial equipment.

Subject invention

Concrete mixture, including silicate and cement and mineral aggregates, is characterized in that, in order to increase the strength of concrete and give it hydraulic properties, it contains low-modulus water glass (concrete 5-2-2) with specific weighing 1.2-1.4 g / cm and ground granulated phosphoric nlak with a specific surface of 3000-4000, and as aggregates, non-hammer granulated phosphorus slag with a particle size of up to 3 mm n molten crushed stone from phosphoric slag with a fraction of 5-40 mm at the following ratio of components in weight. %: Izkomodulny liquid glass (module 1.5-2.0, specific gravity 1.2-1.4 g / cm 3)

10-15 Ground granulated phosphoric slag with a specific surface of 3000-4000

20-25 Non-ground granulated phosphorus slag with a particle size of up to 3 mm Cast crushed stone from

phosphorus slag fraction

5-40 mm40-45